TOSHIBA MML-AP0184NH1-TR (01) PDF MANUAL


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PDF Content Summary: FILE NO. SVM-16048 Leading Innovation SERVICE MANUAL AIR-CONDITIONER MULTI TYPE < ConsoleType> MML-AP0074NH1-E, -TR MML-AP0094NH1-E, -TR MML-AP0124NH1-E, -TR MML-AP0154NH1-E, -TR MML-AP0184NH1-E, -TR • This Service Manual describes contents of the new Console indoor unit. For the outdoor unit, refer to the Manual with FILE NO. A10-005, A07-004, A05-015. • The service parts will be supplied by TCTC. April, 2016 CONTENTS Warning Indications on the Air Conditioner Unit ............................ 4 1. PRECAUTIONS FOR SAFETY .................................................... 5 2. SPECIFICATIONS......................................................................13 3. CONSTRUCTION VIEWS (EXTERNAL VIEWS)........................15 4. WIRING DIAGRAM .................................................................... 16 5. PART RATING............................................................................ 17 6. REFRIGERATING CYCLE DIAGRAM ....................................... 34 7. CONTROL OUTLINE ................................................................. 35 8. CONFIGURATION OF CONTROL CIRCUIT.............................. 42 9. APPLIED CONTROL .................................................................48 10. TROUBLESHOOTING ...............................................................60 11. OWNNER'S MANUAL................................................................ 85 12. INSTALLATION MANUAL..........................................................96 13. P.C. BOARD EXCHANGE PROCEDURES.............................. 111 14. DETACHMENTS ...................................................................... 116 15. EXPLODED VIEWS AND PARTS LIST.................................... 127 1 Original instructions Please read carefully through these instructions that contain important information which complies with the “Machinery“ Directive (Directive 2006/42/EC), and ensure that you understand them. Some of the details provided in these instructions differ from the service manual, and the instructions provided here take precedence. Generic Denomination: Air Conditioner Definition of Qualified Installer or Qualified Service Person The air conditioner must be installed, maintained, repaired and removed by a qualified installer or qualified service person. When any of these jobs is to be done, ask a qualified installer or qualified service person to do them for you. A qualified installer or qualified service person is an agent who has the qualifications and knowledge described in the table below. Agent Qualifications and knowledge which the agent must have • The qualified installer is a person who installs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations. • The qualified installer who is allowed to do the electrical work involved in installation, relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly

Qualified installer Qualified service person acquainted with the knowledge related to this work. • The qualified installer who is allowed to do the refrigerant handling and piping work involved in installation, relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work. • The qualified installer who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work. • The qualified service person is a person who installs, repairs, maintains, relocates and removes the air conditioners made by Toshiba Carrier Corporation. He or she has been trained to install, repair, maintain, relocate and remove the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such operations by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to these operations. • The qualified service person who is allowed to do the electrical work involved in installation, repair, relocation and removal has the qualifications pertaining to this electrical work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to electrical work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work. • The qualified service person who is allowed to do the refrigerant handling and piping work involved in installation, repair, relocation and removal has the qualifications pertaining to this refrigerant handling and piping work as stipulated by the local laws and regulations, and he or she is a person who has been trained in matters relating to refrigerant handling and piping work on the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work. • The qualified service person who is allowed to work at heights has been trained in matters relating to working at heights with the air conditioners made by Toshiba Carrier Corporation or, alternatively, he or she has been instructed in such matters by an individual or individuals who have been trained and is thus thoroughly acquainted with the knowledge related to this work.

2

Definition of Protective Gear When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. In addition to such normal protective gear, wear the protective gear described below when undertaking the special work detailed in the table below. Failure to wear the proper protective gear is dangerous because you will be more susceptible to injury, burns, electric shocks and other injuries. Work undertaken Protective gear worn All types of work Protective gloves ‘Safety’ working clothing Electrical-related workGloves to provide protection for electricians and from heat Insulating shoes Clothing to provide protection from electric shock Work done at heights (50 cm or more) Helmets for use in industry Transportation of heavy objects Shoes with additional protective toe cap Repair of outdoor unit Gloves to provide protection for electricians and from heat The important contents concerned to the safety are described on the product itself and on this Service Manual. Please read this Service Manual after understanding the described items thoroughly in the following contents (Indications/Illustrated marks), and keep them. [Explanation of indications] Indication Explanation DANGER Indicates contents assumed that an imminent danger causing a death or serious injury of the repair engineers and the third parties when an incorrect work has been executed. WARNING Indicates possibilities assumed that a danger causing a death or serious injury of the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. CAUTION Indicates contents assumed that an injury or property damage (*) may be caused on the repair engineers, the third parties, and the users due to troubles of the product after work when an incorrect work has been executed. * Property damage: Enlarged damage concerned to property, furniture, and domestic animal/pet [Explanation of illustrated marks] Mark Explanation Indicates prohibited items (Forbidden items to do) The sentences near an illustrated mark describe the concrete prohibited contents. Indicates mandatory items (Compulsory items to do) The sentences near an illustrated mark describe the concrete mandatory contents. Indicates cautions (Including danger/warning) The sentences or illustration near or in an illustrated mark describe the concrete cautious contents. 3

Warning Indications on the Air Conditioner Unit [Confirmation of warning label on the main unit] Confirm that labels are indicated on the specified positions If removing the label during parts replace, stick it as the original. Warning indication Description

WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. WARNING Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing. CAUTION Do not touch the aluminum fins of the unit. Doing so may result in injury. WARNING ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. WARNING Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing. CAUTION Do not touch the aluminium fins of the unit. Doing so may result in injury. 4

1. PRECAUTIONS FOR SAFETY The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. WARNING Before starting to repair the air conditioner, read carefully through the Service Manual, and repair the air conditioner by following its instructions. Only qualified service person (*1) is allowed to repair the air conditioner. Repair of the air conditioner by unqualified person may give rise to a fire, electric shocks, injury, water leaks and/or other problems. Only a qualified installer (*1) or qualified service person (*1) is allowed to carry out the electrical work of the air conditioner. Under no circumstances must this work be done by an unqualified individual since failure to carry out the work properly may result in electric shocks and/or electrical leaks. Do not use any refrigerant diff erent from the one specified for complement or replacement. Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which may result in a failure or explosion of the product or an injury to your body. Wear protective gloves and safety work clothing during installation, servicing and removal. When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear gloves to provide protection for electricians and from heat, insulating shoes and clothing to provide protection from electric shocks. Failure to wear this protective gear may result in electric shocks. Electrical wiring work shall be conducted according to law and regulation in the community and installation manual. Failure to do so may result in electrocution or short circuit. Only a qualified installer (*1) or qualified service person (*1) is allowed to undertake work at heights using a stand of 50 cm or more or to remove the intake grille of the indoor unit to

General undertake work. When working at heights, use a ladder which complies with the ISO 14122 standard, and follow the procedure in the ladder’s instructions. Also wear a helmet for use in industry as protective gear to undertake the work. When working at heights, put a sign in place so that no-one will approach the work location, before proceeding with the work. Parts and other objects may fall from above, possibly injuring a person below. When executing address setting, test run, or troubleshooting through the checking window on the electric parts box, put on insulated gloves to provide protection from electric shock. Otherwise you may receive an electric shock. Do not touch the aluminum fin of the unit. You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves and safety work clothing, and then proceed. Do not climb onto or place objects on top of the outdoor unit. You may fall or the objects may fall off of the outdoor unit and result in injury. When transporting the air conditioner, wear shoes with additional protective toe caps. Be sure that a heavy unit (10kg or heavier) such as a compressor is carried by two persons. This air conditioner has passed the pressure test as specified in IEC 60335-2-40 Annex EE. 5

DANGER Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breaker for both the indoor and outdoor units to the OFF position. Otherwise, electric shocks may result. Before opening the front panel of the indoor unit or service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts. Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the intake grille of the indoor unit or service panel of the outdoor unit and do the work required. Before starting to repair the outdoor unit fan or fan guard, be absolutely sure to set the circuit breaker to the OFF position, and place a “Work in progress” sign on the circuit breaker.

Turn off breaker. Electric shock hazard Prohibition Stay on protection When cleaning the filter or other parts of the indoor unit, set the circuit breaker to OFF without fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work. When you have noticed that some kind of trouble (such as when an error display has appeared, there is a smell of burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified service person. Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until qualified service person arrives. Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks or other failure. When you access inside of the service panel to repair electric parts, wait for about five minutes after turning off the breaker. Do not start repairing immediately.Otherwise you may get electric shock by touching terminals of high-voltage capacitors. Natural discharge of the capacitor takes about five minutes. Place a “Work in progress” sign near the circuit breaker while the installation, maintenance, repair or removal work is being carried out. There is a danger of electric shocks if the circuit breaker is set to ON by mistake. Before operating the air conditioner after having completed the work, check that the front panel of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position. You may receive an electric shock if the power is turned on without first conducting these checks. If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, wear insulated heat-resistant gloves, insulated boots and insulated work overalls, and take care to avoid touching any live parts. You may receive an electric shock if you fail to heed this warning. Only qualified service person (*1) is allowed to do this kind of work.

WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs.If the earth wire is not correctly connected, contact an qualified service person for rework. After completing the repair or relocation work, check that the ground wires are connected properly.

Check earth wires. Prohibition of modification. Use specified parts. Be sure to connect earth wire. (Grounding work) Incomplete grounding causes an electric shock. Do not connect ground wires to gas pipes, water pipes, and lightning rods or ground wires for telephone wires. Do not modify the products.Do not also disassemble or modify the parts. It may cause a fire, electric shock or injury. When any of the electrical parts are to be replaced, ensure that the replacement parts satisfy the specifications given in the Service Manual (or use the parts contained on the parts list in the Service Manual). Use of any parts which do not satisfy the required specifications may give rise to electric shocks, smoking and/ or a fire. 6 Do not bring a child close to the equipment. Insulating measures No fire Refrigerant Assembly/ Wiring Insulator check Ventilation If, in the course of carrying out repairs, it becomes absolutely necessary to check out the electrical parts with the electrical parts box cover of one or more of the indoor units and the service panel of the outdoor unit removed in order to find out exactly where the trouble lies, put a sign in place so that no-one will approach the work location before proceeding with the work. Third-party individuals may enter the work site and receive electric shocks if this warning is not heeded. Connect the cut-off lead wires with crimp contact, etc., put the closed end side upward and then apply a water cut method, otherwise a leak or production of fire is caused at the users’ side. When performing repairs using a gas burner, replace the refrigerant with nitrogen gas because the oil that coats the pipes may otherwise burn. When repairing the refrigerating cycle, take the following measures. 1) Be attentive to fire around the cycle. When using a gas stove, etc., be sure to put out fire before work; otherwise the oil mixed with refrigerant gas may catch fire. 2) Do not use a welder in the closed room. When using it without ventilation, carbon monoxide poisoning may be caused. 3) Do not bring inflammables close to the refrigerant cycle, otherwise fire of the welder may catch the inflammables. The refrigerant used by this air conditioner is the R410A. Check the used refrigerant name and use tools and materials of the parts which match with it. For the products which use R410A refrigerant, the refrigerant name is indicated at a position on the outdoor unit where is easy to see. To prevent miss-charging, the route of the service port is changed from one of the former R22. For an air conditioner which uses R410A, never use other refrigerant than R410A. For an air conditioner which uses other refrigerant (R22, etc.), never use R410A. If different types of refrigerant are mixed, abnormal high pressure generates in the refrigerating cycle and an injury due to breakage may be caused. When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction. Do not charge refrigerant additionally. If charging refrigerant additionally when refrigerant gas leaks, the refrigerant composition in the refrigerating cycle changes resulted in change of air conditioner characteristics or refrigerant over the specified standard amount is charged and an abnormal high pressure is applied to the inside of the refrigerating cycle resulted in cause of breakage or injury. Therefore if the refrigerant gas leaks, recover the refrigerant in the air conditioner, execute vacuuming, and then newly recharge the specified amount of liquid refrigerant. In this time, never charge the refrigerant over the specified amount. When recharging the refrigerant in the refrigerating cycle, do not mix the refrigerant or air other than R410A into the specified refrigerant. If air or others is mixed with the refrigerant, abnormal high pressure generates in the refrigerating cycle resulted in cause of injury due to breakage. After installation or servicing work, check the refrigerant gas does not leak. If the refrigerant gas leaks in the room,poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous. Never recover the refrigerant into the outdoor unit. When the equipment is moved or repaired, be sure to recover the refrigerant with recovering device. The refrigerant cannot be recovered in the outdoor unit; otherwise a serious accident such as breakage or injury is caused. After repair work, surely assemble the disassembled parts, and connect and lead the removed wires as before. Perform the work so that the cabinet or panel does not catch the inner wires. If incorrect assembly or incorrect wire connection was done, a disaster such as a leak or fire is caused at user’s side. After the work has finished, be sure to use an insulation tester set (500V Megger) to check the resistance is 1MΩ or more between the charge section and the non-charge metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side. When the refrigerant gas leaks during work, execute ventilation. If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refrigerant and the closed room full with gas is dangerous because a shortage of oxygen occurs. Be sure to execute ventilation. 7 Compulsion Check after repair Do not operate the unit with the valve closed. Check after reinstallation Cooling check When the refrigerant gas leaks, find up the leaked position and repair it surely. If the leaked position cannot be found up and the repair work is interrupted, pump-down and tighten the service valve, otherwise the refrigerant gas may leak into the room. The poisonous gas generates when gas touches to fire such as fan heater, stove or cocking stove though the refrigerant gas itself is innocuous. When installing equipment which includes a large amount of charged refrigerant such as a multi air conditioner in a sub-room, it is necessary that the density does not the limit even if the refrigerant leaks. If the refrigerant leaks and exceeds the limit density, an accident of shortage of oxygen is caused. Tighten the flare nut with a torque wrench in the specified manner. Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage. Nitrogen gas must be used for the airtight test. The charge hose must be connected in such a way that it is not slack. For the installation/moving/reinstallation work, follow to the Installation Manual. If an incorrect installation is done, a trouble of the refrigerating cycle, water leak, electric shock or fire is caused. Once the repair work has been completed, check for refrigerant leaks, and check the insulation resistance and water drainage. Then perform a trial run to check that the air conditioner is running properly. After repair work has finished, check there is no trouble. If check is not executed, a fire, electric shock or injury may be caused. For a check, turn off the power breaker. After repair work (installation of front panel and cabinet) has finished, execute a test run to check there is no generation of smoke or abnormal sound. If check is not executed, a fire or an electric shock is caused. Before test run, install the front panel and cabinet. Be sure to fix the screws back which have been removed for installation or other purposes. Check the following matters before a test run after repairing piping. • Connect the pipes surely and there is no leak of refrigerant. • The valve is opened. Running the compressor under condition that the valve closes causes an abnormal high pressure resulted in damage of the parts of the compressor and etc. and moreover if there is leak of refrigerant at connecting section of pipes, the air is sucked and causes further abnormal high pressure resulted in burst or injury. Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Check the following items after reinstallation. 1) The earth wire is correctly connected. 2) The power cord is not caught in the product. 3) There is no inclination or unsteadiness and the installation is stable. If check is not executed, a fire, an electric shock or an injury is caused. When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe. Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in reputing, injury, etc. When the service panel of the outdoor unit is to be opened in order for the compressor or the area around this part to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the compressor pipes and other parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant gloves designed to protect electricians. Take care not to get burned by compressor pipes or other parts when checking the cooling cycle while running the unit as they get heated while running. Be sure to put on gloves providing protection for electric shock and heat. When the service panel of the outdoor unit is to be opened in order for the fan motor, reactor, inverter or the areas around these parts to be repaired immediately after the air conditioner has been shut down, set the circuit breaker to the OFF position, and then wait at least 10 minutes before opening the service panel. If you fail to heed this warning, you will run the risk of burning yourself because the fan motor, reactor, inverter heat sink and other parts will be very hot to the touch. In addition, before proceeding with the repair work, wear the kind of insulated heat-resistant gloves designed to protect electricians. 8 Installation Only a qualified installer (*1) or qualified service person (*1) is allowed to install the air conditioner. If the air conditioner is installed by an unqualified individual, a fire, electric shocks, injury, water leakage, noise and/or vibration may result. Before starting to install the air conditioner, read carefully through the Installation Manual, and follow its instructions to install the air conditioner. Be sure to use the company-specified products for the separately purchased parts. Use of non-specified products may result in fire, electric shock, water leakage or other failure. Have the installation performed by a qualified installer. Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity overflow may occur on the terminal block and may result in fire. Do not install the air conditioner in a location that may be subject to a risk of exposure to a combustible gas. If a combustible gas leaks and becomes concentrated around the unit, a fire may occur. Install a circuit breaker that meets the specifications in the installation manual and the stipulations in the local regulations and laws. Install the circuit breaker where it can be easily accessed by the qualified service person (*1). If you install the unit in a small room, take appropriate measures to prevent the refrigerant from exceeding the limit concentration even if it leaks. Consult the dealer from whom you purchased the air conditioner when you implement the measures. Accumulation of highly concentrated refrigerant may cause an oxygen deficiency accident. Do not place any combustion appliance in a place where it is directly exposed to the wind of air conditioner, otherwise it may cause imperfect combustion.

Explanations given to user • If you have discovered that the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed. Relocation • Only a qualified installer (*1) or qualified service person (*1) is allowed to relocate the air conditioner. It is dangerous for the air conditioner to be relocated by an unqualified individual since a fire, electric shocks, injury, water leakage, noise and/or vibration may result. • When carrying out the pump-down work shut down the compressor before disconnecting the refrigerant pipe. Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air, etc. to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in reputing, injury, etc. (*1) Refer to the “Definition of Qualified Installer or Qualified Service Person.” 9 SPECIFICATIONS ModelSound pressure level (dBA)Weight (kg) Cooling Heating MML-AP0074NH1-E * * 17 MML-AP0074NH1-TR * * 17 MML-AP0094NH1-E * * 17 MML-AP0094NH1-TR * * 17 MML-AP0124NH1-E * * 17 MML-AP0124NH1-TR * * 17 MML-AP0154NH1-E * * 17 MML-AP0154NH1-TR * * 17 MML-AP0184NH1-E * * 17 MML-AP0184NH1-TR * * 17 * Under 70 dBA Declaration of Conformity

Manufacturer: Authorized Representative/ TCF holder: TOSHIBA CARRIER (THAILAND) CO., LTD. 144/9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambon Banhkadi, Amphur Muang, Pathumthani 12000, Thailand Nick Ball Toshiba EMEA Engineering Director Toshiba Carrier UK LTD. Porsham Close, Belliver Industrial Estate, PLYMOUTH, Devon, PL6 7DB. United Kingdom

Hereby declares that the machinery described below:

Generic Denomination: Model/type: Commercial name: Air Conditioner Indoor unit MML-AP0074NH1-E, MML-AP0094NH1-E, MML-AP0124NH1-E, MML-AP0154NH1-E, MML-AP0184NH1-E, MML-AP0074NH1-TR, MML-AP0094NH1-TR, MML-AP0124NH1-TR, MML-AP0154NH1-TR, MML-AP0184NH1-TR Super Modular Multi System Air Conditioner Super Heat Recovery Multi System Air Conditioner Mini-Super Modular Multi System Air Conditioner (MiNi-SMMS series)

Complies with the provisions of the “Machinery” Directive (Directive 2006/42/EC) and the regulations transposing into national law Complies with the provisions of the following harmonized standard: EN 378-2: 2008+A1:2009 NOTE This declaration becomes invalid if technical or operational modifi cations are introduced without the manufacturer’s consent. 10 • New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refrigerant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner with new refrigerant during installation work or service work. If an incorrect work or incorrect service is performed, there is a possibility to cause a serious accident. Use the tools and materials exclusive to R410A to purpose a safe work. 2. Cautions on Installation/Service (1) Do not mix the other refrigerant or refrigerating oil. For the tools exclusive to R410A, shapes of all the joints including the service port differ from those of the former refrigerant in order to prevent mixture of them. (2) As the use pressure of the new refrigerant is high, use material thickness of the pipe and tools which are specified for R410A. (3) In the installation time, use clean pipe materials and work with great attention so that water and others do not mix in because pipes are affected by impurities such as water, oxide scales, oil, etc. Use the clean pipes. Be sure to brazing with flowing nitrogen gas. (Never use gas other than nitrogen gas.) (4) For the earth protection, use a vacuum pump for air purge. (5) R410A refrigerant is azeotropic mixture type refrigerant. Therefore use liquid type to charge the refrigerant. (If using gas for charging, composition of the refrigerant changes and then characteristics of the air conditioner change.) 3. Pipe Materials For the refrigerant pipes, copper pipe and joints are mainly used. It is necessary to select the most appropriate pipes to conform to the standard. Use clean material in which impurities adhere inside of pipe or joint to a minimum. (1) Copper pipe <Piping> The pipe thickness, flare finishing size, flare nut and others differ according to a refrigerant type. When using a long copper pipe for R410A, it is recommended to select “Copper or copper-base pipe without seam” and one with bonded oil amount 40mg/10m or less. Also do not use crushed, deformed, discolored (especially inside) pipes. (Impurities cause clogging of expansion valves and capillary tubes.) <Flare nut> Use the flare nuts which are attached to the air conditioner unit. (2) Joint The flare joint and socket joint are used for joints of the copper pipe. The joints are rarely used for installation of the air conditioner. However clear impurities when using them. 11 4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below shows the tools exclusive for R410A and their interchangeability. Tools exclusive for R410A (The following tools for R410A are required.) Tools whose specifications are changed for R410A and their interchangeability

No.
Used tool Flare tool Copper pipe gauge for adjusting projection margin Torque wrench Gauge manifold Charge hose Vacuum pump adapter Electronic balance for refrigerant charging Refrigerant cylinder Leakage detector Charging cylinder Usage Pipe flaring Flaring by conventional flare tool Connection of flare nut Evacuating, refrigerant charge, run check, etc. Vacuum evacuating Refrigerant charge Refrigerant charge Gas leakage check Refrigerant charge R410A air conditioner installation Existence of Whether new equipment conventional equipment for R410A can be used Yes ∗(Note 1) Yes ∗(Note 1) Yes No Yes No Yes No Yes Yes Yes No Yes No (Note 2) No Conventional air conditioner installation Whether new equipment can be used with conventional refrigerant Yes ∗(Note 1) No No Yes Yes No Yes No

(Note 1) When flaring is carried out for R410A using the conventional flare tools, adjustment of projection margin is necessary. For this adjustment, a copper pipe gauge, etc. are necessary. (Note 2) Charging cylinder for R410A is being currently developed. General tools (Conventional tools can be used.) In addition to the above exclusive tools, the following equipments which serve also for R22 are necessary as the general tools. 1) Vacuum pump Use vacuum pump by attaching vacuum pump adapter. 2) Torque wrench 8) Spanner or Monkey wrench 3) Pipe cutter 9) Hole core drill 4) Reamer 10) Hexagon wrench (Opposite side 4mm) 5) Pipe bender 11) Tape measure 6) Level vial 12) Metal saw 7) Screwdriver (+, –) Also prepare the following equipments for other installation method and run check. 1) Clamp meter 3) Insulation resistance tester 2) Thermometer 4) Electroscope 12

2. SPECIFICATIONS 2-1. Indoor Unit 50Hz

Model name MML- AP0074NH1 AP0094NH1 AP0124NH1 AP0154NH1 AP0184NH1 Cooling / Heating capacity (Note 1) (kW) 2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3

Pewer Spply 1 Phase 50Hz 230V (220-240V) (Separate power supply for indoor units is required.)

