TOSHIBA MMF-AP0156H-E (01) PDF MANUAL


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PDF Content Summary: FILE NO. A10-1420 SERVICE MANUAL AIR-CONDITIONER (MULTI TYPE) INDOOR UNIT <Floor Standing Type> MMF-AP0156H-E (TR) MMF-AP0186H-E (TR) MMF-AP0246H-E (TR) MMF-AP0276H-E (TR) MMF-AP0366H-E (TR) MMF-AP0486H-E (TR) MMF-AP0566H-E (TR)

R410A PRINTED IN JAPAN, Jan., 2015 ToMo

CONTENTS PRECAUTIONS FOR SAFETY .................................................................................... 6 1. SPECIFICATIONS .................................................................................................. 13 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) .................................................... 14 2-1. MMF-AP0156H-E (TR), AP0186H-E (TR)........................................................................... 14 2-2. MMF-AP0246H-E(TR), AP0276H-E (TR)............................................................................ 15 2-3. MMF-AP0366H-E (TR), AP0486H-E (TR), MMF-AP0566H-E (TR) .................................... 16 3. WIRING DIAGRAMS .............................................................................................. 17 4. PARTS RATING...................................................................................................... 18 5. REFRIGERANT CYCLE DIAGRAM ....................................................................... 19 6. CONTROL OUTLINE.............................................................................................. 20 7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) ................................................................................................. 26 7-1. Indoor controller block diagram....................................................................................... 26 7-1-1. In Case of Connection of Wired (Simple) Remote Controller .............................. 26 7-1-2. In Case of Connection of Wireless Remote Controller ........................................ 27 7-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller .................................................................................................................. 28 7-2. Indoor Print Circuit Board................................................................................................. 29 7-3. Optional connector specifications of indoor P.C. board ............................................... 30 7-4. Test operation of indoor unit ............................................................................................ 31 7-5. Method to set indoor unit function DN code................................................................... 32 7-6. Applied control of indoor unit .......................................................................................... 35 8. TROUBLESHOOTING ............................................................................................ 51 8-1. Overview ............................................................................................................................. 51 8-2. Troubleshooting method ................................................................................................... 52 8-3. Troubleshooting based on information displayed on remote controller ..................... 58 8-4. Check codes displayed on remote controller and SMMS outdoor unit (7-segment display on I/F board) and locations to be checked ........................................................ 63 8-5. Diagnostic Procedure for Each Check Code (Indoor Unit) ............................................ 78 8-6. Sensor characteristics ...................................................................................................... 79 9. P.C. BOARD EXCHANGE PROCEDURES ............................................................ 81 9-1. Replacement of indoor P.C. boards ................................................................................. 81 10. DETACHMENTS................................................................................................... 86 11. EXPLODED VIEWS AND PARTS LIST ............................................................... 91 – 2 – Original instruction 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. 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

Qualified installer Qualified service person 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 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.

– 3 – 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 All types of work Protective gloves ‘Safety’ working clothing Protective gear worn Electrical-related work Work done at heights (50 cm or more) Transportation of heavy objects Repair of outdoor unit Gloves to provide protection for electricians Insulating shoes Clothing to provide protection from electric shock Helmets for use in industry Shoes with additional protective toe cap Gloves to provide protection for electricians

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 CAUTION 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. 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] Indication 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. – 4 – 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 WARNING

ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing. ELECTRICAL SHOCK HAZARD Disconnect all remote electric power supplies before servicing.

WARNING WARNING

Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing. Moving parts. Do not operate unit with grille removed. Stop the unit before the servicing.

CAUTION CAUTION

Do not touch the aluminium fins of the unit. Doing so may result in injury. Do not touch the aluminium fins of the unit. Doing so may result in injury.

– 5 – PRECAUTIONS FOR SAFETY The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual. 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 electrical box cover 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 opening the electric cover set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in injury through contact with the rotation parts. Only a qualified installer (*1) or qualified service person (*1) is allowed to remove the suction board

Turn off braeaker Electric shock hazard Prohibition Stay on protection cover 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. 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 electric cover 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. When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or service panel of Outdoor Unit inevitably to determine the failure, use gloves to provide protection for electricians, insulating shoes, clothing to provide protection from electric shock and insulating tools. Be careful not to touch the live part. Electric shock may result. Only “Qualified service person” is allowed to do this work. 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. When checking the electric parts, removing the cover of the electric parts box of Indoor Unit and/or front panel of Outdoor Unit inevitably to determine the failure, put a sign “Do not enter” around the site before the work. Failure to do this may result in third person getting electric shock. Before operating the air conditioner after having completed the work, check that the electrical parts box cover 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.

– 6 – WARNIG 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. Do not use any refrigerant different 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. 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. When the air conditioner is to be transported, installed, maintained, repaired or removed, wear protective gloves and ‘safety’ work clothing. To connect the electrical wires, repair the electrical parts or undertake other electrical jobs, wear gloves to provide protection for electricians, 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. Use wiring that meets the specifications in the Installation Manual and the stipulations in the local regulations and laws. Use of wiring which does not meet the specifications may give rise to electric shocks, electrical leakage, smoking and/or a fire.

General Check earth wires. 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 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. Before 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. While carrying out the work, wear a helmet for protection from falling objects. 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 outdoor 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. Use forklift to carry in the air conditioner units and use winch or hoist at installation of them. When transporting the air conditioner, wear shoes with protective toe caps, protective gloves and other protective clothing. When transporting the air conditioner, do not take hold of the bands around the packing carton. You may injure yourself if the bands should break. Be sure that a heavy unit (10 kg or heavier) such as a compressor is carried by four persons. 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 electric engineer for rework. After completing the repair or relocation work, check that the ground wires are connected properly. 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.

– 7 –

Prohibition of modification. Use specified parts. Do not bring a child close to the equipment. Insulating measures No fire Refrigerant 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. 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 watercut 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. Do not use any refrigerant different 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. 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 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.

– 8 –

Assembly / Wiring Insulator check Ventilation Compulsion Check after repair Do not operate the unit with the valve closed. Check after reinstallation 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 (500 V Megger) to check the resistance is 1 MΩ 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. If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may generate. After installation 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. 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.

– 9 –

Cooling check Installation 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 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. Only a qualified installer or service person is allowed to do installation work. Inappropriate installation may result in water leakage, electric shock or fire. 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 expire 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” – 10 – Declaration of Conformity Manufacturer: Toshiba Carrier Corporation 336 Tadehara, Fuji-shi, Shizuoka-ken 416-8521 JAPAN Authorized Representative / Nick Ball TCF holder: 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: Air Conditioner Model / type: Indoor unit <Floor Standing Type> MMF-AP0156H-E MMF-AP0156H-TR MMF-AP0186H-E MMF-AP0186H-TR MMF-AP0246H-E MMF-AP0246H-TR MMF-AP0276H-E MMF-AP0276H-TR MMF-AP0366H-E MMF-AP0366H-TR MMF-AP0486H-E MMF-AP0486H-TR MMF-AP0566H-E MMF-AP0566H-TR Commercial name: 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 NOTE This declaration becomes invalid if technical or operational modifications are introduced without the manufacturer’s consent. – 11 – Specifications Model Sound presser level (dBA) Weight (kg) Cooling Heating

MMF-AP0156H-E MMF-AP0186H-E MMF-AP0246H-E MMF-AP0276H-E MMF-AP0366H-E MMF-AP0486H-E MMF-AP0566H-E MMF-AP0156H-TR MMF-AP0186H-TR MMF-AP0246H-TR MMF-AP0276H-TR MMF-AP0366H-TR MMF-AP0486H-TR MMF-AP0566H-TR ∗: Under 70 dBA Weight centre and weight ∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗∗46 46 47 47 62 62 62 46 46 47 47 62 62 62 (Unit: mm)

Model name X(mm) Y(mm) Z(mm) Total weight (kg)

MMF-AP0156H-∗ MMF-AP0186H-∗ MMF-AP0246H-∗ MMF-AP0276H-∗ MMF-AP0366H-∗ 90 290 830 46 47

MMF-AP0486H-∗ MMF-AP0566H-∗ 180 295 860 62 Y X G Z

– 12 –

1. SPECIFICATIONS Floor Standing Type Model name MMF-AP 0156H -E(TR) 0186H -E(TR) 0246H -E(TR) 0276H -E(TR) 0366H -E(TR) 0486H -E(TR) 50Hz/60Hz 0566H -E(TR)

Cooling Capacity 䋨*1䋩 kW 4.5 5.6 7.1 8.0 11.2 14.0 16.0 Heating Capacity 䋨*1䋩 kW 5.0 6.3 8.0 9.0 12.5 16.0 18.0 Electrical Power supply 1phase 50Hz 230V(220V-240V) /1phase 60Hz 220V charastaristics (Separate power supply for indoor units is required.)

Running current Power consumption A 0.38 / 0.40 0.60 / 0.63 0.90 / 0.94 1.10 / 1.15 kW 0.055 0.089 0.135 0.160

Starting current 0.84 / 0.88 A 0.53 / 0.56 1.26 / 1.32 1.54 / 1.61 Appearance Silkey Shade (Munsell/ 1Y 8.5/8.0) Outer Height mm 1750 dimension Width mm 600 Depth mm 210 390 46 Weight kg 47 62 Heat exchanger Finned tube Fan Centrifugal fan Air filter Standard filter (Simple filter)

Air Flow (H/M/L) m3/h 900 (780 / 660) 1200 (990 / 840) 1920 (1620 /1380) 2160 (1730 /1560)