Electrical Caracteristics Running current (A) 0.20 0.20 0.23 0.29 0.42 Pewer consumption (kW) 0.021 0.021 0.025 0.034 0.052 Starting current (A) 0.26 0.26 0.30 0.38 0.55

Appearance Dimension Suction grille and side panel Discharge-grille Bottom surface Height (mm) Width (mm) Depth (mm) Moon white Moon white Moon white 600 700 220

Total weight (kg) Heat exchanger Soundproof / Heat-insulating material Fan 17 Finned tube Formed polystyrene , Polyetyrene Turbo fan

Fan unit Standard air flow (High/Mid/Low) (m3/h) 510/366/282 510/366/282 552/408/324 624/468/384 726/528/426

Motor outlet (W) Air filter Controller 41 Standard filter attached Wireless remote controller (packed with indoor unit)

Conecting pipe Gas side (mm) Liquid side (mm) Drain port (Normal dia.) Φ9.5 Φ6.4 16 (Polypropylene tube) Φ12.7

Sound pressure level (Note 2) (High/Mid/Low) PMV Kit (dB(A)) 38/32/26 38/32/26 40/34/29 43/37/31 47/40/34 Available

Note 1 :The cooling capacities and electrical characteristics are measured under the conditions specified by JIS B 8615 based on the reference piping. The reference piping consists of 5m of main piping and 2.5m of branch piping connected with 0 meter height.. Note 2 :The sound level are mesured in an anechoic chamber in accordance with JIS B 8616. Nomally, The values measured in the actual operaiting environment become larger tan the indicated values due to the effects of external sound.. Note :Rated conditions   Cooling : Indoor air temperature 27℃ DB/19℃WB, Outdoor air temperature 35℃ DB Heating : Indoor air temperature 20℃ DB, Outdoor air temperature 7℃ DB/6℃ WB 13 60Hz Model name MML- AP0074NH1 AP0094NH1 AP0124NH1 AP0154NH1 AP0184NH1 Cooling / Heating capacity (Note 1) (kW) 2.2/2.5 2.8/3.2 3.6/4.0 4.5/5.0 5.6/6.3

Pewer Spply 1 Phase 60Hz 220V (Separate power supply for indoor units is required.)

Electrical Caracteristics Running current (A) 0.17 0.17 0.19 0.25 0.36 Pewer consumption (kW) 0.021 0.021 0.025 0.034 0.052 Starting current (A) 0.22 0.22 0.25 0.33 0.47

Appearance Dimension Suction grille and side panel Discharge-grille Bottom surface Height (mm) Width (mm) Depth (mm) Moon white Moon white Moon white 600 700 220

Total weight (kg) Heat exchanger Soundproof / Heat-insulating material Fan 17 Finned tube Formed polystyrene , Polyetyrene Turbo fan

Fan unit Standard air flow (High/Mid/Low) (m3/h) 510/366/282 510/366/282 552/408/324 624/468/384 726/528/426

Motor outlet (W) Air filter Controller 41 Standard filter attached Wireless remote controller (packed with indoor unit)

Conecting pipe Gas side (mm) Liquid side (mm) Drain port (Normal dia.) Φ9.5 Φ6.4 16 (Polypropylene tube) Φ12.7

Sound pressure level (Note 2) (High/Mid/Low) PMV Kit (dB(A)) 38/32/26 38/32/26 40/34/29 43/37/31 47/40/34 Available

Note 1 :The cooling capacities and electrical characteristics are measured under the conditions specified by JIS B 8615 based on the reference piping. The reference piping consists of 5m of main piping and 2.5m of branch piping connected with 0 meter height.. Note 2 :The sound level are mesured in an anechoic chamber in accordance with JIS B 8616. Nomally, The values measured in the actual operaiting environment become larger tan the indicated values due to the effects of external sound.. Note :Rated conditions   Cooling : Indoor air temperature 27℃ DB/19℃WB, Outdoor air temperature 35℃ DB Heating : Indoor air temperature 20℃ DB, Outdoor air temperature 7℃ DB/6℃ WB 14 3. CONSTRUCTION VIEWS (EXTERNAL VIEWS) Indoor Unit

MML-AP0074NH1-E, -TR MML-AP0094NH1-E, -TR MML-AP0124NH1-E, -TR MML-AP0154NH1-E, -TR 100 0 6 700 Dia. 80mm 70 0 0 1 Connecting pipe AP0074 to MML AP0124 type AP0154 to AP0184 type

MML-AP0184NH1-E, -TR Liquid side dia. 6.35 dia. 6.35

Back body Air inlet grille Front panel Air inlet 0 0 6 Air filter Vertical louver (Upper air outlet) Heat exchanger Air inlet 6 4 1 Gas side 4 0 220 dia. 9.52 dia. 12.7 Air inlet Connecting pipe Gas side Connecting pipe Liquid side 6 7 0

5 4 45 8 3 9 1 1 6 1 18 Dia. 80mm Dia. 80mm Bottom air outlet 75

Knock out system Knock out system Mounting screw Mounting screw 4 0 2 8

56 24 0 9 5 8 4 6 1 2 0 6 0 9 0 01 2 11 41 Space required for

3 6 1 82 26Mounting plate 15 100 47 108 Dia. 80mm 15 40 58 70 125 131 installation and servicing A 15 100 100 100 50 40 1 1 0 2 15 C C Distance

0 0 6 8 8 2 2 7 2 0 5 A B 8 8 C Mounting screw 2 2 7 Dia. 80mm Dia. 80mm 2 0 5 300 or more 300 or more 300 or more

100 60 0 8 3 700 Drain hose 380

Front View Back side View 15 4. WIRING DIAGRAM Model: MML-AP0074NH1-E, -TR, MML-AP0094NH1-E, -TR, MML-AP0124NH1-E, -TR MML-AP0154NH1-E, -TR, MML-AP0184NH1-E, -TR

BLK PMV Stepping motor (Vertical air flow louver) OUTDOOR UNIT

CN22 M MS M 3~ FM 6 5 TB02 BLU 1 1 1 1 1 1 1 U1 U2 U1

( ) BLU ( ) WHI ( ) WHI ( ) WHI CN40

HEAT EXCHANGER RED CN67 (BLK) 1 F301 T3. 15A 250V~ U CN82 CN210 CN33 CN50 CN44 DC 20V ( ) BRW ( ) BLU CN41 ( ) BLU 2 1 2 3 BLU BLK BLK U2 A B WHI 3 5 CN309 POWER SUPPLY CIRCUIT DC 15V DC 12V DC 7V CN71 (CHK) CN100 ( ) BRW CN101 1 2 3 1 t TC1 TC2

( ) YEL CN81 ( ) BLK CN213 ( ) WHI CN72 (DISP) ( ) BLU 2 t

GRN & YEL 1 1 1 1 7 DISPLAY Control P.C. board for indoor unit (MCC-1510) CN102 ( ) YEL 1 2 t TCJ

TB01 L N CN80 CN60 ( ) WHI CN32 ( ) WHI ( GRN ) CN61 ( ) YEL CN103 ( ) GRN CN104 ( ) WHI 1 2 t TA

1 1 1 1 1 1 2 5 INFRARED RAYS RECEIVE

FLOW SELECTOR UNIT (Sold separately) 1~ 50Hz 220-240V 60Hz 220V AND INDICATION PARTSWP-025 FAN DRIVE 1 5 PNL TF A B 1.Broken lines indicate the wiring site. Long dashed short dashed line indicate the accessories. 2. indicates the terminal block. indicates the connection terminal. indicates the connector on the control P.C. board. 3. indicates the protection ground. 4. indicates the control P.C. board. M Stepping motor (Damper) COLOR IDENTIFICATION RED : RED WHI : WHITE YEL : YELLOW BLU : BLUE BLK : BLACK GRY : GRAY PNK : PINK ORN : ORANGE BRW : BROWN GRN : GREEN GRN & YEL : GREEN & YELLOW WIRED REMOTE CONTROLLER (Sold separately)

16 5. PARTS RATING 5-1. Parts Rating

No. 1 2 Parts Name Fan motor (for indoor) Louver motor Type ICF-340-41-1 MP24Z3N Specications Output (Rated) 41W, 340V DC Output (Rated) 1W, 16 poles DC

3 Damper motor MP24Z3N Output (Rated) 1W, 16 poles DC

4 Thermo. Sensor (TA sensor) 5 Heat exchanger sensor (TC1 sensor) 6 Heat exchanger sensor (TC2 sensor) 7 Heat exchanger sensor (TCJ sensor) 8 PMV motor 268mm Ø4.0mm Ø6.0mm Ø6.0mm EFM-MD12TCTH-1 10kΩ at 25°C 10kΩ at 25°C 10kΩ at 25°C 10kΩ at 25°C 12V DC

5-2. Name of Each Part Model : MML-APXXX4NH series Upper air outlet grille/Louver Change the direction of the air to be discharged according to cool/heat mode. Air inlet grille Air in the room is sucked from here.

Air filter Removes dirt or dust. (Provided in the air inlet grille) Lower air outlet grille/Damper 17 Earth screw Earth screws ore provided in the electric parts box.

5-3. Parts Name of Remote Controller Display section In the display example, all indicators are displayed for the explanation. In reality only, the selected contents are indicated. • When turning on the main power switch and leak breaker at the first time, SETTING flashes on the display part of the remote controller. TEMP. ON / OFF • While this display is flashing, the model is being automatically TIMER SET FAN MODE confirmed. VENT SAVE TIME Display section Operation section

Accordingly, wait for a while after SETTING display has disappeared, and then use the remote controller. TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

8 1 9 20 19 2 This remote controller can control the operation of Max. 8 indoor units.

4 6 3 5 17 10 11

7 15 14 18 16 13 12 1 SETTING display Displayed during setup of the timer etc. 2 Operation mode select display The selected operation mode is displayed. 3 CHECK display Displayed while the protective device works or a trouble occurs. 4 Timer time display Time of the timer with H mark is displayed. (When a trouble occurs, the check code is displayed.) 5 Timer SET IN setup display When pushing the Timer SET IN button, the display of the timer is selected in order of [OFF] → [OFF] repeat OFF timer → [ON] → No display. 6 Filter display If “FILTER ” is displayed, clean the air filter. 7 TEST run display Displayed during a test run. 8 Louver position display (4-way Air Discharge Cassette, 2-way Air Discharge Cassette, 1-way Air Discharge Cassette, Under Ceiling, High Wall Type only (2H. 3H)) and Console Displays louver position. 9 SWING display Displayed during up/down movement of the louver. 10 Set up temperature display The selected set up temp. is displayed. 11 Remote controller sensor display Displayed while the sensor of the remote controller is used. 12 PRE-HEAT display (Heat-pump model only) Displayed when the heating operation starts or defrost operation is carried out. While this indication is displayed, the indoor fan stops or the mode enters in LOW. 13 No function display Displayed if there is no function even if the button is pushed. 18

8 1 4 6 2 3 5 9 20 19 17 10 11

7 15 14 18 14 Air volume select display 16 13 12 19 Unit Number display The selected air volume mode is displayed. (AUTO) (HIGH) (MED.) (LOW) 15 Louver Number display (exapmle:01, 02, 03, 04) 16 Operation ready display Displayed when cooling or heating operation is impossible because the outdoor tempera ture goes out of the operable range. 17 Mode select control display Displayed when pushing “Operation mode select ” button while the operation mode is fixed to heating or cooling by the system manager of the air conditioner. 18 Louver lock display (4-way Air Discharge Cassette Type 2H series only) Displayed when there is a louver-locked unit in the group (including 1 indoor unit by 1 outdoor unit). 19 Unit number of the indoor unit selected with the unit select button or abnormal indication of the indoor/outdoor unit. 20 Central control display Displayed when the air conditioner is used under the central control in combination with a central control remote controller. In case the remote controller is disabled by the central control system, flashes. The button operation is not accepted. Even when you push ON/OFF, MODE, or TEMP. button, the button operation is not accepted. (Settings made by the remote controller vary with the central control mode. For details, refer to the Owner’s Manual of the central control remote controller.)

Operation section Push each button to select a desired operation. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing ON / OFF button only. 1 8

12 2 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT 9 10 4

5 3 TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 11 6 7

1 FAN button (Air volume select button) Selects the desired air volume mode. 2 TIMER SET button (Timer set button) TIMER SET button is used when the timer is set up. 3 TEST button (Check button) The CHECK button is used for the check operation. During normal operation, do not use this button. 4 VENT button (Ventilation button) Ventilation button is used when a fan which is sold on the market is connected. • If “No function ” is displayed on the remote controller when pushing the Ventilation VENT button, a fan is not connected. 5 FILTER RESET button (Filter reset button) Resets (Erases) “ FILTER” display. 6 SAVE button (Power save operation) No function 7 SWING/FIX button (Swing/Wind direction button) Selects automatic swing or setting the louver direction. • This function is not provided to Concealed Duct Standard Type, High Static Pressure Type, Floor Standing Cabinet Type, Floor Standing Concealed Type or Slim Duct Type. 8 Operation lamp Lamp is lit during the operation. Lamp is off when stopped. Also it flashes when operating the protection device or abnormal time. 20 9 ON / OFF button When the button is pushed, the operation starts, and it stops by pushing the button again. When the operation has stopped, the operation lamp and all the displays disappear. 10 MODE button (Operation mode select button) Selects desired operation mode. 11 UNIT LOUVER button (Unit/Louver select button) Selects a unit number (left) and louver number (right). UNIT: Selects an indoor unit when adjusting wind direction when multiple indoor units are controlled with one remote controller. LOUVER (4-way Air Discharge Cassette Type 2H series only): Selects a louver when setting louver lock or wind direction adjustment independently. 12 TEMP. button (Set up temperature button) Adjusts the room temperature. Set the desired set temperature by pushing TEMP. or TEMP. . OPTION : Remote controller sensor Usually the TEMP. sensor of the indoor unit senses the temperature. The temperature on the surround ing of the remote controller can also be sensed. For details, contact the dealer from which you have purchased the air conditioner. • In case that one remote controller controls the multiple indoor units, the setup operation is unavailable in group control.

5-4. Correct Usage • When you use the air conditioner for the first time or when you change the SET DATA value, follow the procedure below. From the next time, the operation displayed on the remote controller will start by pushing the ON / OFF button only. Preparation Turn on the main power switch and/or the leakage breaker. • When the power supply is turned on, a partition line is displayed on the display part of the remote controller. ∗ After the power supply is turned on, the remote controller does not accept an operation for approx. 1 minute, but it is not a failure. REQUIREMENT • While using the air conditioner, operate it only with ON / OFF button without turning off the main power switch and the leak breaker. • When you use the air conditioner after it has not been used for a long period, turn on the power switch at least 12 hours before starting operation. 3 Select air volume with “ FAN ” button. One push of the button, and the display changes in the order shown as follows.

2 3 1 4 TEMP. TIMER SET FAN ON / OFF MODE AUTO HIGH MED. LOW

TIME SAVE VENT

TEST FILTER RESET Start SET CL SWING/FIX UNIT LOUVER • When air volume is “ AUTO”, air volume differs according to the room temperature.

1 Push ON / OFF button. The operation lamp goes on, and the operation starts. 2 Select an operation mode with the “MODE MODE ” button. One push of the button, and the display changes in the order shown as follows. • “ DRY mode” function is not provided to Concealed Duct High Static Pressure Type. Cooling only model DRY COOL FAN Heat-pump model HEAT DRY COOL FAN (Dehumidify) Heat Recovery model • In DRY mode, “ AUTO” is displayed and the air volume is LOW. • In heating operation, if the room temperature is not heated sufficiently with VOLUME “ LOW” operation, select “ MED.” or “ HIGH” operation. • The temperature sensor senses temperature near the air inlet of the indoor unit, which differs from the room temperature depending on the installation condition. A value of setting temperature is the measure of room temperature. (“ AUTO” is not selectable in the FAN mode.) • Air volume of function is not provided to “Concealed Duct High Static Pressure Type” but air speed “ HIGH” only is displayed. 4 Determine the set up temperature by pushing the “TEMP. ” or “TEMP. ” button. Stop

AUTO HEAT DRY COOL FAN (Dehumidify) Push ON / OFF button. The operation lamp goes off, and the operation stops. 21

[In case of cooling] • Start the cooling operation after approx. 1 minute. [In case of heating (For Heat-pump model only)] • The heating operation mode is selected in accordance with the room temperature and operation starts after approximately 3 to 5 minutes. • After the heating operation has stopped, FAN operation may continue for approx. 30 seconds. • When the room temperature reaches the set temperature, the super low wind is discharged and the air volume decreases excessively. • During defrost operation, the fan stops so that cool air is not discharged. (“ PRE-HEAT” is displayed.) NOTE When restarting the operation after stop • When restarting the operation immediately after stop, the air conditioner does not operate for approx. 3 minutes to protect the machine. Automatic Operation (Super Heat Recovery Type Only) When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor temperature. 5-5. Adjustment of Wind Direction For best cooling and heating performance, adjust the louvers (adjustment of up/down wind direction) appropriately. CAUTION • If cooling operation is performed with downward air outlet, dew may fall on surface of the cabinet or the horizontal louver resulted in dripping. • If heating operation is performed with horizontal air outlet, unevenness of temperature may increase in the room. • Do not move the horizontal louver directly with hands; otherwise a trouble is caused. Select direction of the horizontal louver using SWING/FIXswitch on the remote controller. The horizontal louver does not stop immediately even if the switch is pushed. Adjusting the stop position, push the switch. 22

FILTER TIMER SET TIME FAN SAVE SWING/FIX MODE VENT

RESET CL

SET TEST Unit select button 1 UNIT LOUVER

How to set up the wind direction 1 Push SWING/FIX during operation. The wind direction changes for every push of the button. [In HEAT operation] Direct the louver (adjustment plate of up/down wind direction) downward. If directing horizontally, hot air may not come to the foot. Initial setup How to stop swinging 1 Push SWING/FIX at a desired position while the louver is swinging. • When SWING/FIX is pushed after that, wind direction can be set again from the highest position. ∗ However, even if SWING/FIX is pushed while the louver is swinging, the louver position is displayed as follows and highest position of the louver may not be selected. Display when swinging is stopped

[In COOL/DRY operation] FAN/HEAT operation COOL/DRY operation

Direct the louver (adjustment plate of up/down wind direction) horizontally. If directing it downward, the dew may form on the surface of the air discharge port and may drop down. Initial setup In this case, push SWING/FIX again two seconds later. • In COOL/DRY operation, the louver does not stop as it directs downward. If stopping the louver as it directs downward during swing operation, it stops after moving to the third position from the highest position. Display when stopping the swing

[In FAN operation] Select a desired wind direction. FAN/HEAT operation Unit select button COOL/DRY operation

Initial setup How to start swinging • When multiple indoor units are controlled with one remote controller, wind direction can be set for each indoor unit by selecting individually. • To set wind direction individually, push UNIT LOUVER 1 Push SWING/FIX , set the louver (adjustment plate of up/down wind direction) direction to the lowest position, and then push SWING/FIX again. SWING is displayed and the up/down wind direction is automatically selected. Display during swinging Repeat button to display an indoor unit number in the control group. Then set the wind direction of the displayed indoor unit. • When no indoor unit number is displayed, all indoor units in the control group can be controlled simultaneously. • Each time you push UNIT LOUVER button, the display changes as follows: Unit No. 1-1 Unit No. 1-3 Unit No. 1-2 No display Unit No. 1-4 23 Q Adjusting airfl ow direction • Adjust the airfl ow direction properly. Otherwise, it might cause discomfort and make the room temperature uneven. • Adjust the vertical airflow using the remote controller. • Adjust the horizontal airfl ow manually. Adjust the vertical airfl ow The air conditioner automatically adjusts the vertical airfl ow direction in accordance with the operating conditions when AUTO or A mode is selected. To set the airfl ow direction you desire Perform this function when the air conditioner is in operation. NOTE • Operating angle of vertical airfl ow louver will be different during cooling, dry and heating operation. • Concerning airfl ow from the lower air outlet grille. In the cooling operation, airfl ow is blown out only from the upper air outlet grille under some operating conditions. In the dry operation, airfl ow is blown out only from the upper air outlet grille. Air ow from the lower air outlet grille (Damper control) Damper is moved (to OPEN or to CLOSED) automatically. To automatically swing the airfl ow direction Perform this function when the air conditioner is in operation. CAUTION • The FIX and SWING buttons will be disabled when the air conditioner is not in operation (including when the ON timer is set). • Do not operate the air conditioner for long hours with the airfl ow direction set downward during the cooling or dry operation. Otherwise, condensation may occur on the surface of the vertical airfl ow louver and cause dew dripping. • Do not move the vertical airfl ow louver manually. Always use the FIX button. If you move the louver manually, it may malfunction during operation. If the louver malfunctions, stop the air conditioner once, and restart. • When the air conditioner is started immediately after it was stopped, the vertical airfl ow louver might not move for 10 seconds or so. • Louver operation is limited when performing group control. (see page 12)

In the COOLING operation, Damper is determined according to room temparature and running time. In the DRY operation, damper is closed. In the HEATING operation , damper is open. COOLING HEATING Operation DRY less than 1H - Running time more than 1H -

- Room temparature Ta≧Tsc+2℃ Ta<Tsc+2℃ - - Bi Flow Upper Flow Upper Flow Upper Flow Bi Flow (When is selected) Lower Flow Airflow air flow Dampe Damper OPEN CLOSED CLOSED CLOSED When [Hi POWER] is selected with wireless remote controller ,running time is cleared once. 24 OPEN

Q Adjust the horizontal airfl ow Preparation • Take hold of the lever on the horizontal airfl ow louver and move them to adjust the airfl ow direction as required. • You can adjust the airfl ow at the left, and right locations of the louver. 25 5-6. Timer Operation • A type of timer operation can be selected from the following three types. (Setting of up to 168 hours is enabled.) OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time. Timer operation

1 TIMER SET TIME FAN SAVE MODE VENT

FILTER SET 2

RESET CL TEST 3 SWING/FIX UNIT LOUVER 4

Set 1 Push TIMER SET button. The timer display (type) changes for every push of the button. Example of remote controller display • In the case of 23.5 hours (∗1)

OFF OFF ON • In the case of 34 hours (∗2)

(OFF timer) (Repeat OFF timer) No display (ON timer)

• SETTING and timer time displays flash. 2 Push TIME to select “SET TIME”. • For every push of button, the set time increases in the unit of 0.5 hr (30 minutes). When setting a time more than 24 hours for timer operation, timer time can be set in the unit of 1 hr. The maximum set time is 168hr (7 days). The remote controller displays the set time with time (between 0.5 and 23.5 hours) (∗1) or number of days and time (24 hours or more) (∗2) as shown below. • For every push of button, the set time decreases in the unit of 0.5 hr (30 minutes) (0.5 to 23.5 hours) or 1 hr (24 to 168 hours). NOTE Number of daysTime shows 1 day (24 hours). shows 10 hours. (Total 34 hours). 3 Push SET button. • SETTING display disappears and timer time display goes on, and or display flashes. (When ON timer is activated, timer time, ON timer are displayed and other displays disappear.) 4 Cancel of timer operation Push CL button. TIMER display disappears.