Controller Remote Controller

Connecting Gas side mm pipe Liquid side mm Ø12.7 Ø12.7 Ø6.4 Ø9.5

Drain port diameter mm 20 (One side of male screw) Sound Pressure Level (H/M/L) dB 46 / 42 / 37 49 / 45 / 39 51 / 46 / 41 54 / 49 / 44 64 / 60 / 55 67 / 63 / 57 72 / 67 / 62 Sound Power Level (H/M/L) dB 69 / 64 / 59 䋨*1䋩Cooling / heating capacity is based on single connection operation with standard piping length under Japanese Industrial Standard B 8615 Condition 1. – 13 – 2. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 2-1. MMF-AP0156H-E (TR), AP0186H-E (TR) ) g n i p i p g e )

n i c i v r e s d n a n o it a ll a ts n i r o f ) g n i pi p e di s th gi r f 0 0 5 n a ht Wall Front More than 200 Wall r o o lF ) , n o , i t e i t . s g n i pi p e di s r e w o l r o f e l o h fo 42 88 l l a W 105 L C 50 0 2 1 e r a u q s ( 0 2 1 x 0 5 2 9 1 c a f r u s r e d n u r o F ( 0 4 6 e l o h r e w o l- ) t t l l o o b b r w o e r h c c n S A 8 8 M M r o r

de o e t a l ti n o s 4 F o

r iu qe es a c r o M n o r F 1000 p n o it a l u e ht r p n o it a l li a te 4 . ( 7 . 2

r e c a pS g n i pi p e di s kc a b r o n I( More than 1730 b In case of 1770 a In case of 0 2 1 120 ) t t l l e o l o b o b h r w r o e r e h y c . c w b S n t u o k c o n k 0 3 1 L C ) g n i pi p e di s kc a b r o F( l a ts n i n o s d n i k o w t f o s e lo h y n a m e r a e o f x i f o t s i r e ht o e ht d n a ll a w r o f x if o t s l a ts n i e ht d n a s e lo h ts e b e ht e s o o h c e s . yl t h gi t ll a ts n i D n o i t i s o p g n i p i p t n a r 5 3 1 358 5 51 6 t n i o j g n i pi p tn a r e gi r fe R 1 8 1 ) e di s di u qi L( 1 t n i o j g n i pi p tn a r e gi r fe R ) e di s s a G(

f e lo o l- 2 8 M A 8 l l a ts e t a l e t a l p r e hT i e n o a e l P d n a e gi r f 4 61

h ro M r n i p n e 20 l l ( e 341

f o F o os o it ht f a R ) e

s li a te D ( l a n a c u o Yb a ll a ts n i e ht o g n i s r e v e r . W l l a t l o b e h t fo . e t a r a p di s ht o B (t r o p g ) e l

l l a W ) e c n a t s i d l g l n i a l l w a t s m n o i r f f o m e m s 0 a c 5 n s i I (92 88 42 105 t r o p g n i pi p t n a r n e gi r f e r r e w o L ) e l o h t u o k c o n k 0 2 1 x 0 5 ( 0 1 e b n a c ti n Ua m m 0 5 d e ll a ts n i l l a w m o r f t r a p a 0 1 2 20 W l l a W l o r t n o C 0 5 r e v o c e z i s d a e h e hT e s dl u o h s x if o t 1750 n i pi p tn a r e gi r fe R o h t u o kc o n k 08 ( 157 132 165 120 0 5 e s o h n i a r D 0 2 7 0 1 0 8 0 02 ) e di s kc a B( e lo h g n i pi p t n a r e gi r fe R ) e lo h t u o kc o n k 03 1 ( ) e di s m o tt o B( e l o h g n i pi p tn ) e lo h tu o kc o n

0 0 3 80 2 9 1 0 4 6 0 1 0 06 e t a l p n o it a ll a ts n I 3 x 03 3 x 03 t r o p e gr a hc s iD k 1 a r 1 0 e 2 g i 1 r 0 f x 8 e 0 5 R ( t r 40 25 210 815 631 59 10 o e p t n a l o i p t ) c n u e o i d t S i a s l l h a t t s o n B I (

– 14 –

2-2. MMF-AP0246H-E(TR), AP0276H-E (TR) g n i c i g v n r i e p i s Wall p d e n ) d a i g Front r s 42 88 50 ) e r a u q s ( 02 1x ) g n i pi p e c a fr u s r e dn u r )

n o it a ll a ts n i r o f de n i pi p e di s th gi r fo 0 0 5 n a ht More than 200 Wall o o lF ) , n o , i t e i t . s t a i l o n p p u r e w o l r o f e lo h fo l l a W L C 105 0 21 0 5 2 9 1 o F ( 0 4 6 e l o h r e w o l- 4 t l o b w e r c S 8 M r o F t l o b r o hc n A 8 M r o

r iu q e r es a c e r o M t n o r F 1000 n o it a ll a t e h t r o f n o it a ll a t s li a te 5 . 9 ( 9 . 5 1

e c a p S g n i p i p e d n I( More than 1730 b In case of 1770 a In case of 0 2 1 t u o kc o n k 03 1 ) g n i pi p e di s kc a b r o F( s n i n o s d n i k o w t f o s e lo h y x i f o t s i r e ht o e h t dn a ll a w s n i e h t d n a s e l o h ts e b e ht . yl D n o i ti s o p g 5 3 1 358 5 51 t n i o j g n i pi p t n a r e gi r fe ) e di s di u qi L( t n i o j g n i pi p tn a r e gi r fe R ) e di s s a G(

i s kc a b r o f e l o h r e ) t t l l o o b b r w o e r h 120 y b . e L C na m er a er e r o f x i f o t s i e e s o o h c e s a e th gi t ll a ts n i d n i pi p tn a r e 4 R 1 81

e lo w o l- c S 8 c n A l l a ts e t a l t a l p 20 hT no lP na gi r fe 61

h 2 M 8 n i p n e (l R 341

f o s li r o F M r o o s l a o it a ll ht f o g la W ) e di s

a te D ( n a c u o Yb a ts n i e ht n i s r e v e r . l l t l o b e ht fo . e t a r a p ht o B (t r o p g ) e l

l l a W ) e c n a t s i d l g l n i a l l w a t s m n o i r f f o m e m s 0 a c 5 n s i I (92 88 42 105 t r o p g n i pi p tn a r n e gi r f e r r e w o L ) e l o h t u o k c o n k 0 2 1 x 0 5 ( 0 1 e b n a c ti n Ua m m 0 5 d e ll a ts n i l l a w m o r f t r a p a 0 1 2 20 a W l l a W l o r t n o C 0 5 r e v o c e z i s da e h e hT e s dl u o h s x i f o t 1750 n i pi p t n a r e gi r fe R o h tu o kc o n k 0 8 ( 157 132 165 120 0 5 e s o h n i a r D 0 2 7 0 1 0 0 02 ) e di s kc a B( e lo h g n i pi p t n a r e gi r fe R ) e l o h t u o kc o n k 0 3 1 ( ) e di s m o tt o B( e l o h g n i pi p tn ) e lo h t u o kc o n

0 0 3 80 2 9 1 0 46 0 1 0 0 6 e t a l p n o it a ll a ts n I 3 x 03 3 x 03 t r o p e gr a hc s iD 8 k 1 a r 1 0 e 2 g i 1 r 0 f x 8 e 0 5 R ( t r 40 25 210 815 631 59 10 o e p t n a l o i p t ) c n u e o i d t S i a s l l h a t t o s n B I (

– 15 – 2-3. MMF-AP0366H-E (TR), AP0486H-E (TR), MMF-AP0566H-E (TR) ) g n i p i p g e n c i ) g

c i v r e s dn a n o it a ll a ts n i r ) g n i pi p e di s th Wall Front More than 200 Wall n 0 a 0 h 5 t e r t r o o l F ) , n o , i t e i t . s n i pi p e di s r e w o l r o f e lo 52 258 50 l l 0 a 2 1 W e r a u q s ( 0 2 1 x 0 5 2 9 a f r u s r e d n u r o F ( e l o h r ) t t l l o o b b r w o e h r c c n S A 8 8

o f d e r gi r f o n o r F o M 1000 a l p n o it ti n u e h o p n o it h f o s L C 195 1 0 46 e w o l- 4 M r o F M r o iu q e r e c a pS g n i pi p e e s a c n I( More than 1730 b In case of 1770 a In case of 0 2 1 t u o kc o n k 031 ) g n i pi p e di s kc a b r o F( a ll a ts n i n o s d n i k o w t f o s e lo h y t r o f x i f o t s i r e ht o e ht dn a ll a w r a ll a ts n i e h t dn a s e lo h ts e b e ht . yl t li a te D n o i ti s o p g n i pi d i u e di s s a Ge 0 0 2 308 5 . 9 t n i o j g n i pi p t n a r e gi r f ( 9 . 5 1 t n i o j g n i p i p ) t e n d a i r s e d g i i r u f q e i ) e di s s a G

di s kc a e l o ) t 120 L C na m er a o f x if o t e s o o h c e h gi t ll a ts p tn a r e qi L di s e R 5 L( R (

b r h r lo b t l o y b . e er e s i e sa n i d gi r 12

o f e e w o l w er b r o l l a ts e t a l t a l p hT no e l P na fe R 5 6 ) e

lo - 2 c hc n i p n e 20 (l ) 1 290 di h f o s li a t S 8 M r o F n A 8 M r o o s l a n a c u o it a ll a ts n i ht f o g n i s r e la W t l o b . e di s ht o B( s ht o b (t r o p ) e l e D ( o Yb e h t m m v e r . ll a w l l a e ht f o e z is e t a r a p e s dl tr o p g n i pi p ) e l o h t u o t e lt u o e s o o h t u o kc o n

l l a W 0 ) e c n a t s i d l g l n i a l l w a t s m n o i r f f o m e s m a 0 c 5 n s i I (102 258 52 195 2 9 1 t r o p g n i pi p tn a r n e gi r f e r r e w o L ) e l o h t u o k c o n k 0 2 1 x 0 5 ( 0 1 0 e b n a c t i n U a 0 0 5 d e ll a ts n i m o r f tr a pa 0 9 3 3 x 03 20 W l l a W 0 5 l o r r t e n v o o c C da e h e hT u o h s x if o t t n a r e g i r f e R 1750 kc o n k 0 8 ( 0 5 160 120 165 120 h n i a r D 0 4 e s o h n i a r D 0 2 1 k 0 4 ( 5 2 1 0 8 1 0 8 3 ) e di s kc a B( e lo h g n i pi p tn a r e gi r fe R ) e l o h t u o kc o n k 0 31 ( ) e di s m o tt o B( e l o h g n i pi p tn a r e gi r f ) e lo h t u o kc o n k 0 2 1x

0 3 80 46 0 1 06 e t a l 0 8 3 x 0 3 t r o e 0 5 R ( t 40 25 210 815 631 59 10 r o p e t n a l o i

p n o it a ll a ts n I p e gr a h c s iD p n o it a ll a ts n I ) e di s ht o B( tc u S

– 16 – 3. WIRING DIAGRAMS r e o v s k l r r n c e a

A T
t J C T
t 2 C T
t 1 C T
t V MP M 65 m a N st r aP r o tc e n n o C e s u F r o to M n a F r o tc a e R ot o M r ev u oL V r ot o M e sl u P e s p m e t r o o d n I ol B la n i m r eT o s n e s p m e T

1 4 0 1 N C 3 1 2 ) L E Y ( 4 3 N C 1 2 0 1 N C ) D E R ( 2 ) DE R( 1 1 01 NC 2 ) K L B ( 1 0 01 NC 3 ) W R B ( 1 23456 ) 2 U 8 L N B ( C ) ) P K S I H 1 2345 ) 1 K 8 L N B ( C ) D 5 E 4 R ( l o b m y S T R * * NC 1 0 F M L F M L V MP A T 2 0, 10 BT J C T, 2, 1 CT

2 1 0 29 18 17 16 15 14 4 0 5 N C ) I ) I H W( d r a o t i n ) C( 1 7 NC D( 2 7 NC 1 25 NC ) UL B( 0 2 NC 3 2 1 5 4 3 2 1 AU L R GE . s e ir o s s e c c a . dr a o b . C.