• When the operation stops after the timer reached the preset time, the Repeat OFF timer resumes the operation by pushing ON / OFF button and stops the operation after the reached the set time. • When you push SWING/FIX while the OFF timer function of the air conditioner is active, the indication of the timer function disappears and then appears again after about 5 seconds. This is due to normal processing of the remote controller. 26 5-7. Installation Installation place CAUTION • Check that the air conditioner is not installed in a place subject to combustible gas leak. Accumulation of combustible gas around the unit may cause a fire. • Drain the dehumidified water from the indoor unit and outdoor unit to a well-drained place. • Do not put any obstacle near the air inlets and air outlet of the outdoor unit. Doing so may hinder the radiation, which may reduce the performance or activate the protective device. Electrical wiring WARNING • Be sure to connect earth wire. (grounding work) Incomplete grounding cause an electric shock. Do not connect ground wires to gas pipes, water pipes, lightning rods or ground wires for telephone wires. CAUTION • Make sure that a leakage breaker is connected. Using the air conditioner without leakage breaker may cause electric shock. • Use a leakage breaker with an appropriate capacity. Be sure to use the rated voltage and an exclusive circuit for power supply of the air conditioner. Do not install the air conditioner in the following places • Do not install the air conditioner in any place within 1 m from a TV, stereo, or radio set. If the unit is installed in such place, noise transmitted from the air conditioner affects the operation of these appliances. • Do not install the air conditioner near a high frequency appliance (sewing machine or massager for business use, etc.), otherwise the air conditioner may malfunction. • Do not install the air conditioner in a humid or oily place, or in a place where steam, soot, or corrosive gas is generated. • Do not install the air conditioner in a salty place such as seaside area. • Do not install the air conditioner in a place where a great deal of machine oil is used. • Do not install the air conditioner in a place where it is usually exposed to strong wind such as in seaside area. • Do not install the air conditioner in a place where sulfureous gas generated such as in a spa. • Do not install the air conditioner in a vessel or mobile crane. • Do not install the air conditioner in an acidic or alkaline atmosphere (in a hot-spring area or near a chemicals factory, or in a place subject to combustion emissions). Corrosion may be generated on the aluminum fin and copper pipe of the heat exchanger. • Do not install the air conditioner near an obstacle (air vent, lighting equipment, etc.) that disturbs discharge air. (Turbulent airflow may reduce the performance or disable devices.) • Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.) • Do not install the air conditioner over an object that must not get wet. (Condensation may drop from the indoor unit at a humidity of 80% or more or when the drain port is clogged.) • Do not install the air conditioner in a place where an organic solvent is used. • Do not install the air conditioner near a door or window subject to humid outside air. Condensation may form on the air conditioner. • Do not install the air conditioner in a place where special spray is used frequently. Be careful with noise or vibrations • Do not install the air conditioner in a place where noise by outdoor unit or hot air from its air outlet annoys your neighbors. • Install the air conditioner on a solid and stable foundation so that it prevents transmission of resonating, operation noise and vibration. • If one indoor unit is operating, some sound may be audible from other indoor units that are not operating. 27 5-8. Maintenance WARNING Be sure to turn off the main power switch prior to the maintenance. • Please do not intend to do the daily maintenance and/or Air Filter cleaning by yourself. Cleaning of the air filter and other parts of the air filter involves dangerous work in high places, so be sure to have a service person do it. Do not attempt it yourself. Cleaning of air filters Clogging of air filters will reduce the cooling and heating performance. 1 When “ FILTER” appears on the remote controller, clean the air filters. 2 When the cleaning of air filters has been completed, 1 push FILTER RESET button. “ FILTER” disappears. TEMP. ON / OFF TIMER SET FAN MODE VENT SAVE TIME

2 CAUTION Cleaning of unit Clean the unit with a soft dry cloth. TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

If dirt cannot be removed with the dry cloth, use a cloth slightly dampened with lukewarm (under 40 °C) water. Cleaning of remote controller • Use a dry cloth to wipe the remote controller. • A cloth dampened with cold water may be used on the indoor unit if it is very dirty. • Never use a damp cloth on the remote controller.

• Do not use a chemically-treated duster for wiping or leave such materials on the unit for long. It may damage or fade the surface of the unit. • Do not use benzine, thinner, polishing powder, or similar solvents for cleaning. These may cause the plastic surface to crack or deform. Periodic check Thinner

Long-period use of the air conditioner may cause deterioration or failure of parts due to heat, humidity, dust, and operating conditions, or may cause poor drainage of dehumidified water. If you do not plan to use the unit for more than 1 month 1) Operate the fan for 3 to 4 hours to dry inside the unit. • Operate “FAN” mode. 2) Stop the air conditioner and turn off the main power switch or the circuit breaker. Checks before operation 1) Check that the air filters are installed. 2) Check that the air outlet or inlet is not blocked. 3) Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner. 28 NOTE • For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation of the air conditioner. When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended. Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary. As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor unit and outdoor unit at least once every 3 months. Ask a professional for this cleaning/maintenance work. Such maintenance can extend the life of the product though it involves the owner’s expense. Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leak age, and even compressor failure. Maintenance List

Part Heat exchanger Fan motor Filter Fan Air inlet/outlet grilles Drain pan Ornamental panel, louvers Check (visual/auditory) • Dust/dirt clogging, scratches • Sound • Dust/dirt, breakage • Vibration, balance • Dust/dirt, appearance • Dust/dirt, scratches • Dust/dirt clogging, drain contamination • Dust/dirt, scratches Maintenance • Wash the heat exchanger when it is clogged. • Take appropriate measures when abnormal sound is generated. • Wash the filter with water when it is contaminated. • Replace it when it is damaged. • Replace the fan when vibration or balance is terrible. • Brush or wash the fan when it is contaminated. • Fix or replace them when they are deformed or damaged. • Clean the drain pan and check the downward slope for smooth drainage. • Wash them when they are contaminated or apply repair coating.

WARNING Re-Installation Ask the dealer or an installation professional to re-install the air conditioner to a new place or move it to another place and to observe the following items. If the air conditioner is inappropriately installed by yourself, it may cause electric shock or fire. CAUTION Be sure to clean the heat exchanger with pressurized water. If an commercially detergent (strong alkaline or acid cleaning agent) is used, the surface treatment of the heat exchanger will be marred, which may degrade the self cleaning performance. For details, contact the dealer. 29

Q Cleaning the air fi lter Clean the air fi lters every 2 weeks. If the air fi lters are covered with dust, the performance of the air conditioner will deteriorate. Clean the air fi lters as often as possible. 1. Open the air inlet grille by gripe at the handle then pull the air inlet grille as the arrow direction. 2. Take hold the left and right handles of air fi lter and push it down to release them from holding slot, then pull it upward to take it out. Filter holder 3. Use a vacuum cleaner to remove the dust from the fi lter or wash them with water. If you wash the air fi lter, dry them in the shade. 4. Insert the lower ribs of air fi lter into the slots then set it into the holding slot. (reverse the procedure number 2) Lower ribs 5. Close the air inlet grille. 30 Q Cleaning the air inlet grille 1. Remove the air inlet grille by release the rope from the hook. 2. Wash it with water using a soft sponge or towel. (Do not use metallic scrubbing brush or the other hard brushed) • Use of such hard objects will cause scratches on the surface of air inlet grille. • If very dirty, clean the air inlet grille with a neutral detergent for kitchen use, and rinse it off with water. 3. Wipe out water from air inlet grille and dry it. 4. Insert the lower hooks of air inlet grille into the slots. Lower hooks 5. Hang the rope at the back side hook then close the air inlet grille. 5-9. Air Conditioner Operations and Performance Check before operation • Check whether earth wire is disconnected or out of place. WARNING • Check that air filter is installed to the indoor unit. • Check that the air outlet or inlet is not blocked. • Turn on the main power switch or the circuit breaker for the main power supply to the air conditioner. Heating capacity (for Heat-pump model only) Turn on the power switch 12 hours or more before starting before operation.

• For heating, a heat pump system which sucks in outside heat air and discharges it into the room is adopted. If temperature of the outside air lowers, the heating capacity decreases. • When temperature of the outside air is low, it is recommended to use other heating equipment together. Defrost operation during heating operation (for Heat-pump model only) • If the outdoor unit has some frost during heating operation, the operation mode changes automatically to defrost mode to increase the heating effect (for approx. 2 to 10 minutes). • During defrost operation, fans of the indoor and the outdoor units stop. 3 minutes protection • The outdoor unit does not operate for approx. 3 minutes after air conditioner has been immediately restarted after stop, or power switch has been turned on. This is to protect the system. Main power failure • If a power failure occurred during the operation, all operations stop. • When restarting the operation, push ON/OFF button again. Fan rotation of stopped unit • While other indoor units operate, the fan on indoor units on “stand-by” rotates to protect the machine once per approx. 1 hour for several minutes. Protective device (High pressure switch) The high pressure switch stops the air conditioner automatically when excessive load is applied to the air conditioner. If the protective device works, the operation lamp keeps lit but the operation stops. When the protective device works, “ ” in the remote controller display part flash. The protective device may work in the following cases. <Cooling operation> • When the air inlet or air outlet of the outdoor unit is blocked. • When strong wind blows continuously against the air outlet of the outdoor unit. <Heating operation> • When dust or dirt is excessively adhered to air filter of the indoor unit. • When the air outlet of the indoor unit is blocked. Cooling/heating operation of Modular Multi system air conditioner • In Modular Multi system air conditioner, each indoor unit can be individually controlled. However, cooling operation and heating operation cannot be performed concurrently for the indoor units which are connected to one outdoor unit. When cooling operation and heating operation are performed concurrently, the indoor unit which is performing cooling operation stops, and “ ” on the display is lit. The indoor unit which is performing heating operation continues operation. If the manager has fixed the setting to COOL or HEAT, other operation than set up one cannot be performed. When other operation than set up one is performed, “ ” on the display is lit and the operation stops. Characteristics of heating operation (for Heat-pump model only) • Hot air is not out immediately after the operation has started. After 3 to 5 minutes (differs according to room or outside temperature) has passed and the indoor heat exchanger has been warmed up, hot air blows out. • During operation, the outdoor unit may stop if outside temperature becomes high. • When other outdoor unit performs heating operation while the fan is operating, the fan operation may be stopped temporarily to prevent blowing of hot air. Air conditioner operating conditions For proper performance, operate the air conditioner under the following temperature conditions: Outdoor temperature : –5°C to 43°C (Dry-bulb temp.)

Cooling operation Heating operation Room temperature : 21°C to 32°C (Dry-bulb temp.), 15°C to 24°C (Wet-bulb temp.) CAUTION Room relative humidity: less than 80 %. If the air conditioner operates in excess of this figure, the surface of the air conditioner may cause dewing. Outdoor temperature : –15°C to 15.5°C (Wet-bulb temp.) Room temperature : 15°C to 28°C (Dry-bulb temp.)

If air conditioner is used outside of the above conditions, safety protection may operate. 31 5-10. When the Following Symptoms are Found Check the points described below before asking repair servicing.

Symptom Outdoor unit • White misty cold air or water is out. • Sometimes, noise “Pushu !” is heard. Indoor unit • “Swish” sound is heard sometimes. • Slight “Pishi!” sound is heard. . e • Discharge air smells. r u l i a f • “ ” indication is lit. a t o n s i t I • Sound or cool air is output from the stand by indoor unit. • When power of the air conditioner is turned on, “Ticktock” sound is heard. • Fan and louvers of the indoor unit moves when the unit is not operated. Operates or stops automatically. Does not operate. . n i a g a Air is not cooled or warmed sufficiently. k c e h C It’s strange. Cause • Fan of the outdoor unit stops automatically and performs defrost operation. • Solenoid valve works when defrost operation starts or finishes. • When the operation has started, during the operation, or immediately after the operation has stopped, a sound such as water flows may be heard, and the operation sound may become larger for 2 or 3 minutes immediately after the operation has started. They are flowing sound of refrigerant or draining sound of dehumidifier. • This is sound generated when heat exchanger, etc. expand and contract slightly due to change of temperature. • Various smell such as one of wall, carpet, clothes, cigarette, or cosmetics adhere to the air conditioner. • When cooling operation cannot be performed because another indoor unit performs heating operation. • When the manager of the air conditioner has fixed the operation to COOL or HEAT, and an operation contrary to the setup operation is performed. • When fan operation stopped to prevent discharge of hot air. • Since refrigerant is flowed temporarily to prevent stay of oil or refriger ant in the stand by indoor unit, sound of flowing refrigerant, “Kyururu” or “Shaa” may be heard or white steam when other indoor unit operates in HEAT mode, and cold air in COOL mode may be blow-out. • Sound is generated when the expansion valve operates when power has been turned on. • Intermittent operation of the fan with louvers open is sometimes carried out for the refrigerant recovery control of unoperated unit. • Is the timer “ON” or “OFF”? • Is it a power failure? • Is the power switch turned off? • Is the power fuse or breaker blown? • Has the protective device operated? (The operation lamp goes on.) • Is the timer “ON”? (The operation lamp goes on.) • Are COOL and HEAT selected simultaneously? (“ ” indication is lit on the display of the remote controller.) • Is the air inlet or air outlet of the outdoor unit obstructed? • Are any door or window open? • Is the air filter clogged with dust? • Is discharge louver of the indoor unit set at appropriate position? • Is air selection set to “LOW” “MED”, and is the operation mode set to “FAN”? • Is the setup temp. the appropriate temperature? • Are COOL and HEAT selected simultaneously? (“ ” indication is lit on the display of the remote controller.) CAUTION

If any of the following conditions occur, turn off the main power supply switch and immediately contact the dealer : • Switch operation does not work properly. • The main power fuse often blows out, or the circuit breaker is often activated. • A foreign matter or water fall inside the air conditioner. • When the air conditioner does not operate even after the cause of the protective device activation has been removed. (The operation lamp and on the remote controller are flashing.) • Any other unusual conditions are observed. 32

Confirmation and check When a trouble occurred in the air conditioner, the check code and the indoor unit No. appear on the display part of the remote controller. The check code is only displayed during the operation. If the display disappears, operate the air conditioner according to the following “Confirmation of error history” for confirmation. Check code Indoor unit No. in which an error occurred

Confirmation of error history When a trouble occurred on the air conditioner, the trouble history can be confirmed with the following procedure. (The trouble history is stored in memory up to 4 troubles.) 2 TEMP. TEST FILTER TIMER SET TIME FAN SAVE ON / OFF MODE VENT

The history can be confirmed from both operating status and stop status. Procedure RESET 3 Description SET CL SWING/FIX UNIT LOUVER 1

When pushing SET and TEST buttons at the same time for 4 seconds or more, the following display appears. If [ Service check] is displayed, the mode enters in the trouble 1 history mode. • [01 : Order of trouble history] is displayed in CODE No. window. • [Check code] is displayed. • [Indoor unit address in which an error occurred] is displayed in UNIT No. Every pushing of [ / ] button used to set temperature, the trouble history stored in memory is displayed in order. 2 The numbers in CODE No. indicate CODE No. [01] (latest) → [04] (oldest). CAUTION Do not push CL button because all the trouble history of the indoor unit will be deleted. 3 After confirmation, push TEST button to return to the usual display. 1. Check the troubles according to the above procedure. 2. Ask an authorized dealer or qualified service (maintenance) professional to repair or maintain the air conditioner. 3. More details of the service code are explained in Service Manual. Check these items. If any of these problems still remains, stop the operation, turn off the leakage breaker, and then notifies the dealer of the serial number and details of the error. Never repair any part by yourself as it is dangerous. When and a combination of , , , , or and a number are displayed on the remote controller, also inform the dealer of the display content. 33 6. REFRIGERATING CYCLE DIAGRAM Liquid side Gas side Strainer Capillary tube Air heat exchanger at indoor side Pulse Motor Valve (PMV) Distributor Sensor

(TCJ) Sensor (TC2) Functional part name Fan Sensor M Fan motor (TA) Functional outline Sensor (TC1)

Pulse Motor Valve PMV Temp. sensor 1. TA 2. TC1 3. TC2 4. TCJ (Connector CN082 (6P): Blue) 1) Controls super heat in cooling operation 2) Controls under cool in heating operation 3) Recovers refrigerant oil in cooling operation 4) Recovers refrigerant oil in heating operation (Connector CN104 (2P): White) 1) Detects indoor suction temperature (Connector CN100 (3P): Brown) 1) Controls PMV super heat in cooling operation (Connector CN101 (2P): Blue) 1) Controls PMV under cool in heating operation (Connector CN102 (2P): Yellow) 1) Controls PMV super heat in cooling operation 34

7. CONTROL OUTLINE 7-1. Control Specifications

No. 1 2 Item When power supply is reset Operation mode selection Outline of specifications 1) Distinction of outdoor unit When the power supply is reset, the outdoors are distinguished and the control is selected according to the distinguished result. 2) If resetting the power supply during occurrence of a trouble, the check code is once cleared. After ON/OFF button of the remote controller was pushed and the operation was resumed, if the abnormal status continues, the check code is again displayed on the remote controller. 1) Based on the operation mode selecting command from the remote controller, the operation mode is selected. Remote Remarks

controller command STOP FAN COOL DRY HEAT AUTO (SHRM only) Control outline Air conditioner stops. Fan operation Cooling operation Dry operation Heating operation • Ta and Ts automatically select COOL/ HEAT operation mode for operation. Ta: Room temp. Ts: Setup temp.

3 Room temp. ∗ Except SHRM, the automatic mode cannot be selected. While a wireless remote controller is used, the mode is notified by “Pi Pi” (two times) receiving sound. To clear the alternate flashing, change the mode on the wireless remote controller. 1) Adjustment range: Remote controller setup temperature (°C)

control Wired type Wireless type COOL/DRY 18 to 29 17 to 30 HEAT 18 to 29 17 to 30 AUTO∗ 18 to 29 17 to 30 ∗ For SHRM only

2) Using the Item code 06, the setup temperature in heating operation can be corrected. Shift of suction tem perature in heating

Setup data Setup temp. correction Setting at shipment Setup data 3 02346 +0°C +2°C +3°C +4°C +6°C operation Except while sensor of the remote controller is controlled (Code No. [32], “0001”)

4 Automatic capacity control 1) Based on the difference between Ta and Ts, the operation capacity is determined by the outdoor unit. 35 Ts: Setup temp. Ta: Room temp.

No. 5 6 Item Air speed selection Prevention of cold air discharge Outline of specifications 1) Operation with (HH), (H), (L) or [AUTO] mode is carried out by the command from the remote controller. For the wireless remote controller type, (HH), (H+), (H), (L+), (L) or [AUTO] operation is carried out. 2) When the air speed mode [AUTO] is selected, the air speed varies by the difference between Ta and Ts. 1. In heating operation, the higher temperature of TC2 sensor and TCJ sensor is compared with temperature of TC1 sensor and then the lower temperature is used to set the upper limit of the fan tap. • When B zone has continued for 6 minutes, the operation shifts to C zone. • In defrost time, the control point is set to +6°C. Remarks HH > H+ > H > L+ > L > UL TCJ: Temperature of indoor heat exchanger sensor • In D and E zones, priority is given to remote control ler air speed setup. • In A zone “ ” is displayed.

( C) 32 30 28 26 20 16 D C E B A A zone: OFF B zone: Over 26 C, below 28 C, ULTRA LOW (LL) C zone: Over 28 C, below 30 C, LOW (L) D zone: Over 30 C, below 32 C, MED (H) E zone: HIGH (HH)

7 Freeze prevention control (Low temp. release) 1. In all cooling operation, the air conditioner operates as described below based upon temp. detected by TC1, TC2 and TCJ sensors. TC1: Temperature of indoor heat exchanger sensor

• When “J” zone is detected for 5 minutes, the thermostat is forcedly off. • In “K” zone, the timer count is interrupted, and held. • When “I” zone is detected, the timer is cleared and the operation returns to the normal operation. • If forced thermo OFF by continuation of “J” zone, operation of the indoor fan in LOW mode continues until it reaches the “I” zone. It is rest when the following conditions are satisfied. Reset conditions 1) TC1 > 12°C and TC2 > 12°C and TCJ > 12°C

2) 20 minutes passed after stop. ( C) ( ) value: When the power supply is

P1 Q1 a K J I P1 Q1 TC1 10°C (5°C) 0°C TC2, TCJ –10°C –14°C turned on, the Forced thermo becomes OFF if the temperature is less than this indicated temperature.