13 12 11 10 19 8 H W( 0 15 NC B . C. P U r oo 3 46 1- C V 02 CD V 51 CD V 21 CD V 7 CD 2 3 NC ) I H W () 2 1 VI R D N AF . e ti e ht s et a ci . l a n i P l o r tn o c e dr a

7 C r y l t L 6 s . o

M L M M F S 5 6 5 4 3 2 1 7 65 4 3 l o r t n o C d n I r of M( e w oP i p u c p r i u c s E Y( 1 6 NC 5 4 3 2 1 0 1 T t a g n i r i w e h t s e t a c d n i e n il de hs a d tr o . kc o l b l a n i m r e t e ht m r e t n oi tc en n o c e ht ht n o r ot ce n n o c e ht dn u o r g n o it c e t o r p b . C. P l o r tn o c e h t s M 3 0 12 NC 2 1 ) I H W ( 1 0 F A 3. 6T V 05 2 + + - 0 4 N ) UL B 1 4 N 1 0 N C 3 1 ) U L B ) UL B( L K id n i e n il n ek or B . 1 h s de hs a d gn o L s e t a c i d n i . 2 s et a ci d n i s et a ci d n i e h t s e t a c i d n i . 3 e t a c i d n i . 4 r o f e t o m r e t i n u r o tc e l e s w o lF w e r c s ht r a E D E R 1 I H W 3 5 7 6 NC ) KL B( 2 2 NC 1 K L B 3 9 03 NC ) L E Y( C 1 U L B ( 2 U L B z H 0 K L B z H0 C1 ( 2 K L B B A 2 U1 U 2 0 B T LB I H W 2 1 B A 2 U1 U r e t p a d A e t o m e R d e r i W t i n u r o o d t u O e R s s e l e r iW r e ll o r t n o C ll o r t n o C

r o tc e l e s w o lF t i n u t i n u r o o d n I w e r c s ht r a E ) N ( S) L (R 1 0 BT y l p p u s r e w o P 5, ~ V0 4 2- 0 22 6, ~ V0 22 R OL OC N OI TA CI D NI D E R: DE R E TI H W : IH W W OL L E Y: L EY E UL B: UL B K C AL B: KL B N W O R B: W RB

– 17 – 4. PARTS RATING Indoor unit Model MMF-AP 0156H∗ 0186H∗ 0246H∗ 0276H∗ 0366H∗ 0486H∗ 0566H∗

Fan motor Pulse motor Pulse motor valve Driving motor for vertical louver TA sensor TC1 sensor TC2 sensor TCJ sensor ICF-340D62-1 ICF-340WD109-1 EFM-MD12TF-1 EDM-B40YGTF-2 EDM-B60YGTF-1 MP24Z4N Lead wire length: 1200 mm Vinyl tube Ø4 size lead wire length: 1200 mm Vinyl tube (Blue) Ø6 size lead wire length: 2000 mm Vinyl tube (Black) Ø6 size lead wire length: 1200 mm Vinyl tube (Red)

– 18 – 5. REFRIGERANT CYCLE DIAGRAM Indoor unit Liquid side Gas side Strainer Capillary tube Heat exchanger at indoor side Pulse Motor Valve (PMV) Strainer Sensor

(TCJ) Sensor (TC2) Explanation of functional parts in indoor unitFunctional part name Fan S M Fan motor ensor (TA) Functional outline Sensor (TC1)

Pulse Motor Valve PMV (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

Temp. Sensor (Connector CN104 (2P): Yellow)

1.TA 1) Detects indoor suction temperature

2.TC1 (Connector CN100 (3P): Brown) 1) Controls PMV super heat in cooling operation

3.TC2 4.TCJ (Connector CN101 (2P): Black) 1) Controls PMV under cool in heating operation (Connector CN102 (2P): Red) 1) Controls PMV super heat in cooling operation

– 19 – 6. CONTROL OUTLINE Indoor unit Control specifications NO. Item Specification outline Remarks

1 2 3 Upon power supply reset Operation selection Room temp. control Automatic capacity control 1. Identification of outdoor unit When the power supply is reset, the outdoor unit is identified, and control is redirected according to the identification result. 2. Indoor fan speed and air flow direction control availability settings Settings such as indoor fan speed and air flow direction control availability are replaced on the basis of EEPROM data. 3. If power supply reset is performed in the wake of a fault, the check code is cleared. If the abnormality persists after the Start / Stop button on the remote controller is pressed to resume operation, the check code is redisplayed on the remote controller. 1. The operation mode changes in response to an operation selection command issued via the remote controller. Remote controller command Control outline STOP Air conditioner shutdown FAN Fan operation COOL Cooling operation DRY Drying operation HEAT Heating operation 1. Adjustment range - remote controller temperature setting (°C) COOL / DRY HEAT Wired type 18~29 18~29 Wireless type 18~30 16~30 2. In heating operation, the temperature setting may be fine-tuned via the DN code “06”. SET DATA 0 2 4 6 Temperature setting adjustment +0 ˚C +2 ˚C +4 ˚C +6 ˚C Factory default Model type SET DATA Floor standing (standard, concealed, cabinet) 0 Other model 2 1. The outdoor unit determines the operational capacities of indoor units according to the difference between Ta and Ts. Ts: Temperature setting Ta: Room temperature Shift in heating suction temperature (not applicable to remote controller thermo operation) Ts: Temperature setting Ta: Room

temperature Cooling Heating Ta Ta (˚C) (˚C)

4 +2 +1 Ts –1 SD SB S9 S7 S5 S3 S0 +1 Ts –1 –2 S3 S5 S7 S9 SB SD SF S0

– 20 – NO. Item Specification outline Remarks

Fan speed control 1. The fan operates in one of the four speed modes of “HIGH (HH)”, “MED (H)”, “LOW (L)” and “AUTO” on the basis of a command issued via the remote controller. (Concealed duct high static pressure type: HH only) 2. In AUTO fan speed mode, the air speed changes according to the difference between Ta and Ts. <Cooling> Ta (˚C) HH > H+ > H > L+ > L > UL or LL

+3.0 +2.5 +2.0 +1.5 +1.0 +0.5 Tsc –0.5 HH <HH> H+ <HH> H <HH> L+ <H+> L <H> L <H> L <L+> A B C D E F G

• Control is identical in remote controller thermo and body thermo operation. Speed modes shown in < > apply to cooling operation under AUTO air conditioner operation mode. • In AUTO fan speed mode, the fan speed remains the same for 3 minutes each time a speed change occurs. However, a speed change command issued via the remote controller can 5 override this, and the fan speed changes accordingly. • At the beginning of cooling operation, a higher speed (steeper downward temperature gradient) is chosen. • As long as the temperature difference remains on a boundary line, the fan speed stays the same. <Heating> Ta (˚C) DN code “32” “0000”: Body thermo “0001”: Remote controller thermo

(–0.5) –1.0 (0) Tsh (+0.5) +1.0 (+1.0) +2.0 (+1.5) +3.0 (+2.0) +4.0 L <L+> L+ <H> H <H+> H+ <HH> HH <HH> E D C B A

Figures inside ( ) applies to remote controller thermo operation. Figures outside ( ) applies to body thermo operation. Speed modes shown in < > apply to heating operation under AUTO air conditioner operation mode. • In AUTO fan speed mode, the fan speed remains the same for 1 minute each time a speed change occurs. However, a speed change command issued via the remote controller can override this, and the fan speed changes accordingly. • At the beginning of heating operation, a higher speed (steeper upward temperature gradient) is chosen. • As long as the temperature difference remains on a boundary line, the fan speed stays the same. • When TC2 ≥ 60 °C, the fan speed is raised by one step. 3. If the air conditioner goes thermo OFF during heating operation, the fan speed drops down to LL (breeze). TC2: Indoor heat exchanger sensor temperature “HEATING STANDBY ” displayed

– 21 – NO. Item Specification outline Remarks

Cold air discharge prevention control 1. In heating operation, the upper limit of the fan tap is set according to the lower of whichever is the higher between TC2 sensor and TCJ sensor temperatures, on the one hand, and TC1 sensor temperature, on the other. • If the fan continuously operates in zone B for 6 minutes, it automatically moves into zone C. • During defrosting, the control point is shifted by +6 °C. TCJ: Indoor heat exchanger sensor temperature •In zones D and E, priority is given to the remote controller fan

6
C 32 30 28 26 20 16 D C E B A A zone: OFF B zone: 26˚C or above and below 28˚C breeze C zone: 28˚C or above and below 30˚C Low D zone: 30˚C or above and below 32˚C Medium E zone: High speed setting. •In zone A, “HEATING STANDBY ” is displayed.

Freeze prevention control (low temp. release) 1. During cooling, the air conditioner is operated in the manner described below according to the temperature readings of the TC1, TC2 and TCJ sensors. • If zone J operation is detected for 5 minutes, the air conditioner is forced into thermo OFF. • In zone K, the timer is put on pause, with the current timer count retained. • If zone I operation is detected, the timer count is cleared, and the air conditioner returns to normal operation. • If continuous zone J operation forces the air conditioner into thermo OFF, the indoor fan is operated in breeze mode until it moves into zone I. The control is terminated under the following conditions: Termination conditions 1) TC1 ≥ 12 °C, TC2 ≥ 12 °C, and TCJ ≥ 12 °C TC1: Indoor heat exchanger sensor temperature

(˚C) P1 a K P1 TC1 10˚C (5˚C) TC2, TCJ –10˚C

–14˚C I

Q1 J Q1 0˚C

7 2) Passage of 20 minutes after stoppage 2. During cooling, the air conditioner is operated in the manner described below according to the temperature readings of the TC2 and TCJ sensors. • If zone M operation is detected for 45 minutes, the air conditioner is forced into thermo OFF. • In zone N, the timer is put on pause, with the current timer count retained. • When the air conditioner goes back into zone M, timer count is resumed from the retained value.

(˚C) P2 Q2 L N M P2 Q2 TC2, TCJ 5 –2.0

• If zone L operation is detected, the timer count is cleared, and the air conditioner returns to normal operation. Reset conditions 1) TC1 ≥ 12 °C, TC2 ≥ 12 °C and TCJ ≥ 12 °C 2) Passage of 20 minutes after stoppage * With models without TC2, TC2 is not part of the control parameters.

– 22 – NO. Item Specification outline Remarks

8 9 10 11 Cooling oil (refrigerant) recovery control Heating refrigerant (oil) recovery control Defrosting control Short intermittent operation compensation control While the outdoor unit is recovering cooling oil (refrigerant), the indoor units perform the following control tasks: [common for operational (cooling thermo ON / thermo OFF / FAN), as well as nonoperational indoor units] 1) Open the indoor PMV to a certain degree. 2) Engage in recovery control for a specified period of time and return to normal cooling operation at the end of this period upon terminating the control. 3) Operate the drain pump throughout the recovery control period and for about 1 minute after it. While the outdoor unit is recovering heating refrigerant (oil), the indoor units perform the following control tasks: 1) Open the indoor PMV to a certain degree. 2) Control the indoor fan according to the operation mode. [Indoor units operating in heating thermo ON / OFF state] Let the indoor fan continue operating, but turn it off if the temperature of the indoor heat exchanger drops. [Indoor units operating in FAN mode] Turn off the indoor fan and display “HEATING STANDBY ” on the remote controller. [Non-operational indoor units] Keep the indoor fan turned off. 3) Terminate the recovery operation depending on the TC2 temperature reading. The timing of termination is determined by each indoor unit. 4) Operate the indoor fan and drain pump for about 1 minute after the termination of the recovery operation. (Applicable to compact 4-way cassette type and 1- way cassette type) While the outdoor unit is engaged in defrosting control, the indoor units perform the following control tasks: 1) Open the indoor PMV to a certain degree. 2) Control the indoor fan according to the operation mode. [Indoor units operating in heating thermo ON / OFF state] Let the indoor fan continue operating for a while, but turn it off as the temperature of the indoor heat exchanger drops. [Indoor units operating in FAN mode] Let the indoor fan continue operating. [Non-operational indoor units] Keep the indoor fan turned off. 3) As defrosting control comes to an end, it gives way to heating refrigerant (oil) recovery control. (For control details, see “9. Heating refrigerant (oil) recovery control” above.) 1. For 5 minutes after startup, the system is forced to continue operating even if it reaches the thermo OFF region. 2. However, priority is given to cooling / heating selection, operation standby, and protective control, so that there is no overriding of thermo OFF in these cases. • Recovery operation normally takes place roughly every 2 hours. • The opening position of the indoor PMV depending on the type and capacity of the indoor unit. • Recovery operation normally takes place roughly every hour. • The opening position of the indoor PMV depending on the type and capacity of the indoor unit. • For defrosting commencement conditions, see 5 Control Outline “10. Defrosting control (reverse defrosting method)” in SMMS-i Outdoor Unit Service Manual A10-005 above. • The opening position of the indoor PMV depending on the type and capacity of the indoor unit.

12 1. When the air conditioner is turned off after engaging in heating operation, Elimination of

13 residual heat Filter sign display (not applicable to wireless type) *Provided in the separately mounted type, TCB-AX32E2. the indoor fan is operated for about 30 seconds in “breeze” mode. 1. The indoor fan’s cumulative hours of operation are counted, and when these exceed the prescribed value (150H), a filter replacement signal is sent to the remote controller to display a filter sign on it. 2. When a filter reset signal is received from the remote controller, the timer measuring cumulative hours is cleared. If the prescribed hours have been exceeded, the hours count is reset, with the sign on the remote controller display erased. Filter service life 150H “FILTER ” displayed

– 23 – NO. Item Specification outline Remarks

Operation standby Heating standby 14 Selection of central control mode <Operation standby> .......... Displayed on remote controller 1. When any of the DN codes listed below is displayed • “P05” - Detection of an open phase in the power supply wiring • “P10” - Detection of indoor flooding in at least one indoor unit • “L30” - Detection of an interlock alarm in at least one indoor unit 2. Forced thermo OFF • “COOL / DRY” operation is unavailable because at least one indoor unit is operating in “HEAT” mode. • “HEAT” operation is unavailable because at least one indoor unit is operating in “COOL / DRY” mode under priority cooling setting (bit 1 of SW11 on outdoor I/ F P.C. board ON). 3. All indoor units not able to engage in any of the above operations stand by in thermo OFF state. 4. The indoor fan has been turned off because the system is engaged in a heat refrigerant (oil) recovery operation. <Heating standby> .......... Displayed on remote controller 1. Normal thermo OFF • During heating, the indoor unit goes thermo OFF as the heating temperature setting is reached. 2. During heating, the fan rotates at a breeze speed (UL or lower) or remains stationary to prevent cold air from being discharged (including defrosting operation). 3.Forced thermo OFF • “HEAT” operation is unavailable because at least one indoor unit is operating in “COOL / DRY” mode under priority cooling setting (bit 1 of SW11 on outdoor I/ F P.C. board ON). 1. The range of operations that can be performed via an indoor unit remote controller can be determined through the setting of the central controller. 2. Setting details TCC-Link central control • “OPERATION STANDBY ” displayed No display provided on wireless remote controller • “HEATING STANDBY ” displayed • In the case of a wired remote controller, “CENTRAL CONTROL IN PROGRESS ”

Operation Operation on RBC-AMT32E RBC is displayed (lit up)

15 via TCCLink central control Individual Central 1 Central 2 Central 3 Central 4 Start / stop selection 🏵 × × 🏵 🏵 Operation mode selection 🏵 🏵 × × × Timer setting 🏵 × × 🏵 🏵 Temperature setting 🏵 🏵 × × 🏵 Fan speed setting 🏵 🏵 🏵 🏵 🏵 Air flow direction setting 🏵 🏵 🏵 🏵 🏵 AMT32E display “CENTRAL CONTROL IN PROGRESS” while in central control mode. • The display blinks when a control function inaccessible to a remote controller is chosen. • A wireless remote

(🏵 : Accessible × : Inaccessible) controller has the same set of control functions, although there is no display. When a control operation is performed via a wireless remote controller while in central control mode, a peep sound alert (5 times) is provided.

– 24 – NO. Item Specification outline Remarks DC motor 1) When the fan operation has started, positioning of the stator and the rotor are performed. (Moves slightly with tap sound) 2) The motor operates according to the command from the indoor controller. 16 Notes) • When the fan rotates while the air conditioner stops due to entering of outside air, etc, the air conditioner may operate while the fan motor stops.

17 18 Power saving mode Frequency fixed operation (Test run) • When a fan lock is found, the air conditioner stops, and an error is displayed. 1. Push the SAVE button on the remote controller 2. The “ “ segment lights up on the wired remote controller display. 3. The requirement capacity ratio is limited to approximately 75 %. 4. If the power saving operation is enabled, the settings are retained when the operation is stopped, when the mode is changed, or when the power is reset. The power saving operation will be enabled the next time the operation starts. <In case of wired remote controller> 1) When pushing [CHK] button for 4 seconds or more, [TEST] is displayed on the display screen and the mode enters in Test run mode. 2) Push [ON/OFF] button. 3) Using [MODE] button, set the mode to [COOL] or [HEAT]. • Do not use other mode than [COOL]/[HEAT] mode. • During test run operation, the temperature cannot be adjusted. • An error is detected as usual. • A frequency fixed operation is performed. 4) After the test run, push [ON/OFF] button to stop the operation. (Display in the display part is same as the procedure in Item 1.) 5) Push [CHK] button to clear the test run mode. ([TEST] display in the display part disappears and the status returns to the normal stop status.) <In case of wireless remote controller> 1) When TEMPORARY button is pushed for 10 seconds or more, “Pi!” sound is heard and the operation changes to test run. 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 TEMPORARY button once again (Approx. 1 second). Check wiring / piping of the indoor and outdoor units in test run. TEMPORARY button Check code “P12” The power saving operation cannot be set by the wireless remote controller or wired remote controller of AMT31E or older. Command frequency is approximately [S7]

– 25 – 7. APPLIED CONTROL AND FUNCTIONS (INCLUDING CIRCUIT CONFIGURATION) 7-1. Indoor controller block diagram 7-1-1. In Case of Connection of Wired (Simple) Remote Controller Wired(Simple) header remote controller (Up to 2 units) Schedule timer

Display LCD Display LED Function setup Key switch CPU Display LCD CN1 LCD driver Function setup

EEPROM DC5V DC5V Power circuit CN2 CPU Key switch

Indoor unit #1 (Header) *1 Remote controller communication circuit A B Indoor control P.C. board (MCC-1643) Remote controller Power circuit #2 (Follower) A B Secondary battery #3 (Follower) A B

PMV DC20V DC5V DC12V communication circuit Driver MCU EEPROM TA sensor TC1 sensor TC2 sensor TCJ sensor HA Same as leftSame as left

Outside output U1 U2 U1 U2

Louver motor Start/Alarm L N L N

supplyPower

Power Outdoor supply

Indoor fan motor DC 280V Power circuit Fan motor control cicuit L N BUS communication circuit U1 U2 unitOutdoor unit

Max. 8 units are connectable. *1 The schedule timer cannot be connected to the simple wired remote controller. Indoor/Outdoor communication

U1 U2 Power supply

1Ø220-240V, 50Hz 1Ø220V, 60Hz Outdoor unit

– 26 – 7-1-2. In Case of Connection of Wireless Remote Controller Indoor unit

#1 (Header) A B Wireless remote #2 #3 (Follower) (Follower)

Indoor control P.C. board (MCC-1643) DC20V Remote controller controller kit Receiving P.C. board Remote controller A B A B

communication circuit communication circuit

DC5V DC12V PMV MCU Driver EEPROM TA sensor TC1 sensor TC2 sensor TCJ sensor HA Power circuit DC5V CPU Buzzer Receiving circuit Emergent operation SW Function setup SW Display LED Same as leftSame as left

Louver motor Indoor fan motor DC Outside output Start/Alarm Fan motor control circuit BUS communication circuit L U1U2 N L U1U2 N

280V Power Power supply Power supply

circuit L N Power supply U1 U2 Indoor/Outdoor Outdoor unit Outdoor unit

1Ø220-240V, 50Hz 1Ø220V, 60Hz communication

U1 U2 Outdoor unit – 27 – 7-1-3. Connection of Both Wired (Simple) Remote Controller and Wireless Remote Controller Wired(Simple) header remote controller Schedule timer

Display LCD EEPROM CPU Function setup Key switch CN2 Display LCD LCD driver Function setup

Display LED DC5V Power circuit CN1 DC5V CPU Key switch

Indoor unit #1 (Header) Remote controller communication circuit A B *1 Power circuit Secondary battery

Wireless remote controller kit #2 #3 (Follower) (Follower)

Indoor control P.C. board (MCC-1643) DC20V Remote controller communication circuit Receiving P.C. board Remote controller communication circuit A B A B DC5V DC12V EEPROM TA sensor TC1 sensor Power circuit DC5V CPU Emergent operation SW Same as leftSame