2. In all cooling operation, the air conditioner operates as described below based upon temp. detected by TC2 and TCJ sensors. • When “M” zone is detected for 45 minutes, the thermostat is forcedly off. • In “N” zone, the timer count is interrupted and held. • When shifting to “M” zone again, the timer count restarts and continues. • If “L” zone is detected, the timer is cleared and the operation returns to normal operation. Reset conditions 1) TC1 > 12°C and TC2 > 12°C and TCJ > 12°C 2) 20 minutes passed after stop. ( C) L

P2 Q2 N M 36 P2 Q2 TC2, TCJ 5°C –2.0°C

No. 8 9 10 11 12 13 Item Recovery control for cooling oil (Refrigerant) Recovery control for heating refrigerant (Oil) Compensation control for short intermittent operation Elimination of retained heat HA control Display of filter sign [ ] (Not provided to the wireless type) ∗ Separately set type TCB-AX21E2 is prepared. Outline of specifications The indoor unit which is under STOP/Thermo-OFF status or which operates in [FAN] mode performs the following controls when it received the cooling oil (Refrigerant) recovery signal from the outdoor unit. 1) Opens PMV of the indoor unit with a constant opening degree. 2) Stop the indoor fan. The indoor unit which is under STOP/Thermo-OFF status or which operates in [FAN] mode performs the following controls when it received the heating refrigerant (Oil) recovery signal from the outdoor unit. 1) Opens PMV of the indoor unit with a constant opening degree. 2) Stop the indoor fan. 1) For 3 minutes after start of operation, the operation is forcedly continued even if the unit enters in Thermo-OFF condition. 2) Howev er the thermostat is OFF giv ing prior to COOL/HEAT selection, ready for operation and protective control. 1) When the unit stopped from [HEAT] operation, the indoor fan operates with [L] for approx. 30 seconds. 1) ON/OFF operation is available by input of HA signal from the remote site when connected to remote controller or the remote ON/OFF interface. 2) HA control outputs ON/OFF status to HA terminal. 3) The I/O specifications of HA conform to JEMA standard. 1) The filter sign is displayed with LC by sending the filter-reset signal to the remote controller when the specified time (15 0H) elapsed as a result of integra tion of the operation time of the indoor fan. 2) The integrated timer is cleared when the filter-reset signal is received from the remote controller. In this time, if the specified time elapsed, the counted time is reset and the LC display is deleted. 37 Remarks • Recovery operation is usually performed every 2 hours. • The indoor unit which is under thermo-OFF (COOL) status or which operates in [FAN] mode stops the indoor fan and displays [ ]. • Recovery operation is usually performed every 1 hour. Usually the priority is given to 5 minutes at outdoor controller side. When using HA terminal (CN61) for the remote ON/ OFF, a connector sold separately is necessary. In case of group operation, use the connector to connect HA terminal to either master or follower indoor unit. [ FILTER] goes on. No. 14 Item Display of [ OPERATION READY] [ PRE-HEAT] Outline of specifications <OPERATION READY> Displayed on the remote controller 1) When the following check codes are indicated • Open phase of power supply wiring [P05] was detected. • There is an indoor unit that detected the indoor overflow [P10]. • There is an indoor unit that detected the interlock alarm [L30]. 2) During Force Thermo-OFF • [COOL/DRY] operation is unavailable because the other indoor unit operates with [HEAT] mode. • [HEAT] operation is unavailable because COOL priority (SW11-bit1 of the Outdoor I/F P. C. board is ON) is set and the other indoor unit operates with [COOL/DRY] mode. 3) The above indoor units that cannot operate stay in Thermo-OFF status. 4) The indoor fan stops because the system performs [Recovery operation for heating refrigerant (Oil)]. <PRE-HEAT> Displayed on the remote controller The indoor fan stops in order to prevent discharge of cool air when heating operation started or during heating operation. (including the defrost operation during thermo-OFF) Remarks • < > display No display for wireless remote controller • < > display

15 Selection of central control mode 1) Selection of the contents that can be operated by the remote controller at the indoor unit side is possible according to setting at the central controller side. 2) Setting contents

• In case of TCC-LINK central control

Operation from TCC-LINK central control Individual [Central 1] [Central 2] [Central 3] [Central 4] Operation on RBC-AMT32E ON/OFF Operation Timer Temp. Air speed Air direction setting selection setting setting setting setting × × ×××× × × × On RBC-AMT32E No display [Central control ] display

( : Operation possible ×: Operation impossible) • In case of wired remote controller type, [Central control ] display (Goes on) in the central control mode • Display flashes when an item of the operation prohibited was changed on the remote controller. • In case of wireless remote controller type, the display lamp does not change but the contents that can be operated are same in the central control mode. (∗1) The operation from the wireless remote controller in the central control mode is notified with the receiving sound, Pi, Pi, Pi, Pi, Pi (5 times). (∗1) If the operation select modes are different in the central 2 to 4 from those at the central controller side, the operations Temp. Setting, air volume setting, and air direction setting are inoperable. 38

No. 16 17 Item Louver control Hi POWER operation (Wireless remote controller specific operations) Outline of specifications 1) Louver position setup (Wired type) • The louver position can be set up in the following operation range. In cooling/dry operation In heating/fan operation • In group operation, the louver positions can be set up collectively or individually. 2) Swing setup • The following display is repeated. In all operations (Repeats) • In group operation, the louver positions can be set up collectively or individually. 3) FIX setup (Wireless type) Keep pushing or pushing briefly the FIX button to move the louver in the desired direction. Operating angle of louver will be different during cooling, dry and heating operation. 4) When the unit stopped or the warning was output, the louver is automatically set to full closed position. 5) When PRE-HEAT is displayed (Heating operation started or defrost operation is performed), heating thermo is off, the louver is automatically set to closed. When you push the Hi POWER button during cooling, heating or A operation, the air conditioner will start the following operation. • Cooling operation Performs the cooling operation at 1°C lower than the setting temperature. Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased. When the Hi POWER is selected, running time for the damper control is cleared once. • Heating operation Performs the heating operation at 2°C higher than the setting temperature. Only when the fan speed before the Hi POWER operation is not high, the fan speed will be increased. 39 Remarks • [Hi POWER] Display No. 18 Item COMFORT SLEEP operation (Wireless remote controller specific operations) Outline of specifications When you push the COMFORT SLEEP button during cooling, heating or A operation, the air conditioner will start the following operation. The fan speed display will indicate AUTO and low speed will be used. • Cooling operation In the operation suppression zone, where capacity is kept to the minimum, overcooling is prevented by raising the temperature setting by 1°C after 1 hour and by 2°C after 2 hours of operation. The room temperature is thus regulated between the operation suppression zone and the set temperature. When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer. • Heating operation In the operation suppression zone, where capacity is kept to the minimum, overheating is prevented by lowering the temperature setting by 1°C after 1 hour and by 2°C after 2 hours of operation. The room temperature is thus regulated between the set temperature and the operation suppression zone. When the OFF timer is simultaneously set, 1, 3, 5 and 9 hours appear by turns every pushing COMFORT SLEEP button and one of them can be selected for OFF timer. Remarks • [ ] display

s t r a t s n o it a 1 C Operation suppression zone 2 C s t r a t s n o it a r e Set temperature 2 C 1 C 1 hour

r e pO Set temperature 1 hour 2 hours pO 2 hours Operation suppression zone

19 PRESET operation (Wireless remote controller specific operations) Start the air conditioner in the operation mode which you want the remote controller to memorize. 1) Push and hold the PRESET button for more than 3 seconds while the display flashes. The mark is indicated and the setting is memorized. • If you do not push the PRESET button within 3 seconds or if you push another button, the memory setting is cancelled. • Operation modes which can be memorized with the PRESET button are MODE, Temperatures, FAN, TIMER and Hi POWER. To operate the air conditioner with the setting memorized by the PRESET button. 1) Push the PRESET button briefly. The setting memorized will be indicated and the air conditioner operates with regards to the setting. • The lamp (green) on the display panel of the indoor unit goes on, and operation starts after approximately 3 minutes. • Initial setting: MODE : AUTO Temperature : 22 40 • [ ] display No. 20 21 Item QUIET operation (Wireless remote controller specific operation) SLEEP operation (Wireless remote controller specific operation) Outline of specifications When you push the QUIET button during cooling, heating, fan only or A operation, the air conditioner will start the following operation. • The fan speed display will indicate AUTO and low speed will be used. When the OFF timer is set, 1, 3, 5 and 9 hours appear by turns every pushing SLEEP button and one of them can be selected for OFF timer. Remarks • [ ] display

22 Save operation 1) The function [Save operation] is not provided to the Super Modular Multi series models. 41 • If pushing [SAVE] button “ ” on the remote controller, “No function” is displayed.

8. CONFIGURATION OF CONTROL CIRCUIT 8-1. Indoor Controller Block Diagram 8-1-1. Case of Main (Sub) Remote Controller Connected Main (Sub) master remote controller (Up to 2 sets) Weekly timer

Display part LCD Display part LED CPU Remote controller Function setup Key switch DC5V Power circuit CN2 CN1 *2 LCD driver CPU DC5V Display part LCD Function setup Key switch Secondary battery

Indoor unit #1 communication circuit A B Main P.C. board (MCC-1510) Power circuit A B A B

Central control DC20V U3 Remote controller communication circuit Central control

remote controller (Option) *1 U4 Sensor display P.C. board (MCC-5044) communication circuit DC5V CPU EEPROM TA sensor TC sensor Same Same

Sensor part Damper motor Louver motor LED Driver Outside output Start/Alarm/Ready Thermostat ON COOL/HEAT/FAN DC12V Fan motor control circuit Driver TCJ sensor HA Remote controller A/B setup BUS Communication circuit as left U1U2 L N as left U1U2 L N

Indoor fan motor DC280V Power circuit AC synchronous signal input circuit Power supply Power supply

Max. 8 units are connectable. *1 In group connection, mount the central control remote controller to group header unit. *2 Connection of weekly timer to sub remote controller is unavailable. 42 L N L N Power supply 1Ø 220 – 240V, 50Hz 1Ø 220V, 60Hz U1 U2 U2 U1 Outdoor unit Outdoor unit Outdoor unit

8-1-2. Case of Wireless Remote Controller Kit Connected Indoor unit

Central control #1 U3 Main P.C. board (MCC-1510) DC20V Central control A B Remote controller communication circuit A B A B

remote controller (Option) *1 U4 Sensor display P.C. board (MCC-5044) communication circuit DC5V CPU EEPROM TA sensor TC sensor as leftSame

Sensor part Damper motor Louver motor Indoor LED Driver Outside output Start/Alarm/Ready Thermostat ON COOL/HEAT/FAN DC12V Fan motor control circuit Power Driver AC synchronous TCJ sensor HA Remote controller A/B setup BUS Communication circuit Same U1U2 L N Power as left U1U2 L N Power

fan motor DC280V circuit signal input circuit supply supply

Max. 8 units are connectable. *1 In group connection, mount the central control remote controller to group header unit. 43 L N L N Power supply 1Ø 220 – 240V, 50Hz 1Ø 220V, 60Hz U1 U2 U2 U1 Outdoor unit Outdoor unit Outdoor unit

8-2. Indoor P.C. Board MCC-1510 TCJ sensor CN102, DC 5V TC2 sensor Microcomputer operation LED D02 EEPROM Inter-unit wire

TC1 sensor CN100, DC 5V HA (T10) CN61, DC 12V Damper CN60, DC 12V CHK CN71, DC 5V DISP CN72, DC 5V CN101, DC 5V IC10 CN67, AC 200V Option power supply CN309, AC 200V

Outside error input CN80, DC 12V EXCT CN73, DC 5V Remote controller power LED D203 TA sensor CN104, DC 5V Remote controller CN41, DC 20V Fan drive CN32, DC 12V DC fan input/output CN210 Central control CN40, DC – 5V Terminator resistor provided/not provided Remote controller A/B switch SW01

Louver CN33, DC 12V Display output/Wireless sensor CN213, DC 5V 44

8-2-1.Console-Type P.C. Board Optional Switch/Connector Specifications

Function Connector No. Pin Specifications Remarks No.

Terminator resistor provided/Not provided Remote controller A/B Fan output HA Outside error input CHK Operation check DISP Display mode EXCT Demand SW01 CN32 CN61 CN80 CN71 CN72 CN73 Bit 1 Bit 2 1 2 1 2 3 4 5 6 1 2 3 1 2 1 2 1 2 OFF: No terminator resistor, ON: Terminator resistor provided OFF: Remote controller A ON: Remote controller B DC12V Output Start/Stop input 0V (COM) Handy prohibition input Operation output DC12V (COM) Alarm output DC12V (COM) DC12V (COM) Filter/Option/Outside error input Check mode input 0V Display mode input 0V Demand input 0V 45 Setup at shipment OFF: No terminator resistor. Only 1 unit is ON during central control by custom only. Setup at shipment OFF: Remote controller A Setup at shipment: Linked operation of ON with operation of indoor unit and OFF with stop * The setup of single operation by FAN button on remote controller is executed from remote controller. (DN = 31) HA Start/Stop input (J01: Provided/Not provided = Pulse (At shipment from factory)/Static input switch) Operation stop of handy remote controller is permitted / prohibited by input. ON during operation (Answer back of HA) ON during output of alarm At shipment from factory, the error code “L30” generates and optional error input to stop operation forcedly (DN:2A = 1) is controlled (Display of protection for devices attached to outside) by setup of outside error input (DN:2A = 2) for 1 minute. * Optional error input control is set up on the remote controller. This check is used for operation check of indoor unit. (The specified operation such as indoor fan “H”, drain pump ON, etc. is executed without communication with outdoor unit or remote controller.) Display mode, communication is enabled by indoor unit and remote controller only. (When power supply is turned on.) Timer short (Usual) Indoor unit forced thermo-OFF operation

8-3. Functions at test run Cooling/Heating test run check The test run for cooling/heating can be performed from either indoor remote controller or outdoor interface P.C. board. 1. Start/Finish operation of test run Test run from indoor remote controller Wired remote controller: Refer to the below item of “Test run” of the wired remote controller. Wireless remote controller: Refer to the next page item of “Test run” of the wireless remote controller. In case of wired remote controller <RBC-AMT32E> <RBC-AMS41E>

TEMP. ON / OFF 2, 4 TEMP. ON / OFF 2, 4

TIMER SET FAN MODE 3 3 FILTER UP/DN SCHEDULE FAN MODE

TIME SAVE VENT PROGRAM DAY TIME SAVE VENT

1, FILTER SET SWING/FIX 1, FLT.RESET TEST SET CL SWING/FIX UNIT LOUVER

RESET CL TEST 5 UNIT LOUVER 5

Procedure 1 2 3 4 5 Operation contents Push [TEST] button for 4 seconds or more. TEST [TEST] is displayed at the display part and the mode enters in TEST mode. Push [ON/OFF] button. Change the mode from [COOL] to [HEAT] using [MODE] button. • Do not use [MODE] button for other mode except TEST [COOL]/[HEAT] modes. • The temperature cannot be adjusted during test run. • The error detection is performed as usual. After test run, push [ON/OFF] button to stop the operation. (Display on the display part is same to that in Procedure 1 .) Push [TEST] button to clear the TEST mode. ([TEST] display in the display part disappears and status becomes the normal stop status.)

Note) The test run returns to the normal operation after 60 minutes. 46 In case of wireless remote controller In case of wireless remote controller (Forced test operation is performed in a different way.) REQUIREMENT • For the operation procedure, be sure to follow the Owner’s Manual. • Finish the forced cooling operation in a short time because it applies excessive strength to the air conditioner. • A test operation of forced heating is unavailable. Perform a test operation by heating operation using the switches of the remote controller. However heating operation may be not carried out according to the temperature conditions. • Check wiring/piping of indoor and outdoor units 1. When pushing button for 10 seconds or more, “Pi!” sound is heard and the operation changes to a forced cooling operation. After approx. 3 minutes, a cooling operation starts forcedly. Check cool air starts blowing. If the operation does not start, check wiring again. 2. To stop a test operation, push button once again (Approx. 1 second). The louver closes and the operation stops. • Check transmission of remote controller 1. Push “START/STOP” button of the remote controller to check an operation can also start by the remote controller. • “Cooling” operation by the remote controller may be unavailable according to the temperature conditions. Check wiring/piping of the indoor and outdoor units in forced cooling operation. 47 9. APPLIED CONTROL 9-1. Indoor Unit 9-1-1. Setup of Selecting Function in Indoor Unit (Be Sure to Execute Setup by a Wired Remote Controller) <Procedure> Execute the setup operation while the unit stops.

TEMP. ON / OFF

3 4

5 TIMER SET TIME FAN SAVE MODE VENT

6 1 FILTER RESET TEST SET CL SWING/FIX UNIT LOUVER 2

1 Push SET , CL , and TEST buttons simultaneously for 4 seconds or more. The firstly displayed unit No. indicates the header indoor unit address in the group control. In this time, the fan of the selected indoor unit is turned on. 2 Every pushing UNIT LOUVER button, the indoor unit numbers in the group control are successively displayed. In this time, the fan of the selected indoor unit only is turned on. 3 Specify the item code (DN) using the setup temperature and buttons. 4 Select the setup data using the timer time and buttons. (When selecting the DN code to “33”, change the temperature indication of the unit from “°C” to “°F” on the remote controller.) 5 Push SET button. (OK if display goes on.) • To change the selected indoor unit, return to procedure 2 . • To change the item to be set up, return to procedure 3 . 6 Pushing TEST button returns the status to normal stop status. 48 Table: Function selecting item numbers (DN) (Items necessary to perform the applied control at the local site are described.)

DN 01 02 03 04 06 0d 0F 10 11 12 13 14 1E 28 2A 2E 31 32 33 Item Filter display delay timer Dirty state of filter Central control address Specific indoor unit priority Heating temp shift Existence of [AUTO] cool / heat mode Cooling only Type Indoor unit capacity Line address Indoor unit address Group address Temp difference of [AUTO] mode selection COOL → HEAT, HEAT → COOL Automatic restart of power failure Selection of option/error input (CN80) HA terminal (CN61) select Ventilating fan control TA sensor selection Temperature unit select Description 0000 : None 0001 : 150H 0002 : 2500H 0003 : 5000H 0004 : 10000H 0000 : Standard 0001 : High degree of dirt (Half of standard time) 0001 : No.1 unit to 0064 : No.64 unit 0099 : Unfixed 0000 : No priority 0001 : Priority 0000 : No shift 0001 : +1°C 0002 : +2°C to 0003 : +3°C 0010 : +10°C (Up to +6 recommended) 0000 : Provided 0001 : Not provided (Automatic selection from connected outdoor unit) 0000 : Heat pump 0001 : Cooling only (No display of [AUTO] [HEAT]) 0018: Console 0000 : Unfixed 0001 to 0034 0001 : No.1 unit to 0030 : No.30 unit 0001 : No.1 unit to 0064 : No.64 unit 0000 : Individual 0001 : Header unit of group 0002 : Follower unit of group 0000 : 0 deg to 0010 : 10 deg (For setup temperature, reversal of COOL/HEAT by ± (Data value)/2) 0000 : None 0001 : Restart 0000 : Filter input 0001 : Alarm input (Air washer, etc.) 0002 : Outside error input 0000 : Usual 0001 : Leaving-ON prevention control 0002 : Fire alarm input 0000 : Unavailable 0001 : Available 0000 : Body TA sensor 0001 : Remote controller sensor 0000 : °C (at factory shipment) 0001 : °F 49 At shipment 0001 : 150H 0000 : Standard 0099 : Unfixed 0000 : No priority 0000 : No shift 0001 : Not provided 0000 : Heat pump Depending on model type According to capacity type 0099 : Unfixed 0099 : Unfixed 0099 : Unfixed 0003 : 3 deg (Ts±1.5) 0000 : None 0002 : Outside error input (Interlock) 0000 : Usual (HA terminal) 0000 : Unavailable 0000 : Body TA sensor 0000 : °C

TYPE Item code [10] Setup data 0018 Type Console Abbreviated Model name MML-AP XXX 4NH1 Indoor unit capacity Item code [11] Setup data 0001 0003 0005 0007 0009 Model 007 009 012 015 018

9-1-2. Applied Control in Indoor Unit Remote location ON/OFF control box (TCB-IFCB-4E2) [Wiring and setup] • Use the exclusive connector for connection with the indoor control P.C. board. • In a group control, the system can operate when connecting with any indoor unit (Control P.C. board) in the group. However when taking out the operation/error signal from the other unit, it is necessary to take out from each unit individually. (1) Control items 1) Start/Stop input signal : Operation start/stop in unit 2) Operation signal : Output during normal operation 3) Error signal : Output during alarm (Serial communication error or indoor/outdoor protective device) operation (2) Wiring diagram using remote control interface (TCB-IFCB-4E2) Input IFCB-4E2 : No voltage ON/OFF serial signal Output No voltage contact for operation, error display Contact capacity: Below Max. AC240V 0.5A Indoor control P.C. board

1 1

Start/Stop input ON side

COM (GND) Remote controller prohibition/clear input Operation signal output COM (+12V) Error signal output 2 3 4 5 6 CN61 T10 (YEL) 2 3 4 CN06 1 2 3 4 5 6 CN13 TCB-IFCB-4E2 Start signal input OFF side Stop signal input COM Operation signal output Error signal output

Power supply 220−240V, 50Hz 220V, 60Hz 50 Ventilating fan control from remote controller [Function] • The start/stop operation can be operated from the wired remote controller when air to air heat exchanger or ventilating fan is installed in the system. • The fan can be operated even if the indoor unit is not operating. • Use a fan which can receive the no-voltage A contact as an outside input signal. • In a group control, the units are collectively operated and they can not be individually operated. 1. Operation Handle a wired remote controller in the following procedure. * Use the wired remote controller during stop of the system. * Be sure to set up the wired remote controller to the header unit. (Same in group control) * In a group control, if the wired remote controller is set up to the header unit, both header and follower units are simultaneously operable. 1 Push concurrently SET + CL + TEST buttons for 4 seconds or more. The unit No. displayed firstly indicates the header indoor unit address in the group control. In this time, the fan of the selected indoor unit turns on. 2 Every pushing UNIT LOUVER button, the indoor unit numbers in group control are displayed successively. In this time, the fan of the selected indoor unit only turns on. 3 Using the setup temp or button, specify the item code 31 . 4 Using the timer time or button, select the setup data. (At shipment: ) The setup data are as follows:

Setup data Handling of operation of air to air heat exchanger or ventilating fan Unavailable (At shipment) Available 5 Push SET button. (OK if display goes on.) • To change the selected indoor unit, go to the procedure 2 ). • To change the item to be set up, go to the procedure 3 ). 6 Pushing TEST returns the status to the usual stop status. 2. Wiring Relay (DC12V, procured locally) Corresponds up to a relay in which rated current of the

CN32 FAN DRIVE (2P WHI) 1 2 1 2 Outside control input of fan To terminal operation coil is approx. 75mA

Indoor control P.C. board Note) Determine the cable length between the indoor control P.C. board and the relay within 2m. 51 Leaving-ON prevention control [Function] • This function controls the indoor units individually. It is connected with cable to the control P.C. board of the indoor unit. • In a group control, it is connected with cable to the indoor unit (Control P.C. board), and the item code 2E is set to the connected indoor unit. • It is used when the start operation from outside if unnecessary but the stop operation is necessary. • Using a card switch box, card lock, etc, the forgotten-OFF of the indoor unit can be protected. • When inserting a card, start/stop operation from the remote controller is allowed. • When taking out a card, the system stops if the indoor unit is operating and start/stop operation from the remote controller is forbidden. 1. Control items 1) Outside contact ON : The start/stop operation from the remote controller is allowed. (Status that card is inserted in the card switch box) 2) Outside contact OFF : If the indoor unit is operating, it is stopped forcedly. (Start/Stop prohibited to remote controller) (Status that card is taken out from the card switch box) * When the card switch box does not perform the above contact operation, convert it using a relay with b contact. 2. Operation Handle the wired remote controller switch in the following procedure. * Use the wired remote controller switch during stop of the system. 1 Push concurrently SET + CL + TEST buttons for 4 seconds or more. 2 Using the setup temp or button, specify the item code . 3 Using the timer time or button, set to the setup data. 4 Push SET button. 5 Push TEST button. (The status returns to the usual stop status.)

3. Wiring CN61 1 1 T10 2 2 (YEL) 3 3 4 4 5 5 6 6 Relay (procured locally) * In the figure, the contact indicates a status that the card is taken out. Indoor control P.C. board Power supply Outside contact (Card switch box, etc: Procured locally)

Note) Determine the cable length between the indoor control P.C. board and the relay within 2m. Power peak-cut from indoor unit When the relay is turned on, a forced thermostat-OFF operation starts.

• Wiring example Relay (procured locally)

CN73 1 Note) Determine the cable length between the indoor or 1

2 EXCT 2 (2P plug: RED) outdoor control P.C. board and the relay within 2m. Relay coil signal

Indoor control P.C. board 52 Address setup (Manual setting from Wired remote controller) In case that addresses of the indoor units will be

determined prior to piping work after wiring work • Set an indoor unit per a remote controller. • Turn on power supply. 1 Push SET + CL + TEST buttons simultaneously for 4 seconds or more. 2 (Line address) Using the temperature setup / (Example of 2-lines cabling) (Real line: Cabling, Broken line: Refrigerant pipe) Outdoor Outdoor Indoor Indoor Indoor Indoor Indoor

buttons, set to the CODE No. 3 Using timer time / buttons, set the line address. 4 Push SET button. (OK when display goes on.) 5 (Indoor unit address) Line address → 1 Indoor unit address → 1 Group address → 1 Header unit 122132212222 Follower unit

Using the temperature setup / buttons, set to the CODE No. 6 Using timer time / buttons, set 1 to the line address. 7 Push SET button. (OK when display goes on.) 8 (Group address) Using the temperature setup / buttons, set to the CODE No. 9 Using timer time / buttons, set to Individual, to For the above example, perform setting by connecting singly the wired remote controller without remote controller inter-unit cable. Group address Individual : 0000 Header unit : 0001 Follower unit : 0002 In case of group control

Header unit and to follower unit. 10 Push SET button. (OK when display goes on.) TEMP. 2, 5, 8 END 11 TIMER SET FAN SAVE ON / OFF MODE VENT 3, 6, 9

11 Push TEST button. TEST FILTER SET 4, 7, 10 TIME

CL RESET Setup completes. (The status returns to the usual stop status.) 1 SWING/FIX UNIT LOUVER

<Operation procedure> 1 2 3 4 5 6 7 8 9 10 11 END Note 1) When setting the line address from the remote controller, do not use Address 29 and 30. As they are addresses which cannot be set to the outdoor unit, if they are set, the check code [E04] (Indoor/Outdoor communication circuit error) is issued. Note 2) When an address was manually set from the remote controller and the central control over the refrigerant lines is carried out, perform the following setting for the Header unit of each line. • Set the line address for every line using SW13 and 14 on the interface P.C. board of the Header unit in each line. • Except the least line address No., turn off SW30-2 on the interface P.C. board of the Header units in the lines connected to the identical central control. (Draw the terminal resistances of indoor/outdoor and central control line wirings together.) • For each refrigerant line, connect the relay connector between Header unit [U1U2] and [U3U4] terminals. • After then set the central control address. (For setting of the central control address, refer to the Installation manual for the central remote controller.) 53 Confirmation of indoor unit No. position 1. To know the indoor unit addresses though position of the indoor unit is recognized • In case of individual operation (Wired remote controller : indoor unit = 1 : 1) (Follow to the procedure during operation) <Procedure> 1 Push ON / OFF button if the unit stops. 2 Push UNIT LOUVER button (button at left side). Unit No. 1-1 is displayed on LCD.

(It disappears after several seconds.) The displayed unit No. indicate line address and indoor unit address. TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT 1 Operation

(When other indoor units are connected to the identical remote controller (Group control unit), other unit numbers are also displayed every pushing UNIT LOUVER button (button at left side). TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 2

<Operation procedure> 1 2 END 2. To know the position of indoor unit by address • To confirm the unit No. in the group control (Follow to the procedure during operation) (in this procedure, the indoor units in group control stop.) <Procedure> The indoor unit numbers in the group control are successively displayed, and fan, louver, and drain pump of the corresponding indoor unit are turned on. (Follow to the procedure during operation) 1 Push VENT and TEST buttons simultaneously for 4 seconds or more.

TEMP. • Unit No. is displayed. • Fans and louvers of all the indoor units in the 1 group control operate. TIMER SET TIME FAN SAVE ON / OFF MODE VENT

2 Every pushing UNIT LOUVER button (button at left side), the unit numbers in the group control are successively displayed. 3 • The unit No. displayed at the first time indicates TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 2

the header unit address. • Fan and louver of the selected indoor unit only operate. 3 Push TEST button to finish the procedure. All the indoor units in the group control stop. 54 <Operation procedure> 1 2 3 END

Function selection setup <Procedure> Perform setting while the air conditioner stops. 1 Push TEST + SET + CL buttons simultaneously for 4 seconds or more. The first displayed unit No. is the master indoor unit address in the group control. In this time, fan and louver of the selected indoor unit operate. 2 Every pushing UNIT LOUVER button (button at left side), the indoor unit No. in the group control is displayed one after the other. In this time, fan and louver of the selected indoor unit only operate. 3 Using the set temperature TEMP. buttons, specify the CODE No. (DN). 4 Using the timer time TIME buttons, select the set data. 5 Push SET button. (OK if indication lights) • To change the selected indoor unit, proceed to Procedure 2 . • To change item to be set up, proceed to Procedure 3 . 6 Pushing TEST button returns the status to the normal stop status.

3 6 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT 4 5

1 TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 2

<Operation procedure> 1 2 3 4 5 6 END 55

How to check all the unit No. from an arbitrary wired remote controller <Procedure> Carry out this procedure during stop of system. The indoor unit No. and the position in the identical refrigerant piping can be checked. An outdoor unit is selected, the identical refrigerant piping and the indoor unit No. are displayed one after the other, and then its fan and louver are on. 1 Push the timer time button + TEST simultaneously for 4 seconds or more. First line 1 and CODE No. (Address Change) are displayed. (Select outdoor unit.) 2 Select line address using UNIT LOUVER / SWING/FIX button. 3 Determine the selected line address using SET button. • The address of the indoor unit connected to the refrigerant piping of the selected outdoor unit is dis played and the fan and the louver are on. 4 Every pushing UNIT LOUVER button (button at left side), the indoor unit No. in the identical piping is displayed one after the other. • Only fan and louver of the selected indoor unit start operation. [To select the other line address] 5 Push CL button and the operation returns to Procedure 2. * The indoor address of other line can be continuously checked. 6 Push TEST button and then the procedure finishes.

1 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT

TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 4

6 3 5 <Operation procedure> 1 2 3 4 5 6 END 56 2

How to change all indoor addresses from an arbitrary wired remote controller (It is possible when setting has finished by automatic addresses.) Contents: The indoor unit addresses in each identical refrigerant piping line can be changed from an arbitrary wired remote controller. Enter in address check/change mode and then change the address. <Procedure> Carry out this procedure during stop of system. 1 Push the timer time button + TEST simultaneously for 4 seconds or more. First line 1 and CODE No. (Address Change) are displayed. 2 Select line address using UNIT LOUVER / SWING/FIX button. 3 Push the SET button.

• The address of the indoor unit connected to the TEMP. refrigerant piping of the selected outdoor unit is displayed and the fan and the louver are on. 1 First the current indoor address is displayed. TIMER SET TIME FAN SAVE ON / OFF MODE VENT

(Line address is not displayed.) TEST FILTER RESET 3 SET CL SWING/FIX UNIT LOUVER 2

4 TIME button push up/down the indoor address of the SET DATA. The set data is changed to a new address. 5 Push SET button to determine the set data. 6 Every pushing UNIT LOUVER button (button at left side), the indoor unit No. in the identical piping is displayed one after the other. • Only fan and louver of the selected indoor unit Cancel of line selection If the UNIT No. is not call up here, the outdoor unit in that line does not exist. Push CL button to select a line again in the Procedure 2.

start operation. TEMP. Repeat the Procedures 4 to 6 to change all the indoor addresses so that they are not duplicated. 8 TIMER SET FAN SAVE ON / OFF MODE VENT 4

7 Push SET button. Finish TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 6

(All the indications of LCD go on.) 8 Push TEST button and then the procedure 5 <Operation procedure> When you want to complete the setting 7

finishes. 57 1 2 3 4 5 6 7 8 END

Function to clear error 1. Clearing method from remote controller How to clear error of outdoor unit In the unit of refrigerant line connected by indoor unit of the remote controller to be operated, the error of the outdoor unit currently detected is cleared. (Error of the indoor unit is not cleared.) The service monitor function of the remote controller is utilized. <Method> 1 Push CL + TEST buttons simultaneously for 4 seconds or more to change the mode to service monitor mode. 2 Push TEMP. button to set the CODE No. to [FF]. 3 The display of A part in the following figure is counted as “ ” → “ ” → “ ” → “ ” → “ ” → “ ” with 5-seconds interval. When “ ” appear, the error was cleared. ∗ However counting from “ ” is repeated on the display screen. 4 When pushing TEST button, the status becomes normal. 3

2 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT

4 TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER 1

<Operation procedure> 1 2 3 4 Returns to normal status How to clear error of indoor unit The error of indoor unit is cleared by ON / OFF button of the remote controller. (Only error of the indoor unit connected with remote controller to be operated is cleared.) 58 Monitoring function of remote controller switch When using the remote controller (Model Name: RBC-AMT32E), the following monitoring function can be utilized. Calling of display <Contents> The temperature of each sensor of the remote controller, indoor unit and outdoor unit and the operating status can be checked by calling the service monitor mode from the remote controller. <Procedure> 1 Push TEST + CL buttons simultaneously for 4 seconds or more to call up the service monitor mode. The service monitor goes on and firstly the temperature of the CODE No. is displayed. 2 Push TEMP. button to change CODE No. to the CODE No. to be monitored. For display code, refer to the following table. TEMP. ON / OFF 2 3 Push UNIT LOUVER button to change to CODE No. to FAN TIMER SET MODE be monitored. VENT SAVE TIME

The sensor temperature of indoor unit or 4 TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

outdoor unit in its refrigerant line and the operating status are monitored. 4 Push TEST button to return the status to the normal display. 1 3 Returns to normal display <Operation procedure> 1 2 3 4

a ta d ti n u r o o d n I a ta d m e ts yS CODE No. 00 01 02 03 04 05 08 F2 F3 0A 0B 0C 0D Data name Room temp. (Under control) (Note 1) Room temp. (Remote controller) Indoor suction temp. (TA) Indoor coil temp. (TCJ) Indoor coil temp. (TC2) Indoor coil temp. (TC1) Indoor PMV opening degree Indoor fan accumulated operation time Filter sign time No. of connected indoor units Total HP of connected indoor units No. of connected outdoor units Total HP of connected outdoor units Unit °C °C °C °C °C °C pls h h unit HP unit HP Display form × 1 × 1 × 1 × 1 × 1 × 1 × 1/10 × 100 × 1 × 10 × 10 ) 4 , 3 e to N ( a ta d ti n u r o o dt u o la u di v id n I CODE No. 10 11 12 13 14 15 16 17 18 19 1A 1B 1D 1E 1F Data name Compressor 1 discharge temp. (Td1) Compressor 2 discharge temp. (Td2) High pressure sensor detection pressure (Pd) Low pressure sensor detection pressure (Ps) Suction temp. (TS) Outdoor coil temp. (TE) Liquid side temp. (TL) Outside temp. (TO) Low pressure saturation temp. (TU) Compressor 1 current (I1) Compressor 2 current (I2) PMV1 + 2 opening degree Compressor 1, 2 ON/OFF Outdoor fan mode Outdoor unit HP Unit °C °C MPa MPa °C °C °C °C °C A A pls — — HP Display form × 1 × 1 × 100 × 100 × 1 × 1 × 1 × 1 × 1 × 10 × 10 × 1/10 (Note 2) 0 to 31 × 1

(Note 1) In the group connection, only data of the header indoor unit is displayed. (Note 2) 01: Only compressor 1 is ON. 10: Only compressor 2 is ON. 11: Both compressor 1 and 2 are ON. (Note 3) For the CODE No., an example of header unit is described. 59 (Note 4) Upper girder of CODE No. indicates the outdoor unit No. 1: Header unit (A) 2: Follower unit (B) 3: Follower unit (C) 4: Follower unit (D)

10. TROUBLESHOOTING 10-1. Troubleshooting Summary 1. Before troubleshooting 1) Applied models S-MMS Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXXT8X, MMY-MAPXXXHT7X Super Heat Recovery Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MMY-MAPXXXFT8X Mini-S-MMS Multi type models Indoor unit : MMX-APXXX, Outdoor unit : MCY-MAPXXXHT, MCY-MAPXXXHT2X 2) Required tools / measuring devices • Screwdrivers (Philips, Minus), spanner, radio pinchers, nipper, push pin for reset switch, etc. • Tester, thermometer, pressure gauge, etc. 3) Confirmation before check (The following items are not troubles.)

No. 1 2 3 4 5 6 Operation Compressor does not operate. Indoor fan does not work. Outdoor fan does not rotate, or fan speed changes. Indoor fan does not stop. Start/stop operation on remote controller is unavailable. —— Check items • Is not delayed for 3 minutes? (3 minutes after compressor-OFF) • Is not thermostat OFF? • Is not the fan operating or timer? • Is not the system initially communicating? Heating operation cannot be performed under condition of outside temperature 21°C or higher. Cooling operation cannot be performed under condition of outside temperature –5°C or lower. • Is not the cold draft prevention being controlled in heating operation? • Is not low cooling operation being controlled? • Is not a defrost operation being performed? • Is not after-heat elimination operation being controlled after heating operation? • Is not auxiliary unit or remote control being operated? • Is connecting wire of indoor unit or remote controller correct?

2. Troubleshooting procedure When a trouble occurred, advance the check operation in the following procedure. [E28] error Check the check display on the interface P.C. board

Trouble NOTE Check the check display on the interface P.C. board of the header unit. of the corresponding follower unit. Check position or part in which a trouble occurred. Other error

While a check operation is performed, a malfunction of the microprocessor may be caused due to condition of the power supply or the external noise. If there is any noise source, change wires of the remote controller and signal wires to shield wires. 60 c c o r d in g to th e d e te c te d de A A A A S S S S S S S A A A A A O pe r a t io n T im e r R e a dy F la s h B lo c k d is p la y (∗ ) S e n s o r la m p d is p la y i t ) tr o l le r : R e fe r to S e n s o r la o u td o o r s e gm e n t” in th e fo C - L IN K c e n tr a l c o n tr o l le r c o d e th a t e a c h d e v ic e de he tr o u b le o r de fe c t iv e po p r o v id e d in o r de r to d is p la n tr a l c o n tr o l r e m o te c o n tr v ic e e v e n s a m e e r r o r c o n te n ts s u c h a s c o O th e r in do o r u n it e r r o r In do o r DC fa n e r r o r In do o r o v e r f lo w w a s de te c te d. In do o r AC fa n e r r o r E x te r n a l e r r o r w a s in p u t in in do o r ( In te r lo c k ). D u p l ic a te d c e n tr a l c o n tr o l s ys te m a dd r e s s In do o r c a pa c it y is u n s e t. In do o r g r o u p a dd r e s s is u n s e t. T he r e is g r o u p c a b le in in d iv id u a l in do o r u n i t. D u p li c a te d s e tt in g o f he a de r in in do o r g r o u p In do o r o r o th e r P . C . bo a r d e r r o r D is c h a r ge a ir te m p . s e n s o r (T F ) e r r o r . R o o m te m . S e n s o r (T A ) e r r o r In do o r he a t e x c h a n ge r te m p . s e n s o r (T C 1 ) e r r o r In do o r he a t e x c h a n ge r te m p . s e n s o r (T C 2 ) e r r o r In do o r he a t e x c ha n ge r te m p . s e n s o r (T C J ) e r r o r a n d fo llo w e r in in do o r u n it R e gu la r c o m m u n ic a t io n e r r o r be tw e e n he a d e r C o m m u n ic a t io n e r r o r be tw e e n in do o r M CU D u p l ic a te d in do o r a d d r e s s a n d o u td o o r R e gu la r c o m m u n ic a t io n e r r o r be tw e e n in do o r a n d r e m o te c o n tr o lle r R e gu la r c o m m u n ic a t io n e r r o r be tw e e n in do o r M a in d e fe c t iv e p o s it io n S (S im u l A (A lt e r n (∗ ) : G o e s m p d is p la y ” in th e fo llo w in g ta b le . ll o w in g ta b le . : R e fe r to “ D is p la y o n r e m o te c o n tr o ll e r te c ts . C h e c k th e c h e c k c o n te n ts in th e f s it io n o f th e a ir c o n d it io n e r b y th is s e lf - d y th e o p e r a t io n s ta tu s . o lle r ) a n d o n th e in te r fa c e P . C . bo a r d o f m m u n ic a t io n e r r o r . G r o u p fo ll o w e r u n it c a n n o t be o pe r a te d b y [E 0 3 /L 03 /L 0 7 /L 08 ] a la r m o f he a de r u n it . E r r o r (O v e r - c u r r e n t, lo c k , e tc . ) o f in do o r DC fa n w a s de te c te d. F lo a t s w it c h o pe r a te d. E r r o r o f in do o r AC c a n w a s d e te c te d . (F a n m o to r th e r m a l r e la y o pe r a t io n ) S ys te m a b n o r m a ll y s to p pe d b y in p u t o f e x te r n a l e r r o r (C N 80 ). S e tt in g o f c e n tr a l c o n tr o l s ys te m a dd r e s s is du p lic a te d. C a pa c it y o f in do o r u n it is u n s e t. In do o r g r o u p a dd r e s s is u n s e t . (D e te c te d a ls o a t o u td o o r u n it s id e ) T h e r e is e v e n a n in d o o r u n it c o n n e c te d to g r o u p in in d iv id u a l in d o o r u n i t. T h e r e w e r e m u lt ip le h e a d e r u n it s in a g r o u p. In do o r EEP RO M e r r o r (O th e r e r r o r m a y b e de te c te d . ) O pe n /s ho r t o f d is c ha r ge a ir te m p . s e n s o r w a s de te c te d. O pe n /s ho r t o f r o o m te m p . s e n s o r (T A ) w a s de te c te d. O pe n /s ho r t o f he a t e x c ha n ge r te m p . s e n s o r (T C 1 ) w a s de te c te d. O pe n /s ho r t o f he a t e x c ha n ge r te m p . s e n s o r (T C 2 ) w a s de te c te d. O pe n /s ho r t o f he a t e x c ha n ge r te m p . s e n s o r (T C J ) w a s de te c te d. R e g u la r c o m m u n ic a t io n b e tw e e n h e a de r a n d fo ll o w e r u n it s in in do o r u n it w a s im po s s ib le . C o m m u n ic a t io n e r r o r b e tw e e n M C U o f m a in m o to r m ic r o p r o c e s s o r s A n a dd r e s s s a m e to s e lf a dd r e s s w a s de te c te d. N o c o m m u n ic a t io n fr o m o u td o o r u n it (N o c e n tr a l c o n tr o l s ys te m c o m m u n ic a t io n a ls o ) N o c o m m u n ic a t io n fr o m r e m o te c o n tr o l le r a n d n e tw o r k a da p te r D e s c r ip t io n ta n e o u s ly ) : Tw o LE D f la s h s im u lt a n e o u s ly w he n th e r e a r e tw o f la s h in g LE D. a te ) : F la s h in g c o n d it io n is a lt e r n a te w he n th e r e a r e tw o f la s h in g LE D. o n , : F la s he s , : G o e s o ff & TC C - L IN K c e n tr a l c o n tr o l le r ” in th e fo llo w in g ta b le . o ll o w in g ta b le a c c o r d in g to p o s it io n to be c he c ke d. ia gn o s is fu n c t io n is s h o w n b e lo w . th e o u td o o r u n it , LC D d is p la y pa r t (R e m o te c o n tr o lle r ) o r 7 - s e gm e n t

c c o r d in g to th e d e te c t A b o v e m e n t io n e d) d in g to u n it w it h a la r m — r e m o te c o n tr o lle r ) ( In s ha r e d u s e Is n o t d is p la y e d T im e r R e a dy F la s h lo c k d is p la y (∗ ) n s o r la m p d is p la y T im e r R e a dy F la s h lo c k d is p la y (∗ ) n s o r la m p d is p la y

e d d e v ic e e v e n s a m e e r r o r c o n te n ts s u c h a s c o m m u n ic G r o u p fo llo w e r u n it e r r o r B a tc he d a la r m o f in te r fa c e fo r g e n e r a l- p u r p o s e e qu ip m e n t c o n tr o l T h e r e a r e m u lt ip le n e tw o r k a da p te r s . C e n tr a l c o n tr o l s ys te m c o m m u n ic a t io n (r e c e iv e ) e r r o r C e n tr a l c o n tr o l s y s te m c o m m u n ic a t io n (s e n d ) e r r o r M a in d e fe c t iv e po s it io n D u p lic a te d r e m o te c o n tr o lle r h e a d e r R e m o te c o n tr o lle r c o m m u n ic a t io n (s e n d ) e r r o r c o m m u n ic a t io n ( r e c e iv e ) e r r o r N o r e m o te c o n tr o l le r he a de r u n it , r e m o te c o n tr o lle r M a in d e fe c t iv e po s it io n S (S im u lt a n e o u s A (A lt e r n a te ) (∗ ) : G o e s o n , : F