Driver PMV MCU Buzzer TC2 sensor Receiving Function setup SW Display LED as left

Louver motor Outside output Start/Alarm TCJ sensor HA circuit U1U2 U1U2

Indoor fan motor DC 280V Power Fan motor control cicuit BUS communication circuit L N Power supply L N Power supply

circuit Outdoor unitOutdoor unit L N U1 U2

Power supply 1Ø220-240V, 50Hz 1Ø220V, 60Hz Indoor/Outdoor communication

Max. 8 units are connectable. U1 U2 Outdoor unit

*1 The schedule timer cannot be connected to the simple wired remote controller. – 28 – 7-2. Indoor Print Circuit Board (MCC-1643) y l p p u , s , ) r ) y w l V k e o p c V l 0 w l p a 0 l 4 o e u 4 2 p Y B s - ( 2 ( - 0 a r 9 7 n 0 2 e 0 6 2 2 o w i 3 2 t N C o N p C r P C A O C A o t o m ) 0 n e t 1 a i f 2 h C N W D C ( t i n u , ) S k F c r a l o f B ( t

D E L yl pp u s r e w o P r e ll o r tn o c e to m e r fo ) d e R ( 30 4 D u pt u O 18 N C V 21 CD t u pt u o V MP , )e u l B ( 2 8N C V 21 CD ) 0 1 T( AH , ) w o ll e Y ( 1 6 NC V 21 CD

, ) e t i P S I D , ) e t ih W ( 2 7 NC V 5 CD t i k l o r t n o c n o it a c il pp A , )de R ( 1 2 5 NC V 5 , V21 CD r e v u o L r e l l o 0 1 5 N C D E L n ) e t ih W(

K H C r e l l o r t h W ( 1 7 N C , V 5 CD r oo n o i ) , )n w r , )d r , ) kc a l , ) w o ll f o D E L yl r o ss r t n o c e t o m e R ) o it a c i n u m m o c ) n e e r G ( 4 05 D l a r t n e c r o o D E L n o it a c i n u m ) n o c et o m eR ) e u l B ( 1 4 NC V 02 CD dt u O / r o o d n I t a c i n u m m o c e u l B ( 04 NC r o s n e s 1 CT o r B ( 001 NC V 5 CD o s n e s J CT e R ( 2 01 NC V 5 CD o s n e s 2 CT B ( 1 01 NC V 5 CD r o s n e s AT e Y ( 4 01 NC V 5 CD pp u s r e w o P e c o r p o r c im e d R ( 1 05 D dt u O/ r o o d n I m o c l o r t n oc w o ll e Y ( 30 5D – 29 – 7-3. Optional connector specifications of indoor P.C. board l a t n o e z t i r o o m h e r r e ) e v n n h u t o o i o i

s kr a m e R s n o t a r e p o p o t s y b FF O h t i w , n o it a r e p o t in u r o o d n i y b N O f o kc o lr e t n I : t n e m pi h s t a g n it t e S n o de m r o fr e p s i r e ll o r t n o c e t o m e r e ht n o n o t t u b N A F y b g n it t e s n o it a r e p o e lg n i s e hT ∗ ) 1 00 0 → 0 00 0 = ]1 3 [ N D ( r e ll o r t n o c t c e l e s t u p n i c it a t S/ ) yr o t c a f m o r f t n e m pi h s t A( e s l u P= O N/ SE Y: 1 0 J( t u p n i FF O/ N O A H . t u p n i y b de m r o fr e p s i p o t s n o it a r e p o r e ll o r t n o c e t o m e r f o n o i t i bi h o r P/ n o is s i m r e P t u p n i d e t ib ) A H f o kc a b r e w s n A ( N O n o it a r e p O )r o t c e ll o c N O t u pt u o g n i n r a W )r o t c e ll o L , ” H ì n a f r o o d n i f o n o it a r e p o s m r o fr e P ( . n o it a r e p o r o o d n i kc e h c o t d e s u s i kc e h c s ih T ) r e ll o r t n o c e t o m e r dn a r o o dt u o h t i w n o it a c i n u m m o c t u o h t i w N O p m u p n i a r D dn a . yl n o r e ll o r t n o c e t o m e r dn a t in u r o o d n i y b e l b a li a v a s i n o it a c in u m m o C ) E1 CU C P- B C T ( t i k l o r t n o c n o it a c il pp A d e t c e n n o C

it a c i fi c e pS . o N n i P . o Nr o t c e n n o C V 2 1 C D 1 2 3 N C t ) r o t c e ll o c n e p O ( t u pt u O2 t u p n i FF O/ N O 1 V 0 2 i h o r p r e l l o r t n o c e t o m e R 3 1 6 N C n e p O ( t u pt u o n o it a r e p O 4 V 2 1 C D 5 c n e p O ( t u pt u o g n i n r a W6 1 1 7 NC V 0 2 1 2 7 NC V 0 2 V 2 1 1 V 5 2 n o is s i m s n a r T3 1 2 5 N C ti e v i e c e R4 V 0 5

n o it c n u F u pt u o n o it a li t n e V A H K HC k c e h c n o it a r e pO P SI D e do m n o i ti bi hx E k l o r t n o c n o it pO

– 30 – 7-4. Test operation of indoor unit Check function for operation of indoor unit (Functions at indoor unit side) This function is provided to check the operation of the indoor unit singly without communication with the remote controller or the outdoor unit. This function can be used regardless of operation or stop of the system. However, if using this function for a long time, a trouble of the equipment may be caused. Limit using this function within several minutes. [How to operate] 1) Short-circuit CHK pin (CN71 on the indoor P.C. board). The operation mode differs according to the indoor unit status in that time. Normal time: Both float SW and fan motor are normal. Abnormal time: Either one of float SW or fan motor is abnormal. 2) Restricted to the normal time, if short-circuiting DISP pin (CN72 on the indoor P.C. board) in addition to short-circuit of CHK pin (CN71 on the indoor P.C. board), the minimum opening degree (30 pls) can be set to the indoor PMV only. When open DISP pin, the maximum opening degree (1500 pls) can be obtained again. [How to clear] Open CHK pin. While the system is operating, it stops once but automatically returns to operation after several minutes. Short-circuit of CHK pin

Fan motor DISP pin open (H) Normal time DISP pin short circuit (H) Abnormal time Stop Indoor PMV (*) Louver Communication P.C. board LED Max. opening degree (1500 pls) Vertical All ignored Lights Min. opening degree (30 pls) Vertical All ignored Lights Min. opening degree (30 pls) Immediate stop All ignored Flashes

• To exchange the indoor PMV coil, set the indoor PMV to Max. opening degree. • For the detailed positions of CHK pin (CN71 on indoor P.C. board) and DISP pin (CN72 on indoor P.C. board), refer to the indoor P.C. board. – 31 –

7-5. Method to set indoor unit function DN code (When performing this task, be sure to use a wired remote controller.) <Procedure> To be performed only when system at rest 1 Push the + SET + CL buttons simultaneously and hold for at least 4 seconds. The unit No. displayed first is the address of the header indoor unit in group control. Then the fan and louver of the selected indoor unit move. 2 Each time the UNIT LOUVER button (left side of the button) is pressed, one of the indoor unit Nos. under group control is displayed in turn. Then the fan and louver of the selected indoor unit move. 3 Use the TEMP. button to select the CODE No. (DN code) of the 00 01 1-1 10 CODE No. SET DATA SETTING TEST UNIT No. R.C. No. TEMP. ON / OFF TIMER SET MODE FAN

desired function. 4 Use the button to select the desired SET DATA associated with the selected function. TIME TEST FILTER RESET CL SET SAVE SWING/FIX VENT UNIT LOUVER

5 Push the SET button. (The display changes from flashing to 3 steady.) • To change the selected indoor unit, go back to step 2. • To change the selected function, go back to step 3. 6 When the SET button is pushed, the system returns to normal off state. 5 4 6 1 2

– 32 – Function CODE No. (DN Code) table (includes all functions needed to perform applied control on site) DN Item Description At shipment

Filter display delay timer 0000: None 01 0002: 2500H 0004: 10000H 0001: 150H 0003: 5000H 0001: 150H

02 Dirty state of filter 0000: Standard 0001: High degree of dirt (Half of standard time) 0000: Standard 03 Central control address 0001: No.1 unit 0099: Unfixed to 0099: Unfixed 0064: No.64 unit 04 Specific indoor unit priority 0000: No priority 0001: Priority 0000: No priority

06 Heating temp shift 0000: 0 °C 0002: +2 °C to 0001: +1 °C 0010: +10 °C (Up to +6 recommended) 0000: 0 °C

0d Existence of [AUTO] mode 0000: Provided 0001: Not provided (Automatic selection from connected outdoor unit) 0001: Not provided

0F Cooling only 0000: Heat pump 0001: Cooling only (No display of [AUTO] [HEAT]) 0000: Heat pump

10 001 Type 3: Floor Standing 0013: Floor Standing 11 Indoor unit capacity 0000: Unfixed 0001 to 0034 According to capacity type 12 Line address 0001: No.1 unit 00 to 0099: Unfixed 30: No.30 unit 13 Indoor unit address 0001: No.1 unit 0064: No.64 to 0099: Unfixed unit

14 Group address 0000: Individual 0002: Follower unit of group 0001: Header unit of group 0099: Unfixed 19 Louver type (Air direction adjustment) 0000: No louver 0001: Swing only 0001: Swing only

Temp difference of 0000: 0 deg to 000 0010: 10 deg 3: 3 deg

1E [AUTO] mode selection COOL → HEAT, HEAT → COOL (For setup temperature, reversal of COOL / HEAT by } (Data value) / 2) (Ts ±1.5)

28 Automatic restart of power failure 0000: None 0001: Restart 0000: None

2A Selection of option/error input (TCB-PCUC1E: CN3) 2E HA terminal (CN61) select 0000: Filter input 0002: None 0000: Usual 0002: Fire alarm input 0001: Alarm input (Air washer, etc.) 0002: None 0001: Leaving-ON prevention control 0000: Usual (HA terminal)

31 Ventilating fan control 0000: Unavailable 0001: Available 0000: Unavailable 32 TA sensor selection 0000: Body TA sensor 0001: Remote controller sensor 0000: Body TA sensor 33 Temperature unit select 0000: °C (at factory shipment) 0001: °F 0000: °C

60 Timer setting (wired remote controller) 0000: Available (can be performed) 0001: Unavailable (cannot be performed) 0000: Available D0 Whether the power saving mode can be set by the remote controller 0000: Invalid 0001: Valid 0001: Valid

F6 Presence of Application control kit (TCB-PCUC1E) 0000: None 0001: Exist 0000: None

– 33 –

Type DN code “10” Value Type Model 0013 Floor Standing MMF-AP∗∗∗H∗

Indoor Unit Capacity DN code “11”