a t io n e r r o r . (F o r r e m o te c o n tr o ll e r , [∗ ∗ ∗ ] de ta il s is d is p la ye d to ge th e r w it h u n it N o . ) G r o u p fo llo w e r u n it e r r o r e x c lu s iv e to TC C - L IN K /A I- N ET E r r o r o f e qu ip m e n t c o n n e c te d to c o n tr o l in te r fa c e o f th e ge n e r a l- pu r po s e u n it c o m m u n ic a t io n li n e . T he r e w e r e m u lt ip le n e tw o r k a da p te r s (A I- N E T ) o n r e m o te c o n tr o l le r W he n s ig n a l o f c e n tr a l c o n tr o l s ys te m c a n n o t be r e c e iv e d c e n tr a l d e v ic e s (A I- N E T) W he n s ig n a l o f c e n tr a l c o n tr o l s y s te m c a n n o t b e s e n t, th e r e a r e s a m e m u lt ip le D e s c r ip t io n ( In do o r he a de r s to p s w it h a la r m a n d fo ll o w e r u n it c o n t in u e s o p e r a t io n . ) In 2 - r e m o te c o n tr o lle r c o n tr o l, bo th r e m o te c o n tr o ll e r s w e r e s e t to he a de r . W h e n s ig n a l c a n n o t be s e n t to in do o r u n it c o n tr o l le r w a s n o t s e t ( in c lu d in g 2 r e m o te c o n tr o lle r s ) W he n s ig n a l c a n n o t be r e c e iv e d fr o m in do o r u n it , w he n h e a de r o f r e m o te D e s c r ip t io n ly ) : Tw o LE D f la s h s im u lt a n e o u s ly w he n th e r e a r e tw o f la s h in g LE D. : F la s h in g c o n d it io n is a lt e r n a te w he n th e r e a r e tw o f la s h in g LE D. la s he s , : G o e s o ff F 3 1 S F 2 4 A F 2 3 A F 2 2 A F 1 6 A F 1 5 A F 1 2 A F 11 — F 0 8 A F 0 7 A F 0 6 A F 0 5 A F 0 4 A E 3 1 E 2 8 E 2 6 E 2 5 E 2 3 E 2 2 E 2 1 E 2 0 E 1 9 E 1 6 E 1 5 E 1 2 (E 0 8 ) (E 0 4 ) E 0 6 c o n t r o l l e r s O p e r a t i o n T i m e r R e a d y F l a s h N K c e n t r a l & B lo c k d is p la y S e n s o r la m p d is p la y p le ] u n i t ) O u td o o r E EP RO M e r H ig h p r e s s u r e (P d ) s e L o w p r e s s u r e (P s ) s e O u td o o r d is c h a r ge te m O u td o o r p r e s s u r e s e n s O u td o o r te m p . s e n s o r O u td o o r s u c t io n te m p — O u td o o r o u te r a ir te m O u td o o r liq u id te m p . s (T E 1 , TE 2 ) e r r o r O u td o o r he a t e x c h a n O u td o o r d is c ha r ge te m O u td o o r d is c ha r ge te m IP D U c o m m u n ic a t io n Te r m in a l o u td o o r e r r o D e c r e a s e o f c o n n e c te D u p l ic a te d te r m in a l o u o u td o o r u n i ts S e n d e r r o r c o m m u n ic D e c r e a s e o f he a t u n it H e a d e r he a t u n it qu a a dd r e s s in g C o n n e c te d to o th e r lin N o . o f c e n te r o u td o o r O v e r c a pa c i ty N o . o f c o n n e c te d in do T h e r e is n o n e du r in g A u to m a t ic a dd r e s s s ta D u p l ic a te d in do o r a dd In do o r /O u td o o r c o m m D e c r e a s e o f qu a n t it y M a in d e fe ct (C r o r Ou de n s o r e r r o r Ou n s o r e r r o r Ou p . s e n s o r (T D 3 ) e r r o r Op o r (P d , P s ) m is w ir in g Mi (T E 1 , T L ) m is w ir in g Mi . s e n s o r (T S 1 ) e r r o r Op p . s e n s o r (T O ) e r r o r Op e n s o r (T L ) e r r o r Op ge r te m p . s e n s o r Op p . s e n s o r (T D 2 ) e r r o r Op p . s e n s o r (T D 1 ) e r r o r Op e r r o r No (F r Ce (D d o u td o o r u n i ts No td o o r a d d r e s s s e t t in g Ma a t io n be tw e e n Se qu a n t i ty No n t it y e r r o r Th e d u r in g a u to m a t ic In d u n it s e r r o r Th o r u n it s : To a u to a dd r e s s in g. Th Ou r t e r r o r Au (D r e s s Th (→ u n ic a t io n c ir c u it e r r o r Si (D o f in d o o r u n i ts No iv e po s it io n S (S im u lt a n e o u s ly A (A lt e r n a te ) (∗ ) : G o e s o n , : F la e n te r u n it s to p s a la r m td o o r E EP RO M e r r o te c te d du r in g s to p o tp u t v o lt a ge o f h ig h tp u t v o lt a g e o f lo w p e n /S ho r t o f o u td o o r s w ir in g b y o u td o o r p s w ir in g b y te m p . s e n e n /S ho r t o f o u td o o r e n /S ho r t o f o u te r a ir e n /S ho r t o f o u td o o r e n /S ho r t o f h e a t e x c e n /S ho r t o f o u td o o r e n /S ho r t o f o u td o o r c o m m u n ic a t io n o f e o r te r m in a l o u td o o r u n te r o u td o o r u n it d e t e c r e a s e o f c o n n e c te c o m m u n ic a t io n fr o m n u a lly s e t o u td o o r a n d in g to o th e r o u td o c o m m u n ic a t io n fr o m e r e is n o h e a de r h e a o o r u n it o f o th e r lin e e r e is n o c e n te r o u td ta l c a pa c it y o f in do o r e r e is n o s ig n a l r e c e td o o r a u to m a t ic a dd to m a t ic in do o r a dd r e s e te c te d a ls o a t in do o e r e a r e m u lt ip le in do T h e r e is n o c o m m u n gn a l c a n n o t be s e n t t e c r e a s e o f c o n n e c te c o m m u n ic a t io n fr o m ) : Tw o LE D f la s h : F la s h in g c o n d it s he s , : G o e s o f a n d te r m in a r f p c r e o s m s p u r r e e s ( s P o d r . ) r e s s u r e (P s ) s d is c ha r ge te m re ssu re se n so s o r (T E 1 , T L ) s u c t io n te m p. te m p . s e n s o r l iq u id te m p . s e ha n ge r te m p. d is c ha r ge te m d is c ha r ge te m a c h IP D U (P . C n it , d e ta ils a r e e c te d te r m in a d te r m in a l o u t te r m in a l o u td dd r e s s w a s du o r is u n a v a ila b he a t u n it (D e t u n it in th e s y w a s de te c te d o o r u n it o r th e u n it s e x c e e d iv in g fr o m o u t r e s s o pe r a t io n s o pe r a t io n w h r u n it s id e ) o r u n it s h a v in ic a t io n fr o m o o in do o r u n i t. d in do o r u n it s ) in do o r u n it De s im u lt a n e o u io n is a lt e r n f l u n it c o n t in u e s o pe r a t io n . ). s e n s o r d e te c te d 0 o r e r r o r v a lu e w a s e n s o r de te c te d 0. p . s e n s o r (T D 3 ) w a s de te c te d. r (P d , P s ) w a s de te c te d. w a s de te c te d. s e n s o r (T S 1 ) w a s de te c te d. — (T O ) w a s de te c te d. n s o r (T L ) w a s d e te c te d. s e n s o r (T E 1 , TE 2 ) w a s de te c te d. p . s e n s o r (T D 2 ) w a s de te c te d. p . s e n s o r (T D 1 ) w a s de te c te d. . bo a r d ) in in v e r te r b o x d is p la ye d . ) l o u td o o r u n it e r r o r . d o o r u n it s ) o o r u n it p lic a te d. le . c r e a s e o f c o n n e c te d he a t u n it s ) s te m , o r th e r e a r e m u lt ip le he a de r u n it s . du r in g a u to m a t ic a dd r e s s is be e n s e tt in g. r e a r e 2 o r m o r e o u td o o r u n it s in 1 lin e . e d ( to ta l c a p a c it y o f o u td o o r u n it s × 135 %) do o r u n it d u r in g a u to m a t ic a dd r e s s in g. w h ile s e tt in g a u to m a t ic in do o r a dd r e s s il e s e tt in g a u to m a t ic a dd r e s s o f o th e r s ys te m g th e s a m e a dd r e s s . u td o o r u n it . ) s c r ip t io n s ly w he n th e r e a r e tw o f la s h in g LE D. a te w he n th e r e a r e tw o f la s h in g LE D. P 0 5 A P 0 3 A (L 3 0 ) S L 2 9 S L 2 8 S L 2 7 S L 2 6 S L 1 8 S L 1 7 S L 1 0 S L 0 8 S L 0 6 S L 0 5 S L 0 4 S H 1 6 H 0 8 H 0 7 H 0 6 H 2 5 H 1 5 H 0 5 c o n t r o l l e r s O p e r a t i o n T i m e r R e a d y F l a s h N K c e n t r a l & B lo c k d is p la y S e n s o r la m p d is p la y In v e Op Ou Ou IP D N o . N o . N o . Re D is Un Un (D is Du (D is Du Du De (T K O il P r o L o w m is Ou m is Ou m is Ou r te r D C v o lt a ge (V d c ) e r r o r e n pha s e s h o r ta ge : P o w e r fa td o o r u n it d is c ha r ge (T D 1 ) te ts id e e r r o r in p u t in in do o r ( In U qu a n t it y e r r o r o f c o n n e c te d o u td o o r u n it s o f c o n n e c te d he a t u n it e r r o r o f c o n n e c te d h e a t u n it o v e r fr ig e r a n t c h a n ge u n it s ys te m a g r e e d e r r o r o f o u td o o r m o d s e t o u td o o r u n it c a pa c i ty s e t in do o r g r o u p a dd r e s s p la ye d e x c e p t p r io r it y in do o p lic a te d p r io r it y in d o o r u n i ts p la ye d in p r io r it y in d o o r u n it p lic a te d p r io r it y in d o o r u n i ts p lic a te d o u td o o r s ys te m a ddr te c t io n c ir c u it e r r o r 1 to 5 ) e r r o r le v e l d e te c t io n te m p . s e n s o r te c t io n fo r o il le v e l d r o p p r e s s u r e p r o te c t iv e o pe r a ti w ir in g td o o r d is c h a r g e te m p . s e n s o w ir in g td o o r d is c h a r g e te m p . s e n s o w ir in g td o o r d is c h a r g e te m p . s e n s o M a in d e fe c t iv e p o s it io S (S A (A (∗ ) : G il u r e e r r o r m p . e r r o r te r lo c k) o v er e rro r e l r u n i t) ) e ss on r (T D 3) r (T D 2) r (T D 1) n im u lt a n e o u lt e r n a te ) o e s o n , : O v e r c u r W he n po H ig h te m (← In do o T he r e is N o . o f IP N o . o f c o he a t u n it H e a t u n i T he r e a r CO O L /H F o r m e r m C a pa c it y (D e te c te T h e r e is D u p l ic a t D u p l ic a t p ip in g s y D u p li c a t (T K 1 to 5 A ft e r s ta O pe n /S h P r o te c t io P r o te c t io o f TD 3 s M is w ir in o f TD 2 s M is w ir in o f TD 1 s M is w ir in s ly ) : Tw : F F la s he re n we p . e r u in d DU nn e s d t w a e 3 E AT o d o f d a in d e d p e d p s te e d s ) fo r t in o r t n d n b ens g o r ens g o r ens g o r o la s h s , t/ C u r r e n t s h o r ta ge w a r s u p p ly w a s tu r n e d o r r o r w a s d e te c te d a t o n it de te c te d . ) o o r u n it w h ic h a b n o r m (P . C . bo a r d ) in in v e r te c te d o u td o o r u n it s e x e fe c t iv e . s n o t c o n n e c te d , o r c o r m o r e c o n n e c te d he c yc le e r r o r b y m is p ip e l o f o u td o o r u n it (B e o u td o o r u n it is n o t s e t ls o a t in do o r u n it s id e ) o o r u n it w h ic h in do o r r io r it y in d o o r u n it s (F o r io r it y in do o r u n it s (F o m e tt in g o f s ys te m a ddr r o il le v e l d e te c t io n w g c o m p r e s s o r o pe r a t io o f te m p . s e n s o r (T K 1 e te c t io n b y te m p . s e n s y lo w p r e s s u r e (P s ) s e o r w a s de te c te d. m is m o u n t in g o f o u td o o r w a s de te c te d. m is m o u n t in g o f o u td o o r w a s de te c te d. m is m o u n t in g o f o u td o LE D f la s h s im u lt a n in g c o n d it io n is a l : G o e s o ff s d e te c te d a t in v e r te r DC v o lt a g e . n , o pe n ph a s e s ho r ta ge w a s de te c te d. u td o o r d is c ha r ge te m p . s e n s o r (T D 1 ). a l ly s to p s b y o u te r e r r o r in pu t in 1 s ys te m . r b o x is fe w . c e e d e d 4 u n i ts o m b in a t io n o f N o . o f o u td o o r u n it s w it h N o . o f a t u n it s . in g , e tc w a s de te c te d. fo r e 3 s e r ie s ) w a s c o n n e c te d. . (E x c h a n ge s e r v ic e P . C . bo a r d . ) g r o u p a dd r e s s w a s n o t s e t r in do o r u n it s w it ho u t p r io r it y) r p r io r it y in d o o r u n i t) e s s to o u td o o r u n it s o f d if fe r e n t r e fr ig e r a n t a s n o t de te c te d. n , te m pe r a tu r e c h a n ge o f te m p . s e n s o r to 5 ) fo r o il le v e l de te c t io n w a s de te c te d. o r (T K 1 to 5 ) fo r o il le v e l de te c t io n . n s o r w a s de te c te d. o r d is c ha r g e te m p . s e n s o r (T D 3 ) o r c o m in g - o u t o r d is c ha r g e te m p . s e n s o r (T D 2 ) o r c o m in g - o u t o r d is c ha r g e te m p . s e n s o r (T D 1 ) o r c o m in g - o u t D e s c r ip t io n e o u s ly w he n th e r e a r e tw o f la s h in g LE D. te r n a te w he n th e r e a r e tw o f la s h in g LE D.

A H e a t u n i t e r r o r ( M a i n c o d e ) A H i g h p r e s s u r e p r o t e c t i o n o p e r a t i o n A 4 - w a y v a l v e i n v e r t e r r o r A O u t d o o r d i s c h a r g e (T D 3 ) t e m p . e r r o r A O u t d o o r d i s c h a r g e (T D 2 ) t e m p . e r r o r A G a s l e a k d e t e c t i o n A O u t d o o r l i q u i d b a c k d e t e c t i o n e r r o r A T h e r e i s i n d o o r u n i t w h i c h o v e r f l o w w a s d e t e c t e d . A H e a t u n i t w a t e r - s h o r t a g e e r r o r A H e a t s i n k o v e r h e a t e r r o r e r s O p e r a t i o n T i m e r R e a d y F l a s h l & B l o c k d i s p l a y M a i n d e f e c t i v e p o s i t i o n S e n s o r la m p d is p la y S (S im u lt a n e o u A (A lt e r n a te ) (∗ ) : G o e s o n ,

to ge th e r w it h m o de l n u m be r . ) H e a t u n it de te c te d e r r o r (H e a t r e m o te c o n tr o lle r d is p la y s de ta ile d c he c k c o de H ig h p r e s s u r e (P d ) s e n s o r de te c te d p r e s s u r e o v e r s ta n da r d v a lu e . R e fr ig e r a n t c yc le e r r o r w a s de te c te d in he a t in g o pe r a t io n . H ig h te m p . e r r o r w a s de te c te d in o u td o o r d is c ha r g e te m p . s e n s o r (T D 3 ). H ig h te m p . e r r o r w a s de te c te d in o u td o o r d is c ha r g e te m p . s e n s o r (T D 2 ). te m p e r a tu r e o v e r s ta n da r d v a lu e . O u td o o r s u c t io n te m p . s e n s o r (T S 1 ) c o n t in u o u s ly a n d r e pe a te d ly de te c te d h ig h L iq u id ba c k o pe r a t io n w a s ju dg e d fr o m r e fr ig e r a n t c yc le s ta tu s . in 1 s ys te m . (← In do o r u n it d e te c te d . ) T he r e is a b n o r m a lly s to p pe d in do o r u n it w h ic h w a s be e n d e te c te d w a te r - o v e r f lo w (← H e a t u n it d e te c te d . ) T h e r e is h e a t u n it w h ic h w a s be e n de te c te d w a te r - s h o r ta g e in 1 s ys te m . H ig h te m p . e r r o r w a s d e te c te d in o u td o o r IG B T bu il t- in te m p . s e n s o r (T H ). D e s c r ip t io n s ly ) : Tw o LE D f la s h s im u lt a n e o u s ly w he n th e r e a r e tw o f la s h in g LE D. : F la s h in g c o n d it io n is a lt e r n a te w he n th e r e a r e tw o f la s h in g LE D. : F la s he s , : G o e s o ff

th e c o r r e s po n d in g o u td o o r u n it . t iv e e x a m p le s a n d th e y d if fe r a c c o r d in g to th e c o m b in e d o u td o o r u n it s (C o o l in g /H P 2 9 A C o m p r e s s o r p o s i t i o n d e t e c t i o n c i r c u i t s y s t e m e r r o r P 2 6 A G - T r ( I G B T ) s h o r t - c i r c u i t p r o t e c t i o n e r r o r P 2 2 A I P D U f o r o u t d o o r f a n e r r o r P 0 7 A H e a t s i n k o v e r h e a t e r r o r P 0 4 A H i g h p r e s s u r e S W s y s t e m o p e r a t i o n H 0 3 C u r r e n t d e t e c t i o n c i r c u i t e r r o r H 0 2 C o m p r e s s o r e r r o r (L o c k ) H 0 1 C o m p r e s s o r b r e a k d o w n F 1 3 A O u t d o o r I G B T b u i l t - i n t e m p . s e n s o r (T H ) e r r o r c o n t r o l l e r s O p e r a t i o n T i m e r R e a d y F l a s h K c e n t r a l & B l o c k d i s p l a y M a i n d e f e c t i v e p o s i t i o n S e n s o r la m p d is p la y m p l e ] S ( S i m u l t a n e o u s l y ) : T w u n i t ) ( ∗ ) A : ( A G l o t e e r s n a o t n e , ) : F l a s : h F e l

e a t in g f le x , e tc . ). P o s it io n de te c t io n e r r o r o f c o m p r e s s o r m o to r w a s d e te c te d. c o m p r e s s o r m o to r d r iv in g c ir c u it e le m e n t o pe r a te d. S ho r t- c ir c u it p r o te c t iv e o pe r a t io n ( In s ta n ta n e o u s o v e r - c u r r e n t) o f IP DU fo r o u td o o r fa n de te c te d e a c h e r r o r . H ig h te m p . e r r o r w a s de te c te d in o u td o o r IG B T bu ilt - in te m p . s e n s o r (T H ). H ig h p r e s s u r e SW o pe r a te d. A bn o r m a l c u r r e n t w a s d e te c te d du r in g s to p o f c o m p r e s s o r . C o m p r e s s o r lo c k w a s de te c te d. In v e r te r c u r r e n t ( Id c ) d e te c t io n c ir c u it de te c te d o v e r - c u r r e n t. O pe n /S ho r t o f o u td o o r u n it IG B T bu i lt - in te m p . s e n s o r (T H ) w a s d e te c te d. D e s c r ip t io n o LE D f la s h s im u lt a n e o u s ly w he n th e r e a r e tw o f la s h in g LE D. a s h in g c o n d it io n is a lt e r n a te w he n th e r e a r e tw o f la s h in g LE D. s , : G o e s o ff

10-3. Troubleshooting by Check Display on Remote Controller In case of wired remote controller (RBC-AMT32E) 1. Confirmation and check When an error occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is displayed while the air

conditioner operates. If the display disappeared, operate the air conditioner and check the error based upon the following “Confirmation of error history”. Check code Indoor unit No. in which � an error occurred

2. Confirmation of error history When an error occurred on the air conditioner, the error history can be confirmed with the following procedure. 2 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT

(Up to 4 error histories are stored in memory.) This history can be confirmed from either operating status or stop status. Procedure TEST FILTER RESET 3 Description SET CL SWING/FIX UNIT LOUVER 1

When pushing SET and TEST buttons simultaneously for 4 seconds or more, the below display appears. If [ Service Check] is displayed, the mode enters in the error history mode. • [01: Error history order] is displayed in CODE No. window. 1 • [Check Code] is displayed in check code window. • [Indoor unit address with error] is displayed in UNIT No. Every pushing temp. set / buttons, the error histories stored in the memory are displayed in order. The numbers in CODE No. indicates CODE No. [01] (Latest) to [04] (Oldest). 2 CAUTION Do not push CL button because all the error histories of the indoor unit will be deleted. 3 After confirmation, push TEST button to return to the usual display. How to read the check monitor display <7-segment display> <How to read> 76543210 89AbCdEFHJLP 67 In case of central remote controller (TCB-SC642TLE2) ALL ZONE ZONE GROUP CODE

1234 SET DATA No. UNIT No. TEST SETTING R.C. No. GROUP

SELECT ZONE CL SET 1. Confirmation and check When a trouble occurred on the air conditioner, the check code and the indoor unit No. are displayed on the display section of the remote controller. The check code is displayed while the air conditioner operates. If the display disappeared, operate the air conditioner and check the error based upon the following “Confirmation of error history”. Unit No display Alarm display UNIT No. Alternate flashing display R.C No. 2. Confirmation of error history When a trouble occurred on the air conditioner, the error history can be confirmed with the following procedure. (Up to 4 error histories are stored in memory.) This history can be confirmed from either operating or stop. 1) Push and SET buttons in succession for 4 seconds or more. 2) SERVICE CHECK goes on and CODE No. 01 goes on. 3) When selecting (flash) the group number if there is the alarm history, the UNIT number and the latest alarm history are displayed alternately. * In this time, the temperature cannot be set up. 4) To confirm the alarm history other than the latest one, push temp. set / to select CODE No. (01 to 04). 5) To confirm the alarm in the other group, push ZONE and GROUP to select the group number Do not push CL button because all the alarm histories of the currently selected group are deleted. 6) To finish the service check, push button. Unit No display Alarm display UNIT No. Alternate flashing display R.C No. 68 Indoor unit display part (Receiving unit) (Wireless type) When specifying the check code, check 7-segment display on the center unit. For the check code which is not displayed on the outdoor 7-segment, confirm it in Section “10-2 How to Check / Check code display list (Indoor unit)”. : Goes off, : Goes on, : Flash (0.5 second)

Lamp indication Operation Timer Ready No indication at all Operation Timer Ready Check code — E01 Cause of trouble occurrence Power supply OFF or miswiring between receiving unit and indoor unit ⎫⎪⎬⎪⎭ Receiving error Receiving unit Miswiring or wire connection error Sending error

Flash E02 E03 E08 ⎫⎬⎭ Communication interruption between receiving unit and indoor unit ⎫⎬⎭

Operation Timer Ready Flash Operation Timer Ready Alternate flash Operation Timer Ready Alternate flash Duplicated indoor unit No. (Address) Setup error Duplicated header units of remote controller E09 E10 Communication error between MCU on indoor unit P.C. board E12 Automatic address start error E18 Wire connection error between indoor units, indoor power supply OFF Miswiring or wire connection error between indoor unit and outdoor unit E04 (Communication interruption between indoor and outdoor units) Communication (receiving) error between indoor and outdoor units, decrease of No. of E06 connected indoor units E07 Communication (sending) error between indoor and outdoor units E15 No indoor unit during setting of automatic address E16 No. of connected indoor units, capacity over E19 Error of No. of header unit E20 Disagreement of refrigerant pipe communication during setting of automatic address E23 Communication (sending) error between outdoor units E25 Duplicated setting of follower unit address Communication (receiving) error between outdoor units, decrease of No. of connected E26 outdoor units E28 Follower unit error E31 IPDU communication error P01 Indoor fan error P10 Indoor overflow error P12 Indoor fan error P13 Outdoor unit liquid back detection error P03 Outdoor unit discharge temp. (TD1) error P04 Outdoor unit high pressure switch operation Outdoor unit inverter DC voltage (Vdc) error was detected, negative phase error was P05 detected Outdoor unit heat sink overheat error: Heat radiation error of electric part (IGBT) in P07 outdoor unit P15 Gas leak was detected: Short of refrigerant charge amount P17 Outdoor unit discharge temp. (TD2) error P18 Outdoor unit discharge temp. (TD3) error P19 Outdoor unit 4-way valve inverse error P20 High pressure protection error P22 Outdoor unit DC fan error P26 Outdoor unit G-Tr short-circuit error P29 Compressor position detection circuit error P31 Other indoor unit stopped due to error in the group.