Value 0000* 0001 0003 0005 0007 0009 0011 0012 0013 0015 0017 0018 0021 0023 ~ Capacity Invalid 007 type 009 type 012 type 015 type 018 type 024 type 027 type 030 type 036 type 048 type 056 type 072 type 096 type —

*1 Default value stored in EEPROM mounted on service P.C. board – 34 – 7-6. Applied control of indoor unit Control system using remote controller interface (TCB-IFCB-4E2) Wiring and setting • In the case of group control, the control system functions as long as it is connected to one of the indoor units (control P.C. board) in the group. If it is desired to access the operation and error statuses of other units, relevant signals must be brought to it from those units individually. Control items (1) Start / Stop input signal Start / stop of unit (2) In-operation signa Output present while unit in normal operation (3) Error signal Output present while alarm (e.g. serial communication error or operation of protective device for indoor / outdoor unit) being activated Wiring diagram of control system using remote controller interface (TCB-IFCB-4E2) Input IFCB-4E2: No-voltage ON / OFF serial signal Output No-voltage contact (in-operation and error indication) Contact capacity: Max. AC 240 V, 0.5 A Indoor control P.C. board TCB-IFCB-4E2

1 1

Start/Stop input ON side

COM (GND) Remote controller sisabling / ending input In-operation signal output COM (+12V) Error signal output 2 3 4 5 6 CN61 T10 (Yellow) 2 3 4 CN06 1 2 3 4 5 6 CN13 Power supply 220-240V Start signal input OFF side Stop signal input COM In-operation signal output Error signal output

– 35 – 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 + 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 (left side of the 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 CODE No. 31. 4 Using the timer time or button, select the SET DATA. (At shipment: 0000) The setup data are as follows:

SET DATA 0000 0001 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 returns the status to the usual stop status. 2. Wiring Relay (DC12V, procured locally) Corresponds to the relay up to one that the rated current of the operation coil is approx. 75mA

CN32 FAN DRIVE (2P WHI) 1 2 1 2 Outside control input of fan To terminal

Indoor control P.C. board Note) Determine the cable length between the indoor control P.C. board and the relay within 2m. – 36 – 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 CODE No. 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 + buttons for 4 seconds or more. 2 Using the setup temp or button, specify the CODE No. 2E. 3 Using the timer time or button, set 0001 to the SET DATA. 4 Push SET button. 5 Push button. (The status returns to the usual stop status.) 3. Wiring Relay (procured locally)

CN61 1 1 T10 2 2 (YEL) 3 3 4 4 5 5 6 6 Indoor control P.C. board * In the figure, the contact indicates a status that the card is taken out. 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 thermo. OFF operation starts. Application control kit (TCB-PCUC1E) is necessary. Please refer to the manual of Application control kit for a detailed setting. – 37 – Manual address setting using the remote controller Procedure when setting indoor units’ addresses first under the condition that indoor wiring has been completed and outdoor wiring has not been started (manual setting using the remote controller) Wiring example of 2 refrigerant lines Refrigerant line 1 Refrigerant line 2

Outdoor unit Indoor unit 1 Remote controller Indoor unit 2 Indoor unit 3 Outdoor unit Indoor unit 1 Indoor unit 2

Line (system) address 1 1 2 2 1 Indoor unit address 2 3 1 2 1 Header unit Group address 2 1 Follower unit2 Follower unit2 Follower unit2 Follower unit In the example above, disconnect the remote controller connections between the indoor units and connect a wired remote controller to the target unit directly before address setting. SET DATA Code No.

2, 5, 8 11 TEMP. TIMER SET FAN SAVE ON / OFF MODE VENT 3, 6, 9

TEST FILTER SET 4, 7, 10 TIME

1 RESET CL SWING/FIX UNIT LOUVER

Pair the indoor unit to set and the remote controller one-to-one. Turn on the power. 1 Push and hold the SET , CL and buttons at the same time for more than 4 seconds. LCD starts flashing. – 38 – <Line (system) address> 2 Push the TEMP. / buttons repeatedly to set the CODE No. to 12 . 3 Push the TIME / buttons repeatedly to set a system address. (Match the address with the address on the interface P.C. board of the header outdoor unit in the same refrigerant line.) 4 Push SET button. (It is OK if the display turns on.) <Indoor unit address> 5 Push the TEMP. / buttons repeatedly to set the CODE No. to 13 . 6 Push the TIME / buttons repeatedly to set an indoor unit address. 7 Push the SET button. (It is OK if the display turns on.) <Group address> 8 Push the TEMP. / buttons repeatedly to set the CODE No. to 14 . 9 Push the TIME / buttons repeatedly to set a group address. If the indoor unit is individual, set the address to 0000 ; header unit, 0001 ; follower unit, 0002 . Individual : 0000

Header unit : 0001 Follower unit : 0002 10 Push the SET button. } In case of group control

(It is OK if the display turns on.) 11 Push the button. The address setting is complete. ( SETTING flashes. You can control the unit after SETTING has disappeared.) NOTE 1. Do not use address numbers 29 or 30 when setting system addresses using the remote controller. These 2 address numbers cannot be used on outdoor units and the CODE No. [E04] (Indoor / outdoor communication error) will appear if they are mistakenly used. 2. If you set addresses to indoor units in 2 or more refrigerate lines manually using the remote controller and will control them centrally, set the header outdoor unit of each line as below. • Set a system address for the header outdoor unit of each line with SW13 and 14 of their interface P.C. boards. • Turn off dip switch 2 of SW30 on the interface P.C. boards of all the header outdoor units connected to the same central control, except the unit that has the lowest address. (For unifying the termination of the wiring for the central control of indoor and outdoor units) • Connect the relay connectors between the [U1, U2] and [U3, U4] terminals on the header outdoor unit of each refrigerate line. • After finishing all the settings above, set the address of the central control devices. (For the setting of the central control address, refer to the installation manuals of the central control devices.) – 39 – Confirming the indoor unit addresses and the position of an indoor unit using the remote controller Confirming the numbers and positions of indoor units To see the indoor unit address of an indoor unit which you know the position of When the unit is individual (the indoor unit is paired with a wired remote controller one-to-one), or it is a group-controlled one.

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

TEST FILTER SET CL RESET (Execute it while the units are running.) SWING/FIX UNIT LOUVER 2

1 Push the ON / OFF button if the units stop. 2 Push the UNIT LOUVER button (left side of the button). A unit numbers 1-1 is indicated on the LCD (it will disappear after a few seconds). The indicated number shows the system address and indoor unit address of the unit. When 2 or more indoor units are connected to the remote controller (group-controlled units), a number of other connected units appears each time you push the UNIT LOUVER button (left side of the button). – 40 – To find an indoor unit’s position from its address When checking unit numbers controlled as a group

TEMP. TIMER SET FAN ON / OFF MODE

3Stop 1 SETTIME

TEST FILTER RESET CL SAVE SWING/FIX VENT UNIT LOUVER

1 2 (Execute it while the units are stopped.) The indoor unit numbers in a group are indicated one after another. The fan and louvers of the indicated units are activated. 1 Push and hold the VENT and buttons at the same time for more than 4 seconds. • ALL appears on UNIT No. on the LCD display. • The fans and louvers of all the indoor units in the group are activated. 2 Push the UNIT LOUVER button (left side of the button). Each time you push the button, the indoor unit numbers are indicated one after another. • The first-indicated unit number is the address of the header unit. • Only the fan and louvers of the indicated indoor unit are activated. 3 Push the button to finish the procedure. All the indoor units in the group stop. – 41 – To check all the indoor unit addresses using an arbitrary wired remote controller. (When communication wirings of 2 or more refrigerant lines are interconnected for central control)

1 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

632 4 5 (Execute it while the units are stopped.) You can check indoor unit addresses and positions of the indoor units in a single refrigerant line. When an outdoor unit is selected, the indoor unit numbers of the refrigerant line of the selected unit are indicated one after another and the fan and louvers of the indicated indoor units are activated. 1 Push and hold the TIME and buttons at the same time for more than 4 seconds. At first, the line 1 and CODE No. AC (Address Change) are indicated on the LCD display. (Select an outdoor unit.) 2 Push the UNIT LOUVER button (left side of the button) and SWING/FIX buttons repeatedly to select a system address. 3 Push the SET button to confirm the system address selection. • The address of an indoor unit connected to the selected refrigerant line is indicated on the LCD display and its fan and louvers are activated. 4 Push the UNIT LOUVER button (left side of the button). Each time you push the button, the indoor unit numbers of the selected refrigerant line are indicated one after another. • Only the fan and louvers of the indicated indoor unit are activated. To select another system address 5 Push the CL button to return to step 2. • After returning to step 2, select another system address and check the indoor unit addresses of the line. 6 Push the button to finish the procedure. – 42 – Changing the indoor unit address using a remote controller To change an indoor unit address using a wired remote controller. The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-to-one), or an indoor unit in a group. (The method is available when the addresses have already been set automatically.)

3 TEMP. TIMER SET FAN ON / OFF MODE

8 5 4 SETTIME

TEST FILTER RESET CL SAVE SWING/FIX VENT UNIT LOUVER

1 2, 6, 7 (Execute it while the units are stopped.) 1 Push and hold the SET , CL , and buttons at the same time for more than 4 seconds. (If 2 or more indoor units are controlled in a group, the first indicated UNIT No. is that of the head unit.) 2 Push the UNIT LOUVER button (left side of the button) repeatedly to select an indoor unit number to change if 2 or more units are controlled in a group. (The fan and louvers of the selected indoor unit are activated.) (The fan of the selected indoor unit is turned on.) 3 Push the TEMP. / buttons repeatedly to select13 for CODE No. 4 Push the TIME / buttons repeatedly to change the value indicated in the SET DATA section to that you want. 5 Push the SET button. 6 Push the UNIT LOUVER button (left side of the button) repeatedly to select another indoor UNIT No. to change. Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique. 7 Push the UNIT LOUVER button (left side of the button) to check the changed addresses. 8 If the addresses have been changed correctly, push the button to finish the procedure. – 43 – To change all the indoor unit addresses using an arbitrary wired remote controller. (The method is available when the addresses have already been set automatically.) (When communication wirings of 2 or more refrigerant lines are interconnected for central control) NOTE You can change the addresses of indoor units in each refrigerant line using an arbitrary wired remote controller. * Enter the address check / change mode and change the addresses.