69

Lamp indication Check code Cause of trouble occurrence Operation Timer Ready F01 F02 Heat exchanger sensor (TCJ) error ⎫⎪⎪⎪⎬⎪⎪⎪⎭ Heat exchanger sensor (TC2) error

Alternate flash F03 Heat exchanger sensor (TC1) error Temp. sensor error in indoor unit F10 Room temp. sensor (TA) error F11 Discharge air temp.sensor (TF) error

Operation Timer Ready F04 F05 F06 Discharge temp. sensor (TD1) error ⎫⎪⎪⎪⎪⎪⎬⎪⎪⎪⎪⎪⎭ Discharge temp. sensor (TD2) error Heat exchanger sensor (TE1, TE2) error

Alternate flash Operation Timer Ready Simultaneous flash F07 Liquid temp. sensor (TL) error Outdoor unit temp. sensor error F08 Outside temp. sensor (TO) error F12 Suction temp. sensor (TS1) error F13 Heat sink sensor (TH) error Misconnection of heat exchanger sensor (TE) with liquid temp. sensor (TL) F15 → Miswiring of temp. sensor in outdoor unit or miss-mounting Miswiring between high pressure sensor (Pd) and low pressure sensor (Ps) F16 → Misconnection of pressure sensor in outdoor unit F22 Discharge temp. sensor (TD3) error ⎫⎬⎭ F23 Low pressure sensor (Ps) error Pressure sensor error in outdoor unit F24 High pressure sensor (Pd) error F29 Indoor unit EEPROM error

Operation Timer Ready H01 Compressor break-down ⎫⎪⎬⎪⎭

Flash Operation Timer Ready Simultaneous flash Operation Timer Ready Simultaneous flash Operation Timer Ready Simultaneous flash H02 Compressor lock Outdoor unit compressor system error H03 Current detection circuit error H04 Compressor 1 case thermo operation Miswiring or mismounting of outdoor discharge temp. sensor (TD1) or coming-off of H05 TD1 sensor H06 Low pressure (Ps) drop error Protections stop of outdoor unit Oil face drop detection error ⎫⎬⎭ H07 H08 Oil face detection circuit system temp. sensor (TK1, TK2, TK3, TK4, TK5) error Miswiring or mismounting of outdoor discharge temp. sensor (TD2) or coming-off of H15 TD2 sensor H16 Oil face detection circuit system error: Outdoor unit TK1, TK2, TK3, TK4 circuit system error Miswiring or mismounting of outdoor discharge temp. sensor (TD3) or coming-off of H25 TD3 sensor L03 Duplicated header units in indoor unit L05 Duplicated priority indoor unit (Displayed in the room with priority) L06 Duplicated priority indoor unit (Displayed in a room except one with priority) L07 Group cable was connected to individual indoor unit. L08 Indoor group address was unset. L09 Indoor capacity was unset. L04 Duplicated setting of outdoor line address L10 Outdoor capacity was unset. L17 Disagreement error of outdoor unit type L18 Flow selector unit error L20 Duplicated address of central control system L28 No. of connected outdoor units over L29 Defective No. of IPDU L30 Indoor unit outside interlock error F31 Outdoor unit EEPROM error

70 Others (Except check code)

Lamp indication Operation Timer Ready Simultaneous flash Operation Timer Ready Alternate flash Check code — — Cause of trouble occurrence During test run COOL/HEAT disagreement (Automatic cooling/heating setup to automatic cooling/heating unavailable model, heating setup to cooling only model)

71 w a s e x e c u te d. s ta r te d , in do o r a u to m a t ic a d d r e s s • W he n o u td o o r a u to m a t ic a dd r e s s w a s s e tt in g a u to m a t ic a dd r e s s . s t a r t e d , o t he r r e fr ig e r a n t c ir c u it s ys t e m c o n n e c t io n w it h o t he r r e fr ig e r a n t c ir c u it s y s t e m . A u t o m a t ic a dd r e s s s t a r t e r r o r A ll s t o p • W he n in do o r a u t o m a t ic a dd r e s s • S e t u p t he a dd r e s s a g a in a f t e r d is c o n n e c t in g c o m m u n ic a t io n c o m m u n ic a t io n . in d o o r P . C . bo a r d a s s e m b ly u n it o n ly s t o p s . a ft e r p o w e r w a s s u pp lie d o r du r in g C o m m u n ic a t io n e r r o r b e t w e e n C o r r e s p o n d in g C o m m u n ic a t io n w a s n o t s u c c e e d e d • In d o o r P . C . bo a r d fa i lu r e in do o r u n it is o pe r a t in g . ) (H e a de r in d o o r u n it s to p s a n d o th e r c o n t r o lle r s u n it o n ly s t o p s . w ir e le s s ) , b o t h a r e s e t u p a s m a s t e r • C he c k r e m o t e c o n t r o ll e r P . C . bo a r d. D u p l ic a t e d m a s t e r r e m o t e C o r r e s p o n d in g In 2 - r e m o t e c o n t r o l le r c o n t r o l ( in c lu d in g • C he c k r e m o t e c o n t r o lle r s e t u p. a ft e r s e tu p o f in d o o r a dd r e s s . d u p l i c a t e d . • C h e c k t h e c h a n g e o f r e m o t e c o n t r o l l e r c o n n e c t i o n (G r o u p / i n d i v i d u a l ) D u p l ic a te d in d o o r a dd r e s s e s A ll s to p M u lt ip le in d o o r u n it a d d r e s s s e tu p a r e • C h e c k in d o o r a dd r e s s . (D e te c te d a t o u td o o r s id e ) c ir c u it e r r o r c a n n o t c o n t in u e fo r 3 0 s e c o n d s . • C h e c k th e c o m m u n ic a t io n c o n n e c t io n be tw e e n in do o r a n d o u td o o r . In do o r /o u t do o r c o m m u n ic a t io n A ll s t o p T r a n s m is s io n fr o m o u t do o r t o in d o o r • C he c k o u t do o r t e r m in a t o r r e s is t o r s e t u p (S W 3 0 - 2 ). • C he c k o u td o o r P . C . bo a r d ( I/F ) fa ilu r e . • C he c k in do o r P . C . b o a r d fa il u r e . • C he c k c o n n e c to r c o n n e c t io n fo r c o m m u n ic a t io n in o u td o o r P . C . b o a r d. b e e n u s e d t o s e n d s i g n a l s . • C h e c k c o n n e c t o r c o n n e c t i o n f o r c o m m u n i c a t i o n i n i n d o o r P . C . b o a r d . p e r io d fr o m th e in d o o r u n it w h ic h h a s • C he c k c o n n e c t io n o f c o m m u n ic a t io n l in e be tw e e n in do o r a n d o u td o o r . D e c r e a s e d n u m be r o f in do o r u n i ts A ll s to p W he n s ig n a l is n o t s e n t fo r a c e r ta in • C he c k th e p o w e r s u pp ly o f in do o r u n it . (P o w e r - O N) • C h e c k o u td o o r e n d te r m in a l r e s is ta n c e s e tu p (S W 3 0 - 2 ). ( D e t e c t e d a t i n d o o r s i d e ) • C h e c k i n t e r - u n i t c a b l i n g b e t w e e n i n d o o r a n d o u t d o o r . c i r c u i t e r r o r u n i t o n l y s t o p s . c o m m u n i c a t i o n f r o m o u t d o o r u n i t . • C h e c k i n d o o r a d d r e s s s e t u p . In d o o r /o u td o o r c o m m u n ic a t io n C o r r e s p o n d in g In do o r u n it do e s n o t r e c e iv e • C h e c k p o w e r - O N o r d e r o f in do o r /o u td o o r . (D e te c te d a t in d o o r s id e ) c o m m u n ic a t io n a da p te r . in do o r a n d r e m o te c o n tr o ll e r u n it o n ly s to p s . c o n tr o lle r ( in c lu d in g w ir e le s s ) a n d C o m m u n ic a t io n e r r o r b e tw e e n C o r r e s p o n d in g N o c o m m u n ic a t io n fr o m r e m o te • C he c k r e m o te c o n tr o ll e r a n d c o m m u n ic a t io n a d a p te r w ir in g. u n it o n ly s to p s . c o n tr o lle r to in d o o r u n i t. E x c ha n ge r e m o te c o n tr o l le r . R e m o te c o n tr o l le r s e n d in g e r r o r C o r r e s p o n d in g S ig n a l c o u ld n o t be s e n t fr o m r e m o te • C he c k th e c o m m u n ic a t io n w ir e o f r e m o te c o n tr o lle r : • C he c k r e m o te c o n tr o ll e r P . C . bo a r d. (W he n tw o r e m o te c o n tr o lle r s o pe r a te ) • C he c k r e m o te c o n tr o lle r a dd r e s s s e tu p. • C h e c k in do o r P . C . bo a r d e r r o r . (D e t e c t e d a t r e m o t e c o n t r o l l e r s i d e ) • C h e c k i n d o o r p o w e r s u p p l y . rrr i n d o o r a n d r e m o t e c o n t r o l l e r u n i t o n l y s t o p s . i n d o o r P . C . b o a r d a n d r e m o t e c o n t r o l l e r . • C h e c k d i s c o n n e c t i o n , c o n n e c t o r c o n t a c t e r r o r . C o m m u n ic a t io n e r r o r b e tw e e n C o r r e s p o n d in g C o m m u n ic a t io n in te r r u p te d be tw e e n • C he c k r e m o te c o n tr o ll e r in te r - u n it c a b le (A /B ). C h e c k c o d e n a m e S t a t u s E r r o r d e t e c t io n c o n d it io n C h e c k it e m (p o s it io n ) I SYS TE M> n t e r fa c e ) P o s it io n D is p la ye d o n t h e R e m o t e C o n t r o lle r a n d O u t do o r U n it

r m a l o u td l r n i n n l i i e t n s t h e a t D p [ E I o e n u t 2 s

o o r u n it o p 8 ] is d is pl er I /F O un co I /F D fo I /F D ou se I /F C au co I /F O qu I /F H an n it be do o r C C in I /F N au in I /F N it io n ec te d e r a te s . W he n pu s h in g SW 05 s in g ly , th e o pe r a t io n o f fa n is c le a r e d. a ye d o n 7 - s e gm e n t d is p la y o f o u td o o r h e a de r u n it , th e fa n o f o u td o o r u n it w h ic h < C o n v e n ie n t fu n c t io n s > r o r c o de fr o m o u td o o r fo llo w e r u n i t. u t do o r fo ll o w e r u n it A ll s t o p O u t do o r he a de r u n it r e c e iv e d e r r o r • • • i ts w h ic h w a s r e c e iv in g s ig n a l. • n n e c te d o u td o o r c o n s ta n t fr o m th e o u td o o r u n it • e c r e a s e d n u m b e r o f A ll s t o p T h e s ig n a l w a s n o t r e t u r n e d fo r • llo w e r a dd r e s s s e tu p u p a r e d u p lic a te d. D u p lic a t e d o u t do o r A ll s t o p O u t do o r a dd r e s s e s m a n u a lly s e t [N • • td o o r u n i ts m o r e . • n d in g e r r o r b e t w e e n w a s u n a v a il a b le fo r 3 0 s e c o n d s o r • o m m u n ic a t io n A ll s t o p T r a n s m is s io n o f o t he r o u t d o o r u n it • to m a t ic a dd r e s s s ta r te d. n n e c te d du r in g w h e n in do o r a u to m a t ic a dd r e s s m t h e r lin e u n it A ll s t o p U n it o f o t he r lin e w a s c o n n e c t e d Se u n it in 1 lin e . • • T he r e is n o n e o f he a de r o u td o o r • a n t it y e r r o r o u td o o r u n it s in 1 l in e . o u e a d e r o u td o o r u n it A ll s to p • T he r e a r e m u lt ip le he a d e r Th d fo llo w e r u n i ts • tw e e n in do o r h e a d e r u n it o n ly s to p s . in do o r he a de r a n d fo l lo w e r u n i ts • o m m u n ic a t io n e r r o r C o r r e s p o n d in g R e gu la r c o m m u n ic a t io n be tw e e n • bo a r d o f o u td o o r he a de r u n i t. Tu r n o n SW 09 /B it 2 o n I/F P . C. “ N o . c a p a c it y - o v e r d e t e c t io n ” > < S e t u p m e t ho d o f “ N o . c a pa c it y - o v e r de te c t io n ” . s e tu p o f o u td o o r u n it tr o u b le , s e t u p If th is c o de a p pe a r s a ft e r b a c k u p [N o t e ] • a r e m o r e th a n 4 8 u n it s . • N o . o f c o n n e c te d in do o r u n i ts • a pa c it y o v e r c a pa c it y. • do o r u n it s / e x c e e de d 13 5% o f to ta l o u td o o r • o . o f c o n n e c te d A ll s to p • To ta l c a p a c it y o f in do o r u n i ts • • • to m a t ic a dd r e s s • do o r u n it du r in g a u to m a t ic a dd r e s s s ta r t w a s s e t u p. • o c o r r e s po n d in g A ll s to p In do o r u n it is n o t fo u n d w he n in do o r • C h e c k c o d e n a m e S ta tu s E r r o r d e te c t io n c o n d it io n s to pp e d a bn o r m a ll y s ta r ts r o ta t in g. C he c k th e c he c k c o de o f o u td o o r fo llo w e r u n i t. C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . C h e c k c o n n e c t io n o f c o n n e c to r fo r o u td o o r P . C . bo a r d c o m m u n ic a t io n . C he c k c o n n e c t io n o r d is c o n n e c t io n o f c o n n e c t in g w ir e be tw e e n o u td o o r u n it s . C he c k p o w e r s u pp ly o f o u td o o r u n it . ( Is p o w e r s u pp li e d ?) O u td o o r b a c ku p is be in g s e t. o n o t s e t u p th e o u td o o r a d d r e s s m a n u a lly . o t e ] C he c k te r m in a l r e s is ta n c e s e t t in g o f c o m m u n ic a t io n be tw e e n o u td o o r u n i ts C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . C he c k c o n n e c t io n o f c o n n e c to r fo r o u td o o r P . C . bo a r d c o m m u n ic a t io n . C he c k c o n n e c t io n o r d is c o n n e c t io n o f c o n n e c t in g w ir e be tw e e n o u td o o r u n it s . C h e c k p o w e r s u p p ly in o u td o o r u n it . ( Is p o w e r s u p p lie d ?) e th o d in “ A dd r e s s s e tu p ” . p a r a te th e c a b le b e tw e e n lin e s a c c o r d in g to a u to m a t ic a dd r e s s s e tu p C he c k o u td o o r P . C . bo a r d ( I/F ) e r r o r . C he c k c o n n e c t io n o f c o m m u n ic a t io n l in e be tw e e n in do o r a n d o u td o o r . td o o r (U 1 . U 2 ) is th e o u td o o r u n i t. e o u td o o r u n it c o n n e c te d w it h c o m m u n ic a t io n c a b le be tw e e n in do o r a n d C h e c k P . C . bo a r d o f in do o r . C he c k p o w e r c a b li n g o f in do o r . C he c k c a b le o f th e r e m o te c o n tr o l le r . C h e c k th e o u td o o r I/ F P . C . b o a r d e r r o r C he c k th e N o . o f c o n n e c te d in do o r u n it s . C he c k th e in d o o r /o u td o o r c a p a c it y s e tu p C he c k th e H P c a p a c it y o f in do o r u n i t. C he c k th e c o n n e c t io n c a p a c it y o f in do o r u n i t. C h e c k in do o r P . C . bo a r d e r r o r . P o w e r fa ilu r e C he c k th e n o is e o f s u r r o u n d in g d e v ic e s . C h e c k th e e le c tr ic p o w e r lin e e r r o r in in do o r . C he c k th e c o m m u n ic a t io n li n e c o n n e c t io n be tw e e n in do o r a n d o u td o o r . C h e c k it e m (p o s it io n ) IP DU TH s I /F TS 1 In do o r In do I /F TO s I /F T L s I /F TE 1 I /F TD 2 I /F TD 1 In do o r u n it In do In do o r u n it In do In do o r u n it In do 3 IP DU D U F A N I / F I P D U po s it io n D e te c te d i n f i n i t e o r z e r o (O p e n / S h o r t ). → E x c h a n g e C o m p . I P D U P . C . b o a r d . e n s o r e r r o r A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s • I G B T b u i l t - i n t e m p s e n s o r e r r o r • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . i n f i n i t e o r z e r o (O pe n /S h o r t ). • C h e c k c h a r a c t e r i s t i c s o f T S 1 s e n s o r r e s i s t a n c e v a l u e . s e n s o r e r r o r A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s • C h e c k c o n n e c t i o n o f T S 1 s e n s o r c o n n e c t o r . • C he c k in do o r P . C . bo a r d e r r o r . u n i t o n l y s t o p s . i n f i n i t e o r z e r o (O p e n /S h o r t ). • C h e c k c h a r a c t e r i s t i c s o f T A s e n s o r r e s i s t a n c e v a l u e . o r T A s e n s o r e r r o r C o r r e s p o n d i n g • R e s i s t a n c e v a l u e o f s e n s o r i s • C h e c k c o n n e c t i o n / c a b l i n g o f T A s e n s o r c o n n e c t o r . • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . in f in it e o r z e r o (O pe n /S h o r t ). • C he c k c ha r a c t e r is t ic s o f TO s e n s o r r e s is t a n c e v a lu e . e n s o r e r r o r A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s • C h e c k c o n n e c t i o n o f T O s e n s o r c o n n e c t o r . • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . in f in it e o r z e r o (O pe n /S h o r t ). • C he c k c ha r a c t e r is t ic s o f T L s e n s o r r e s is t a n c e v a lu e . e n s o r e r r o r A ll s t o p • R e s is t a n c e v a lu e o f s e n s o r is • C he c k c o n n e c t io n o f T L s e n s o r c o n n e c t o r . • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . i n f i n i t e o r z e r o (O p e n / S h o r t ). • C h e c k c h a r a c t e r i s t i c s o f T E 1 , T E 2 s e n s o r r e s i s t a n c e v a l u e . , TE 2 s e n s o r e r r o r A ll s t o p • R e s is t a n c e v a lu e o f s e n s o r is • C h e c k c o n n e c t io n o f TE 1 , TE 2 s e n s o r c o n n e c t o r . • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . in f in it e o r z e r o (O pe n /S ho r t) • C he c k c ha r a c te r is t ic s o f TD 2 s e n s o r r e s is ta n c e v a lu e . s e n s o r e r r o r A ll s to p • R e s is ta n c e v a lu e o f s e n s o r is • C h e c k c o n n e c t io n o f TD 2 s e n s o r c o n n e c to r . • C h e c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . in f in it e o r z e r o (O pe n /S ho r t) • C he c k c ha r a c te r is t ic s o f TD 1 s e n s o r r e s is ta n c e v a lu e . s e n s o r e r r o r A ll s to p • R e s is ta n c e v a lu e o f s e n s o r is • C h e c k c o n n e c t io n o f TD 1 s e n s o r c o n n e c to r . • C he c k in do o r P . C . bo a r d e r r o r . u n it o n ly s to p s . in f in it e o r z e r o (O pe n /S h o r t ). • C he c k c ha r a c te r is t ic s o f TC 1 s e n s o r r e s is ta n c e v a lu e . o r TC 1 s e n s o r e r r o r C o r r e s p o n d in g • R e s is t a n c e v a lu e o f s e n s o r is • C he c k c o n n e c t io n /c a b lin g o f TC 1 s e n s o r c o n n e c t o r . • C he c k in do o r P . C . bo a r d e r r o r . u n it o n ly s to p s . in f in it e o r z e r o (O pe n /S h o r t ). • C he c k c ha r a c te r is t ic s o f TC 2 s e n s o r r e s is ta n c e v a lu e . o r TC 2 s e n s o r e r r o r C o r r e s p o n d in g • R e s is t a n c e v a lu e o f s e n s o r is • C he c k c o n n e c t io n /c a b lin g o f TC 2 s e n s o r c o n n e c t o r . • C he c k in do o r P . C . bo a r d e r r o r . u n it o n ly s to p s . in f in it e o r z e r o . (O pe n /S h o r t) • C he c k c ha r a c te r is t ic s o f TC J s e n s o r r e s is ta n c e v a lu e . o r TC J s e n s o r e r r o r C o r r e s p o n d in g • R e s is ta n c e v a lu e o f s e n s o r is • C he c k c o n n e c t io n /c a b lin g o f TC J s e n s o r c o n n e c to r . • C he c k e x te r n a l n o is e . i n t e r r u p t e d . • C h e c k o u t d o o r P . C . b o a r d ( I / F , C o m p . , I P D U , F a n I P D U ) e r r o r . (P . C . b o a r d ) in in v e r te r b o x d is c o n n e c t io n be tw e e n IP DU a n d I/ F P . C . b o a r d. c o m m u n ic a t io n e r r o r A ll s to p C o m m u n ic a t io n o f e a c h IP DU • C h e c k c o n n e c t io n o f c o m m u n ic a t io n c o n n e c to r a n d C h e c k c o d e n a m e S t a t u s E r r o r d e t e c t io n c o n d it io n C h e c k it e m (p o s it io n )

e r u n it c s ys C u r C o m C o m O u t r In do P d P s TD 3 m is O u t m is O u t on ed