1 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

3 2 Cancels the line selection If no number appears on UNIT No., no outdoor unit exists on the line. Push button and select another line following step 2. (Execute it while the units are stopped.) 1 Push and hold the TIME / buttons at the same time for more than 4 seconds. At first, the line 1 and CODE No. AC (Address Change) are indicated on the LCD display. 2 Push UNIT LOUVER button (left side of the button) and SWING/FIX buttons repeatedly to select a system address. 3 Push the SET button. • The address of one of the indoor units connected to the selected refrigerant line is indicated on the LCD display and the fan and louvers of the unit are activated. At first, the current indoor unit address is displayed in SET DATA. (No system address is indicated.) – 44 –

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

8 TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

Finish 5, 76 Press to finish setting 4 Push the TIME / buttons repeatedly to change the value of the indoor unit address in SET DATA. Change the value in SET DATA to that of a new address. 5 Push the SET button to confirm the new address on SET DATA. 6 Push the UNIT LOUVER button (left side of the button) repeatedly to select another address to change. Each time you push the button, the indoor unit numbers in a refrigerant line are indicated one after another. Only the fan and louvers of the selected indoor unit are activated. Repeat steps 4 to 6 to change the indoor unit addresses so as to make each of them unique. 7 Push the SET button. (All the segments on the LCD display light up.) 8 Push the button to finish the procedure. – 45 – Error clearing function How to clear the error using the wired remote controller Clearing an error of the outdoor unit Clear the currently detected outdoor unit for each refrigerant line to which the indoor unit controlled by the remote controller is connected. (The indoor unit error is not cleared.) Use the service monitoring function of the remote controller. 1 Push and hold the CL , and for 4 seconds or longer to enter the service monitoring mode. 2 Push the TEMP. button to set CODE No. to “FF”. 3 The display in A of the following figure counts down as follows at 5-second intervals: “0005” → “0004” → “0003” → “0002” → “0001” → “0000”. The error is cleared when “0000” appears. However, the display counts down from “0005” again. 4 Push the to return the display to normal. 3

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

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

Clearing an error of the indoor unit Push the ON / OFF button on the remote controller. (Only the error of the indoor unit controlled by the remote controller will be cleared.) – 46 – Monitoring function of wired remote controller The following monitoring function is available if the remote controller of RBC-ATM32E is used.

2 TEMP. TIMER SET TIME FAN SAVE ON / OFF MODE VENT TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

4 1 3 Content Enter the service monitoring mode using the remote controller to check the sensor temperature or operation status of the remote controller, indoor unit, and outdoor unit. 1 Push and hold the , and CL for 4 seconds or longer to enter the service monitoring mode. The service monitor lights up. The temperature of CODE No. 00 appears at first. 2 Push the TEMP. button to change to CODE No. of the item to monitor. Refer to the following table for CODE No. 3 Push the left part of the UNIT LOUVER button (left side of the buton) to change to the item to monitor. Monitor the sensor temperature or operation status of the indoor unit and outdoor unit in the refrigerant line 4 Push the to return the display to normal. – 47 – Target outdoor unit (SMMS, SHRM, Mini-SMMS – Series 1 – 2) CODE No. Data Format Unit Remote controller display example

Indoor unit data System unit data 00 01 02 03 04 05 08 0A 0B 0C 0D Room temperature (in control) *1 ×1 Room temperature (Remote controller) ×1 Air Temperature (TA) ×1 Coil Temperature (TCJ) ×1 Coil Temperature (TC2) ×1 Coil Temperature (TC1) ×1 PMV ×1 Number of connected indoor units ×1 Total horse power of connected indoor units ×1 Number of connected outdoor units ×1 Total horse power of outdoor units ×1
C
C
C
C
C
C pls — HP — HP [0024]=24 ˚C [0050]=500 pls [0048]=48 [0415]=41.5 HP [0004]=4 [0420]=42 HP

CODE No. Data Format Unit Remote controller display example U1 U2 U3 U4

Individual data 1 of outdoor 10 20 30 40 Discharge temperature of compressor 1 (Td1) Discharge temperature of compressor 2 ×1 ˚C [0024]=24 ˚C

unit *3 11 21 31 41 ×1 ˚C (Td2)

12 22 32 42 Detection pressure of high-pressure sensor (Pd) Detection pressure of low-pressure sensor ×1 MPa [0123]=1.23 MPa

13 23 33 43 ×1 MPa (Ps)

14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F Suction Temperature (TS) Coil Temperature 1 (TE) Liquid Temperature (TL) Outdoor Temperature (TO) Low-pressure saturation temperature (TU) Current of compressor 1 (I1) Current of compressor 2 (I2) PMV1 + 2 PMV3 Compressor 1, 2 ON/OFF Outdoor fan mode Horse power of outdoor unit ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1 *2 ×1 ×1
C
C
C
C
C A A pls pls — — HP [0024]=24 ˚C [0135]=13.5 A [0050]=500 pls [0050]=500 pls [0031]=Mode 31 [0016]=16HP

*1 In the case of group connection, only the header indoor unit data can be displayed. *2 01 ... Only compressor 1 is on 10 ... Only compressor 2 is on 11 ... Both compressor 1 and 2 are on *3 The upper digit of CODE No. indicates the outdoor unit No. U1 outdoor unit (Header unit) U2 outdoor unit (follower unit 1) U3 outdoor unit (follower unit 2) U4 outdoor unit (follower unit 3) – 48 – Target outdoor unit (SMMS-i – Series 4) CODE No. Data Format Unit Remote controller display example

Indoor unit data *2 00 01 02 03 04 05 06 08 Room temperature (in control) Room temperature (Remote controller) Air Temperature (TA) Coil Temperature (TCJ) Coil Temperature (TC2) Coil Temperature (TC1) Discharge temperature (TF) *1 PMV ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×1/10
C ˚C ˚C ˚C ˚C ˚C ˚C pls [0024]=24 ˚C [0150]=1500 pls

09 Air Suction Temperature of direct expansion coil (TSA) *1 ×1 ˚C [0024]=24 ˚C

System unit data FA 0A 0B 0C 0D Outdoor Air Temperature (TOA) *1 Number of connected indoor units Total horse power of connected indoor units Number of connected outdoor units Total horse power of outdoor units ×1 ×1 ×10 ×1 ×10
C — HP — HP [0048]=48 [0415]=41.5HP [0004]=4 [0420]=42HP

CODE No. Data Format Unit Remote controller display example U1 U2 U3 U4

Individual data 1 of outdoor 10 20 30 40 Detection pressure of high-pressure sensor (Pd) Detection pressure of low-pressure sensor ×100 MPa [0123]=1.23 MPa

unit *3 11 21 31 41 ×100 MPa (Ps) 12 22 32 42 Discharge temperature of compressor 1 (Td1) Discharge temperature of compressor 2 ×1 ˚C

13 23 33 43 ×1 ˚C (Td2) 14 24 34 — Discharge temperature of compressor 3 (Td3) ×1 ˚C [0024]=24 ˚C

15 16 17 18 19 1A 1B 1C 1D 1E 1F 25 26 27 28 29 2A 2B 2C 2D 2E 2F 35 36 37 38 39 3A 3B 3C 3D 3E 3F 45 46 — 48 49 4A — 4C 4D — 4F Suction Temperature (TS) Coil Temperature 1 (TE1) Coil Temperature 2 (TE2) Liquid Temperature (TL) Outdoor Temperature (TO) PMV1 + 2 PMV4 Current of compressor 1 (I1) Current of compressor 2 (I2) Current of compressor 3 (I3) Outdoor fan current (IFan) ×1 ×1 ×1 ×1 ×1 ×1 ×1 ×10 ×10 ×10 ×10
C ˚C ˚C ˚C ˚C pls pls A A A A [0050]=500 pls [0135]=13.5 A

*1 The TF/TSA/TOA sensors are equipped only with some types of indoor units. The data does not appear for other types. *2 In the case of group connection, only the header indoor unit data can be displayed. *3 The upper digit of CODE No. indicates the outdoor unit No. *4 [(The upper digit of CODE No.) – 4] indicates the outdoor unit No. 1∗, 5∗ ... U1 outdoor unit (Header unit) 2∗, 6∗ ... U2 outdoor unit (follower unit 1) 3∗, 7∗ ... U3 outdoor unit (follower unit 2) 4∗, 8∗ ... U4 outdoor unit (follower unit 3) *5 Only CODE No. 5• of U1 outdoor unit (Header unit) is displayed. – 49 – CODE No. Data Format Unit Remote controller display example U1 U2 U3 U4

Individual data 2 of outdoor unit *4 50 51 52 53 60 61 62 63 70 71 72 73 80 81 — 83 Rotation of compressor 1 Rotation of compressor 2 Rotation of compressor 3 Outdoor fan mode ×10 ×10 ×10 ×1 rps rps rps Mode [0642]=64.2 rps [0058]=Mode 58

54 64 74 84 Heat sink temperature of compressor IPDU1 ×1 ˚C 55 65 75 85 Heat sink temperature of compressor IPDU2 ×1 ˚C 56 66 76 — Heat sink temperature of compressor IPDU3 ×1 ˚C 57 67 77 87 Heat sink temperature of outdoor fan IPDU ×1 ˚C [0024]=24 ˚C

58 — — — In heat/cool collecting control *5 59 — — — Pressure release *5 5A — — — Discharge temperature release *5 Terminal unit release (U2 / U3 / U4 outdoor unit) *5 5B — — — 0: Normal 1: In collecting control 0: Normal 1: In release control [0010] = In heat collecting control [0001] = In cool collecting control [0010] = In pressure release control [0001] = In discharge temperature release control [0100] = In U2 outdoor unit release control [0010] = In U3 outdoor unit release control [0001] = In U4 outdoor unit release control