o n t in u e s o pe r a t io n . w a s de te c te d. t e m e r r o r f l o w e d m o r e t h a n t h e s p e c i f i e d c u r r e n t a n d • C h e c k o u t d o o r P . C . b o a r d ( r e n t de t e c t i o n c i r c u i t A l l s t o p W h i l e h e a de r c o m p r e s s o r s t o p pe d , c u r r e n t • C h e c k c a b l i n g o f c u r r e n t d • C h e c k o u td o o r P . C . bo a r d ( (C he c k a c t iv a t io n e r r o r d u e • C he c k c o n du c t io n o f c a s e • C he c k c o n n e c to r /t e r m in a l • C h e c k c a b le o f c o m p r e s s o a f t e r h e a d e r c o m p r e s s o r h a d s t a r t e d . • C h e c k p o w e r v o l t a g e . (A C 3 p r e s s o r e r r o r ( l o c k ) A l l s t o p O v e r - c u r r e n t w a s de t e c t e d s e v e r a l s e c o n ds • C h e c k c o m p r e s s o r e r r o r . • C he c k o u td o o r P . C . bo a r d ( • C h e c k c a u s e o f a bn o r m a l o v e r - c u r r e n t a n d s t o p p e d . • C h e c k c o m p r e s s o r e r r o r . p r e s s o r b r e a kd o w n A ll s t o p In v e r t e r c u r r e n t de t e c t io n c ir c u it de t e c t e d • C he c k p o w e r v o lt a g e . (A C3 • C he c k o u td o o r P . C . b o a r d (∗ 1 ) n o r m a l l y . • C h e c k p o w e r n o i s e . d o o r EE PR OM e r r o r A ll s t o p O u t d o o r P . C . bo a r d ( I/ F ) d id n o t o pe r a t e • C he c k po w e r v o lt a g e . u n it o n ly s to p s . o r o t he r e r r o r C o r r e s p o n d in g In do o r P . C . b o a r d d id n o t o p e r a t e n o r m a lly . • C he c k in do o r P . C . bo a r d e r P d > 4 . 15M P a du r in g s to p o f c o m p r e s s o r • C he c k o u td o o r P . C . b o a r d (S e n s o r O pe n ) • C h e c k P d s e n s o r e r r o r . s e n s o r e r r o r A ll s to p O u tp u t v o lt a ge o f P d s e n s o r w a s z e r o . • C h e c k c o n n e c t io n o f P d s e • C h e c k S V 4 c ir c u it e r r o r . • C he c k o u td o o r P . C . b o a r d • C he c k 4 - w a y v a lv e e r r o r . • C he c k c o m p r e s s io n e r r o r o • C h e c k P s s e n s o r e r r o r . • C he c k c o n n e c t io n o f P s s e s e n s o r e r r o r A ll s t o p O u t pu t v o lt a g e o f P s s e n s o r w a s z e r o . • M is c o n n e c t io n o f P s s e n s o • C h e c k e r r o r o f o u td o o r P . C (O pe n /S ho r t) • C h e c k r e s is ta n c e v a lu e c h s e n s o r e r r o r A ll s to p S e n s o r r e s is ta n c e v a lu e is in f in it e o r 0 • C he c k c o n n e c t io n o f TD 3 s • C he c k c o m p r e s s io n e r r o r o • C he c k o u td o o r P . C . b o a r d v o l t a g e s o f b o t h s e n s o r s a r e z e r o . • C h e c k p r e s s u r e s e n s o r s P c a b l i n g (P d , P s ) P s s e n s o r w e r e e x c h a n g e d , o r o u t p u t • C h e c k c o n n e c t i o n o f l o w - p do o r p r e s s u r e s e n s o r A ll s t o p H ig h - p r e s s u r e P d s e n s o r a n d lo w - p r e s s u r e • C he c k c o n n e c t io n o f h ig h- c o n t in u e d fo r 3 m in u te s o r m o r e . t h a n t h a t o f T L b y t h e s p e c i f i e d v a l u e • C h e c k o u t d o o r P . C . b o a r d c a b l in g (T E 1 , T L) m o d e , th e TE 1 de te c t io n te m p w a s h ig h e r • C he c k c ha r a c te r is t ic s o f TE do o r te m p s e n s o r A ll s to p D u r in g o pe r a t io n o f c o m p r e s s o r in H E AT • C he c k in s ta l la t io n o f TE 1 s C h e c k c o d e n a m e S ta tu s E r r o r d e te c t io n c o n d it io n C C o m p . IP DU ) e r r o r . e te c t io n c ir c u it s ys te m . C o m p . IP DU ) e r r o r . to li qu id s ta gn a t io n in c o m p r e s s o r . ) he a te r . c o n n e c t io n o n IP DU P . C . bo a r d. r a n d pha s e - m is s in g. 80 – 4 15 V ± 1 0% ). C o m p . IP D U ) e r r o r . o v e r lo a d o pe r a t io n . 80– 41 5V ± 10% ). ( I/ F ) e r r o r . r o r (E EPR OM e r r o r ). ( I/ F ) e r r o r . n so r co n n e c to r . ( I/ F ) e r r o r . f c o m p r e s s o r . n so r co n n e c to r . r a n d P d s e n s o r c o n n e c to r s . bo a r d ( I/F ). a r a c te r is t ic s o f TD 3. e n so r co n n e c to r . f c o m p r e s s o r . ( I/ F ) e r r o r . d a n d P s e r r o r . r e s s u r e P s s e n s o r c o n n e c to r . p r e s s u r e P d s e n s o r c o n n e c to r . ( I/ F ) e r r o r . 1 a n d T L s e n s o r r e s is ta n c e v a lu e . e n s o r a n d T L s e n s o r . h e c k it e m (p o s it io n ) • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . (O pe n /S ho r t ) • C he c k c ha r a c t e r is t ic s o f TK 5 s e n s o r r e s is t a n c e v a lu e . A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s i n f i n i t e o r z e r o . • C h e c k c o n n e c t i o n o f T K 5 s e n s o r c o n n e c t o r . • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . (O pe n /S ho r t ) • C he c k c ha r a c t e r is t ic s o f TK 4 s e n s o r r e s is t a n c e v a lu e . A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s i n f i n i t e o r z e r o . • C h e c k c o n n e c t i o n o f T K 4 s e n s o r c o n n e c t o r . • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . (O pe n /S ho r t ) • C he c k c ha r a c t e r is t ic s o f TK 3 s e n s o r r e s is t a n c e v a lu e . A l l s t o p • R e s i s t a n c e v a l u e o f s e n s o r i s i n f i n i t e o r z e r o . • C h e c k c o n n e c t i o n o f T K 3 s e n s o r c o n n e c t o r . • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . (O pe n /S ho r t) • C he c k c ha r a c te r is t ic s o f TK 2 s e n s o r r e s is ta n c e v a lu e . A ll s t o p • R e s is t a n c e v a lu e o f s e n s o r is in f in it e o r z e r o . • C he c k c o n n e c t io n o f TK 2 s e n s o r c o n n e c t o r . • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . s e n s o r e r r o r (O pe n /S ho r t) • C he c k c ha r a c te r is t ic s o f TK 1 s e n s o r r e s is ta n c e v a lu e . F O il le v e l de t e c t iv e t e m p A ll s t o p • R e s is t a n c e v a lu e o f s e n s o r is in f in it e o r z e r o . • C he c k c o n n e c t io n o f TK 1 s e n s o r c o n n e c t o r . • C h e c k c lo gg in g o f o il- e qu a t io n c ir c u i t. • C h e c k c lo gg in g o f o il s e p a r a to r o il r e tu r n c ir c u i t. • C h e c k e r r o r o f SV 3A , SV 3B , S V 3C , SV 3D , a n d SV 3E v a lv e s . • C h e c k r e fr ig e r a n t s ta gn a t io n in c o m p r e s s o r . • C he c k g a s le a k a n d o i l le a k in th e s a m e l in e . • C he c k c ha r a c te r is t ic s o f TK 1 , TK 2 , TK 3 , a n d TK 4 r e s is ta n c e v a lu e s . • C he c k c o n n e c t io n a n d in s ta l la t io n o f TK 1 , TK 2 , TK 3 , a n d TK 4 s e n s o r s . d r o p d e t e c t i o n c o n t i n u o u s l y f o r 2 h o u r s . • C h e c k f u l l o p e n i n g o f s e r v i c e v a l v e o f b a l a n c e p i p e . F P r o t e c t i o n fo r o i l l e v e l A l l s t o p T h e o pe r a t i n g c o m p r e s s o r de t e c t e d o i l s h o r t a ge < C h e c k a l l t h e o u t do o r u n it s in t h e c o r r e s p o n d in g l in e . > • C he c k r e fr ig e r a n t s ho r ta g e . (A ll h e a t in g , m a in ly he a t in g , p a r t c o o l in g o pe r a t io n ) • C he c k o u td o o r fa n o pe r a t io n . • C he c k r e fr ig e r a n t p ip e c lo g g in g. • C he c k v a lv e o pe n o f in do o r PM V. • C h e c k in do o r a ir f ilt e r c lo gg in g. • C he c k lo w - p r e s s u r e P s s e n s o r e r r o r . • C he c k S V 2 c ir c u it a n d SV 4 c ir c u it e r r o r . • C h e c k o u td o o r PM V c lo g g in g . (P M V 1 , 2) o pe r a t io n 0 . 02M P a . (D is c h a r g e ga s , s u c t io n ga s a n d l iq u id s id e ) F L o w - p r e s s u r e p r o t e c t iv e A ll s t o p L o w - p r e s s u r e P s de t e c t e d o pe r a t io n lo w e r t h a n • C he c k fu ll o pe n in g o f s e r v ic e v a lv e . • C he c k o u td o o r u n it P . C . bo a r d ( I /F ) e r r o r . m i s w i r i n g • C h e c k c h a r a c t e r i s t i c s o f T D 1 s e n s o r r e s i s t a n c e v a l u e . t e m p . s e n s o r (T D 1 ) t e m p . (T D 1 ) d o e s n o t r i s e u p . • C h e c k c o n n e c t i o n a n d w i r i n g o f T D 1 s e n s o r c o n n e c t o r . F O u t d o o r u n it d is c h a r ge A ll s t o p W h i le c o m p r e s s o r 1 is o p e r a t in g , t he d is c ha r ge • C he c k m o u n t in g o f TD 1 s e n s o r . • C he c k r e fr ig e r a n t s ho r ta g e . • C he c k 4 - w a y v a lv e e r r o r . • C he c k v a lv e o pe n s ta tu s o f in do o r PM V. • C h e c k m is c a b li n g /m is in s ta lla t io n o f S V 41 a n d SV 4 2. • C he c k S V 41 c ir c u it le a ka g e . • C h e c k o u td o o r PM V c lo gg in g . (P M V 1 , 2) t h e r m o o p e r a t i o n p r o t e c t i v e o p e r a t i o n . • C h e c k f u l l o p e n i n g o f s e r v i c e v a l v e . (G a s a n d l i q u i d s i d e ) F C o m p r e s s o r 1 c a s e A ll s to p C o m p r e s s o r 1 c a s e th e r m o s ta t pe r fo r m e d • C he c k c o m p r e s s o r 1 c a s e th e r m o c ir c u it . (C o n n e c to r , c a b le , P . C . bo a r d) i c t i t o e n d C h e c k c o d e n a m e S t a t u s E r r o r d e t e c t i o n c o n d i t i o n C h e c k i t e m ( p o s i t i o n )

lin I /F D ce In do o r D m te I /F O c i I /F O m te I /F O po s it io n D e te c te d

r e fr ig e r a n t p ip e s ys te m . e a dd r e s s a ga in s t th e o u td o o r u n it in d if fe r e n t u p lic a te d o u td o o r A ll s to p L in e a d d r e s s s e tu p is du p lic a te d n te r u n i ts u n it o n ly s to p s . g r o u p. u p lic a t e d in d o o r C o r r e s p o n d in g T he r e a r e m u lt ip le c e n t e r u n it s in a is w ir in g n o t r is e u p. m p . s e n s o r (T D 3) t h e d i s c h a r g e t e m p . (T D 3 ) do e s u t do o r u n it d is c ha r ge A ll s t o p W h i le c o m p r e s s o r 2 is o pe r a t in g, w it h in th e s pe c if ie d r a n g e . c ha n ge d fo r a c o n s ta n t t im e o n ly d if fe r e n c e fr o m o th e r TK s e n s o r s o r s ta r te d th e o pe r a t io n , o r th e n o t be de te c te d th o u gh c o m p r e s Te m pe r a tu r e c ha n ge o f TK 5 c o u ld w it h in th e s pe c if ie d r a n g e . c ha n ge d fo r a c o n s ta n t t im e o n ly d if fe r e n c e fr o m o th e r TK s e n s o r s ta r te d th e o pe r a t io n , o r th e n o t be de te c te d th o u g h c o m p r e s s o r Te m pe r a tu r e c ha n ge o f TK 4 c o u ld s ta r te d th e o p e r a t io n . n o t be de te c te d th o u g h c o m p r e s s o r Te m pe r a tu r e c ha n ge o f TK 3 c o u ld 2 s ta r te d th e o pe r a t io n . n o t be de te c te d th o u g h c o m p r e s s o r Te m pe r a tu r e c ha n ge o f TK 2 c o u ld o p e r a t io n . c o m p r e s s o r 1 s ta r te d th e r c u it s ys te m e r r o r n o t be de te c te d th o u gh il le v e l d e te c t iv e A ll s to p Te m pe r a tu r e c ha n ge o f TK 1 c o u ld is w ir in g n o t r is e u p. m p . s e n s o r (T D 2) th e d is c ha r g e te m p . (T D 2 ) do e s u td o o r u n it d is c ha r ge A ll s to p W h ile c o m p r e s s o r 2 is o pe r a t in g, C h e c k c o d e n a m e S ta tu s E r r o r d e te c t io n c o n d it io n • C he c k lin e a d d r e s s . (G r o u p / in d iv id u a l) a fte r in d o o r a dd r e s s s e tu p. • C h e c k th e c h a n ge o f r e m o te c o n tr o lle r c o n n e c t io n • C he c k in do o r a dd r e s s . • C he c k o u td o o r u n it P . C . bo a r d ( I /F ) e r r o r . • C he c k c h a r a c te r is t ic s o f TD 3 s e n s o r r e s is ta n c e v a lu e . • C he c k c o n n e c t io n a n d w ir in g o f TD 3 s e n s o r c o n n e c to r . • C he c k m o u n t in g o f TD 3 s e n s o r . • C h e c k r e fr ig e r a n t s ta gn a t io n in c o m p r e s s o r . • C he c k c a p illa r y c lo gg in g o f o il- e q u a l iz a t io n c ir c u it a n d c he c k v a lv e o p e r a t io n e r r o r . • C h e c k SV 3E v a lv e o p e r a t io n e r r o r . • C he c k TK 1 , TK 2 , TK 3 , TK 4 a n d TK 5 m is c o n n e c t io n . • C he c k c ha r a c te r is t ic s o f TK 5 s e n s o r r e s is ta n c e v a lu e . • C he c k TK 5 s e n s o r c o m in g - o f f. • C h e c k r e fr ig e r a n t s ta g n a t io n in c o m p r e s s o r s he l l. • C h e c k c a p illa r y c lo gg in g o f o il- e qu a liz a t io n c ir c u it a n d c he c k v a lv e o pe r a t io n . • C he c k SV 3E , S V 3F v a lv e o pe r a t io n . • C he c k TK 1 , TK 2 , TK 3 , TK 4 a n d TK 5 m is c o n n e c t io n . • C he c k c ha r a c te r is t ic s o f TK 4 s e n s o r r e s is ta n c e v a lu e . • C he c k TK 4 s e n s o r c o m in g - o f f. • C h e c k r e fr ig e r a n t s ta g n a t io n in c o m p r e s s o r s he l l. • C h e c k c a p illa r y c lo gg in g o f o il- e qu a liz a t io n c ir c u it a n d c he c k v a lv e o pe r a t io n . • C he c k SV 3E , SV 3F v a lv e o pe r a t io n . • C he c k TK 1 , TK 2 , TK 3 , TK 4 a n d TK 5 m is c o n n e c t io n . • C he c k c ha r a c te r is t ic s o f TK 3 s e n s o r r e s is ta n c e v a lu e . • C he c k TK 3 s e n s o r c o m in g - o f f. • C h e c k r e fr ig e r a n t s ta g n a t io n in c o m p r e s s o r s he l l. • C he c k c a p il la r y c lo gg in g o f o il e qu a liz a t io n c ir c u it a n d c he c k s to p v a lv e o p e r a t io n . • C he c k SV 3E , SV 3F v a lv e o pe r a t io n . • C he c k TK 1 , TK 2 , TK 3 , TK 4 a n d TK 5 m is c o n n e c t io n . • C he c k c ha r a c te r is t ic s o f TK 2 s e n s o r r e s is ta n c e v a lu e . • C he c k TK 2 s e n s o r c o m in g - o f f. • C h e c k r e fr ig e r a n t s ta gn a t io n in c o m p r e s s o r . • C h e c k c a p illa r y c lo gg in g o f o il- e q u a t io n c ir c u it a n d o pe r a t io n e r r o r o f s to p v a lv e . • C he c k o p e r a t io n e r r o r o f SV 3E , SV 3F v a lv e . • C he c k TK 1 , TK 2 , TK 3 , TK 4 a n d TK 5 m is c o n n e c t io n . • C he c k c ha r a c te r is t ic s o f TK 1 s e n s o r r e s is ta n c e v a lu e . • C he c k TK 1 s e n s o r c o m in g - o f f. • C he c k o u td o o r u n it P . C . bo a r d ( I /F ) e r r o r . • C he c k c h a r a c te r is t ic s o f TD 2 s e n s o r r e s is ta n c e v a lu e . • C he c k c o n n e c t io n a n d w ir in g o f TD 2 s e n s o r c o n n e c to r . • C he c k m o u n t in g o f TD 2 s e n s o r . C h e c k it e m (p o s it io n ) I /F E x te n de d In do o r In te r lo c k i 3 IP DU DU F AN I /F IP DU qu a u n i ts I /F Q u a n t it y o In do o r TC C - L in k D u p lic a te I /F O u td o o r c In do o r In do o r c a In do o r In do o r g r o In do o r G r o u p lin e in do o r u n (D is p la ye d I /F D u p lic a te (D is p la ye d I /F D u p lic a te po s it io n D e te c te d c o n t in u e s . I C ( I n t e g r a t e d C i r c u i t ) e r r o r O pe r a t i o n P . C . bo a r d ( I /F ) p a r t s e r r o r C h e c k i n do o r ( I /F ) P . C . bo a r d. 1 ) C he c k in do o r P . C . bo a r d e r r o r . O u ts id e d e v ic e is n o t c o n n e c te d to c o n n e c to r (C N 8 0 ): m o r e 1 m i n u t e 2 ) C h e c k i n d o o r P . C . b o a r d e r r o r . u n i t o n l y s t o p s . D e t e c t e d s i g n a l t o (C N 8 0 ) f o r 1 ) C h e c k o u t s i d e d e v i c e e r r o r . n i n do o r u n i t fr o m o u t s i de C o r r e s p o n d i n g • O u t s i d e e r r o r i n p u t t e r m i n a l O u t s i d e d e v i c e i s c o n n e c t e d t o c o n n e c t o r (C N 80 ): U AR T : U n iv e r s a l A s yn c h r o n o u s R e c e iv e r T r a n s m it te r N o t e ) w e r e l e s s . • C h e c k C o m p . I P D U , f a n I P D U , a n d I / F P . C . b o a r d e r r o r . w he n p o w e r w a s tu r n e d o n • C he c k c o n n e c t io n o f U AR T c o m m u n ic a t io n c o n n e c to r . n t it y e r r o r A ll s t o p N o . o f IP DU u n it s de t e c t e d • C he c k m o de l s e t u p fo r o u t do o r I/ F s e r v ic e P . C . bo a r d. • C h e c k o u td o o r P . C . bo a r d ( I/F ) e r r o r . • C he c k c o m m u n ic a t io n lin e be tw e e n o u td o o r u n it s . o u td o o r u n it s . (M a x . 4 u n it s pe r 1 s ys te m ) v e r o f c o n n e c te d o u td o o r A ll s to p T he r e w e r e m o r e th a n fo u r • C he c k N o . o f c o n n e c te d o u td o o r u n it s . ( In c a s e o f TC C - L in k) a d d r e s s e s • C h e c k n e t w o r k a d a p t o r P . C . b o a r d . d c e n tr a l c o n tr o l a dd r e s s e s A ll s to p D u p lic a te d c e n tr a l c o n tr o l • C h e c k c e n tr a l c o n tr o l a dd r e s s . a c c o r d in g to th e m o de l. s e r v ic e , ju m pe r li n e w a s n o t c u t s e r v ic e . a pa c it y u n s e t A ll s to p O n th e I/ F P . C . bo a r d fo r C he c k m o de l s e tu p o n o u td o o r I/F P . C . bo a r d A ’ s s y fo r u n it o n ly s to p s . p a c it y u n s e t C o r r e s p o n d in g In do o r u n it c a pa c it y w a s u n s e t. S e t u p in do o r c a pa c it y . (D N = 1 1) is f ir s t ly tu r n e d o n . A fte r in s ta ll a t io n , th is c o d e is d is p la ye d w h e n th e p o w e r u n i t o n l y s t o p s . N o t e ) u p / a dd r e s s u n s e t C o r r e s p o n d in g A dd r e s s w a s n o t ye t s e t u p. • C h e c k in d o o r a dd r e s s . th e in d iv id u a l in do o r u n it s . u n it o n ly s to p s . c o n n e c te d to a g r o u p e x is te d in in in d iv id u a l in do o r u n i t. C o r r e s p o n d in g A t le a s t o n e in d o o r u n it • C h e c k in d o o r a dd r e s s . it w it h p r io r it y) o n th e u n it o th e r th a n du p l ic a te d. u n i t. d in do o r u n it s w it h p r io r i ty A ll s to p In do o r u n it s w it h p r io r it y w e r e • C he c k d is p la y o f in do o r u n it w it h p r io r it y a n d o u td o o r o n in do o r u n it w it h p r io r it y) du p l ic a te d. d in do o r u n it s w it h p r io r i ty A ll s to p In do o r u n it s w it h p r io r it y w e r e • C he c k d is p la y o f in do o r u n it w it h p r io r it y. C h e c k c o d e n a m e S t a t u s E r r o r d e t e c t io n c o n d it io n C h e c k it e m (p o s it io n )

r In do o r In do o H e a t e rro r In v e r s e qu O pe n SW A c tu a D is c h r In do o n ed

• u n it o n ly s to p s . r fa n m o to r e r r o r C o r r e s p o n d in g • • r o v e r f lo w e r r o r A ll s to p • ov s in k o v e r h e a t e r r o r A ll s to p IG (C o m p r e s s o r ) te r DC v o lt a ge (V d c ) • e n c e de te c t io n ph a s e s h o r ta ge /p ha s e A ll s to p • t io n o f h ig h - p r e s s u r e A ll s to p H a r ge te m p TD 1 e r r o r A ll s to p D u n it o n ly s to p s . r fa n m o to r e r r o r C o r r e s p o n d in g C h e c k c o d e n a m e S ta tu s O v e r - c u r r e n t p r o t e c t i o n o p e r a t e d . • C h e c k i n f l u e n c e o f o u t s i d e a i r c o n t r o l . c e r t a i n t i m e . • C h e c k i n d o o r P . C . b o a r d e r r o r . fr o m ta r ge t v a lu e w a s de te c te d fo r • C he c k fa n m o to r e r r o r . T h e v a lu e o f m o t o r s pe e d d e v ia t e d • C he c k c o n n e c t io n o f fa n c o n n e c t o r a n d w ir in g. • C he c k in do o r P . C . bo a r d e r r o r . • C he c k c lo g g in g o f d r a in p ip e . t h e c o n n e c t o r c a m e o f f . • C h e c k t h e d r a i n p u m p c i r c u i t . F lo a t s w it c h c ir c u it d is c o n n e c te d o r • C he c k o p e r a t io n o f d r a in p u m p u n i t. F lo a t s w it c h o pe r a te d. • C he c k th e f lo a t s w it c h c o n n e c to r . • C he c k IP D U e r r o r . ( IG B T bu il t- in te m p s e n s o r (T H ) e r r o r ). (C he c k s c r e w in g a n d c o n ta c t . ) • C he c k f ix a t io n be tw e e n IG B T a n d he a t s in k. • C he c k c lo g g in g o f he a t s in k c o o lin g d u c t. e r h e a t e d . • C h e c k o u t d o o r f a n s y s t e m e r r o r . B T bu ilt - in te m p s e n s o r (T H ) w a s • C he c k po w e r v o lt a g e . d e te c te d in in v e r te r DC v o lt a ge O v e r v o lt a ge /V o lt s ho r ta ge w a s p o w e r tu r n e d o n . O pe n ph a s e w a s de te c te d w he n th e • C he c k o u td o o r P . C . bo a r d ( I/F ) e r r o r . • C he c k r e fr ig e r a n t o v e r c ha r g e . • C h e c k SV 5 v a lv e c ir c u i t. • C h e c k SV 4 v a lv e c ir c u i t. • C he c k o pe r a t io n e r r o r o f c he c k v a lv e o f d is c ha r ge p ip e . • C he c k m is w ir in g o f c o m m u n ic a t io n l in e be tw e e n in do o r a n d o u td o o r . • C he c k o pe n in g o f in do o r PM V. • C he c k in do o r fa n s ys te m e r r o r . (C a u s e o f a ir v o lu m e de c r e a s e ) • C he c k o u td o o r P . C . b o a r d ( I/ F ) e r r o r . • C he c k c lo g g in g o f S V 2 c ir c u i t. • C he c k s ho r t- c ir c u it in g o f o u td o o r s u c t io n /d is c h a r ge a i r . • C h e c k c lo gg in g o f in do o r /o u td o o r he a t e x c ha n ge r s . • C he c k c lo gg in g o f o u td o o r PM V . (P M V 1 , 2) • C he c k o u td o o r fa n m o to r e r r o r . • C he c k o u td o o r fa n e r r o r . • C he c k fu ll o pe n in g o f o u td o o r s e r v ic e v a lv e s (G a s s id e , L iq u id s id e ). • C h e c k P d p r e s s u r e s e n s o r e r r o r . ig h - p r e s s u r e SW a c tu a te d. • C he c k c o n n e c t io n o f h ig h - p r e s s u r e SW c o n n e c to r . • C h e c k SV 4 c ir c u it . (M is w ir in g a n d m is in s ta lla t io n o f S V 41 , SV 42 a n d S V 4 3) • C h e c k le a ka g e o f S V 4 c ir c u i t. • C he c k 4 - w a y v a lv e e r r o r . • C he c k r e fr ig e r a n t s ho r ta g e . • C he c k c ha r a c te r is t ic s o f TD 1 s e n s o r r e s is ta n c e v a lu e . • C he c k c lo gg in g o f o u td o o r PM V . (P M V 1 , 2 , 4) is c h a r ge te m p (T D 1 ) e x c e e de d 115 ° C. • C he c k fu ll o pe n in g o f o u td o o r s e r v ic e v a lv e s (G a s s id e , L iq u id s id e ). • C h e c k c a b li n g. • C h e c k th e lo c k o f fa n m o to r (A C fa n ). E r r o r d e t e c t io n c o n d it io n C h e c k it e m (p o s it io n )


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