5F 6F 7F 8F Horse power of outdoor unit ×1 HP [0016]=16HP

*1 The TF / TSA / TOA sensors are equipped only with some types of indoor units. The data does not appear for other types. *2 In the case of group connection, only the header indoor unit data can be displayed. *3 The upper digit of CODE No. indicates the outdoor unit No. *4 [(The upper digit of CODE No.) – 4] indicates the outdoor unit No. 1∗, 5∗ ... U1 outdoor unit (Center unit) 2∗, 6∗ ... U2 outdoor unit (terminal unit 1) 3∗, 7∗ ... U3 outdoor unit (terminal unit 2) 4∗, 8∗ ... U4 outdoor unit (terminal unit 3) *5 Only CODE No. 5∗ of U1 outdoor unit (Center unit) is displayed. LED display of circuit board 1. D501 (Red) • D501 goes on at the same time when the power supply is turned on. (Goes on with operation of the main microprocessor) • D501 flashes with 1-second interval (every 0.5 second) : When there is no EEPROM or write-in error • D501 flashes with 10-seconds interval (every 5 second) : In DISP mode • D501 flashes with 2-seconds interval (every 1 second) : During setting of function exchange (EEPROM) 2. D403 (Red) • D403 goes on when power is supplied to the remote controller. (ON in hardware) 3. D503 (Yellow): Indoor/Outdoor central control • D503 goes on for 5 seconds at the first half during communication with the central controller. • D503 flashes for 5 seconds with 0.2-second interval at the latter half during communication with outdoor unit. (Goes on for 0.1 second, goes off for 0.1 second) 4. D504 (Green): Remote controller communication • D504 goes on for 5 seconds at the first half during communication with remote controller. (Header unit of group) • In the group indoor unit, D504 flashes for 5 seconds with 0.2-second interval at the latter half during communication between header and follower unit. (Goes on for 0.1 second, goes off for 0.1 second) 5. D14 (Orange) • It flashes while receiving the serial signal from the outdoor unit. (Hardware) 6. D15 (Green) • It flashes while sending the serial signal to the outdoor unit. (Hardware) – 50 – 8. TROUBLESHOOTING 8-1. Overview (1) Before engaging in troubleshooting (a) Applicable models All Super Module Multi (SMMS, SHRM, Mini-SMMS, SMMS-i) models. (Indoor units: MMO-APOOO, Outdoor units: MMY-MAPOOOO*, MCY-MAPOOOHT*) (b) Tools and measuring devices required • Screwdrivers (Philips, flat head), spanners, long-nose pliers, nipper, pin to push reset switch, etc. • Multimeter, thermometer, pressure gauge, etc. (c) Things to check prior to troubleshooting (behaviors listed below are normal) NO. Behavior Possible cause A compressor would not start • Could it just be the 3-minute delay period (3 minutes after compressor shutdown)? 1 • Could it just be the air conditioner having gone thermo OFF? • Could it just be the air conditioner operating in fan mode or put on the timer? • Could it just be the system going through initial communication? 2 • Could it just be cold air discharge prevention control, which is part of heating? An indoor fan would not start change speed for no reason 3 • Could it just be cooling operation under low outside temperature conditions? An outdoor fan would not start or would • Could it just be defrosting operation? An indoor fan would not stop 4 • Could it just be the elimination of residual heat being performed as part of the air conditioner shutdown process after heating operation? start / stop command from a remote controller 5 • Could it just be the air conditioner operation under external or remote The air conditioner would not respond to a controller? (2) Troubleshooting procedure When a fault occurs, proceed with troubleshooting in accordance with the procedure shown below. "E28" error

Fault NOTE Investigate check code displayed on interface P.C. board of header unit Investigate check code displayed on interface P.C. board of relevant follower unit Any other fault Check fault site or faulty part

Rather than a genuine fault (see the List of Check Codes below), the problem could have been caused by a microprocessor malfunction attributable to a poor quality of the power source or an external noise. Check for possible noise sources, and shield the remote controller wiring and signal wires as necessary. – 51 – r o )r e ll o r t n o c e t o m e R ( t r a p y a l p s i d D C L , t i n u r o o dt u o e h t f o dr a o b . C. P . s ut . w o l e b n w o h s s i n o it c n u f s is o n g a i d - fl e s s ih . d e kc e h c e b o t n o i t is o p o t g n i dr o c c a e lb a t g n i w o ll o f e h t n i s t . e lb a t g n i w o ll o f e h t n i ” r e ll o r t n o c l a r t n e c K NI L- C C T & r e ll o r t n o . e lb f f o s e o G : , s e hs a l F : , n o s e o G : ) . D E L g n i hs a l f o w t e r a e r e h t n e h w e t a n r e t l a s i n o i t idn o c g n i hs a l F : ) e t a n r e t l A ( A . D E L g n i hs a l f o w t e r a e r e h t n e h w yl s u o e n a t lu m i s hs a l f D E L o w T : ) yl s u o e n a t lu m i S ( S n o it pi r c s e D n o i t is o p e v it c r e t pa d a kr o w t e n d n a r e ll o r t n o c e t o m e r m o r f n o it a c in u m m o c o N r o o d n i n e e w t e b r o r r e n ) o s l a n o it a c in u m m o c m e t s y s l o r t n o c l a r t n e c o N( t i n u r o o d t u o m o r f n o i t a c i n u m m o c o N r o o d n i n e e w t e b r o r r e n . d e tc e te d s a w s s e r dd a fl e s o t e m a s s s e r dd a n A s s e r . C. P t in u r o o d n i d n a t i k l o r t n o c n o it a c il pp A n e e w t e b r o r r e n o it a c i n u m m o C n o it a c il pp A n e e w t e d r a o b t i n t i n u r o o d n i n i s t in u r e w o ll o f d n a r e da e h n e e w t e b n o it a c in u m m o c r a lu ge R r e d a e h n e e w t e b r o r r e n . e l bi s s o p m i s a w t i n u . d e t c e t e d s a w )J C T ( r o s n e s . p m e t r e gn a hc x e t a e h f o t r o h s /n e pO r o r r e )J C T ( r o s n e s . p m e t . d e t c e t e d s a w )2 C T ( r o s n e s . p m e t r e gn a h c x e t a e h f o t r o h s /n e pO r o r r e )2 C T ( r o s n e s . p m e t r . d e t c e t e d s a w )1 C T ( r o s n e s . p m e t r e gn a hc x e t a e h f o t r o h s /n e pO r o r r e )1 C T ( r o s n e s . p m e t r . d e t c e t e d s a w ) A T ( r o s n e s . p m e t m o o r f o t r o h s /n e pO r o r r e ) ) . d e t c e t e d e b ya m r o r r e r e ht O ( r o r r e M O R PE E r o o d n I r o r r e dr a . pu o r g a n i s t in u r e da e h e l pi t lu m e r e w e r e hT p u o r g r o o d n i n i r e da e . t in u r o o d n i la u di v id n i n i pu o r g o t d e t c e n n o c t in u r o o d n i n a n e v e s i e r e hT . t i n u r o o d n i la u di v id n i ) e di s t in u r o o dt u o t a o s l a d e t c e t e D ( . t e s n u s i s s e r dd a pu o r g r o o d n I . t e s n u s i . t e s n u s i t in u r o o d n i f o y t ic a pa C . t e . d e t a c il pu d s i s s e r dd a m e t s y s l o r t n o c l a r t n e c f o g n i t t e S s s e r dd a m e t s y s l o r t . )08 N C ( r o r r e l a n r e t x e f o t u p n i y b de pp o t s y ll a m r o n b a m e t s yS . ) kc o lr e t n I ( r o o d n i n i t u ) n o it a r e p o y a l e r la m r e h t r o t o m n a F ( . d e t c e t e d s a w n a c C A r o o d n i f o r o r r E . d e t a r e p o h c t i w s t a o lF . d e t c e t e . d e t c e t e d s a w n a f C D r o o d n i f o ). c t e , kc o l , t n e r r u c - r e v O ( r o r r E f o m r a l a ]80 L/ 7 0 L/ 30 L/ 30 E[ y b d e t a r e p o e b t o n n a c t in u r e w o ll o f pu o r G . ti n u r e da e h . r o r r e n o it a c in u m m o c s a hc u e c a fr e t n i e h t n o dn a ) a t s n o it a r e p o e ht y a l t y b r e n o i t i dn o c r i a e n et n o c kc e h c e h t kc c e t o m e r n o y a l p s iD . e lb a t g n i w o ll o f e ht n i ” ya ∗ ( ef e d n ia M h s o it a c i n u m m o c r a lu ge R r e ll o r tn o c e to m e r dn a o it a c in u m m o c r a lu ge R r o o dt u o dn a dd a r o o d n i d e t a c il pu D b r o r r e n o it a c in u m m o C u r o od n i dn a ti k l o r tn oc o it a c in u m m o c r a lu ge R r o o d n i n i r e w o ll o f dn a r e gn a h c x e t a e h r o o d n I e gn a h c x e t a e h r o o d n I e gn a hc x e t a e h r o o d n I A T ( r o s n e S . m e t m o o R o b . C. P r e ht o r o r o o d n I h f o g n it t e s d e t a c il pu D n i e lb a c pu o r g s i e r e hT s s e r dd a pu o r g r o o d n I s n u s i y t ic a p a c r o o d n I n o c l a r t n e c d e t a c il pu D p n i s a w r o r r e l a n r e t x E r o r r e n a f C A r o o d n I d s a w w o lf r e v o r o o d n I r o r r e n a f C D r o o d n I r o r r e ti n u r o o d n i r e ht O s st n et n o c r orr e e ma re p ht eh “ at lp ya al F A A A AS S S S SS S A A AA s d o ht e m g n it o o h s e lb u o r T . 2 - 8 ll o r t n o c e t o m e r l o r t n o c l a r t n e C , r e ll o r t n o c e t o m e r d e r i W ( r e ll o r t n o c e t o m e r e h t n O s i d o t r e dr o n i d e di v o r p s i ) dr a o b . C. P e c a fr e t n i r o o dt u o n o ( t r a p y a l p s i d t n e m g e s - 7 f o n o i t is o p e v it c e fe d r o e lb u o r t e h t e gd u j o t do ht e m e h t , d e r r u c c o e lb u o r t a n e hW C . s t c e t e d e c iv e d hc a e t a h t e d o c kc e h c hc a e f o t s il e h t s w o h s e lb a t g n i w o ll o f e hT o t r e fe R : r e ll o r tn o c l a r tn e c K NI L- C C T r o r e ll o r tn o c e to m e r r o o d n i e h t m o r f kc e hC g n i w o ll o f e h t n i ” t n e m g e s r o o dt u o f o y a l p s i D “ o t r e fe R : t in u r o o dt u o m o r f kc e hC s i d p m a l r e v i e c e R o t r e fe R : r e ll o r t n o c e t o m e r s s e l e r i w f o t i n u r o o d n i m o r f kc e hC ) t in u r o o d n I ( t s il y a l p s i d e d o c kc e hC ] . r o r r e s t c e t e d t i n u r o o d n I[ l p s i d p m a l r e v ie c e R y a l p s i d e d o c kc e hC ) ∗ ( y a l p s i d k c o l B t n e m g e s - 7 r o o d t u O l a r t n e c K N I L - C C T y d a e R r e m i T n o i t a r e p O e d o c y r a i l i x u A r e l l o r t n o c e t o m e r & — — 3 0 E — — 4 0 E . o N t in u r o o d n i d e t a c il pu D 80 E 8 0 E — — 1 1 E — — 8 1 E — — 1 0 F — — 2 0 F — — 3 0 F — — 0 1 F — — 9 2 F — — 3 0L — — 7 0L — 80L 8 0L — — 9 0L — — 0 2L . o N ti n u r o o d n i d e tc e te D 03 L 0 3L — — 1 0 P . o N ti n u r o o d n i d e tc e te D 01 P 0 1 P — — 2 1 P — — 1 3 P n e v e e c iv e d d e t c e t e d e h t o t g n i dr o c c a t n e r e f fi d e b ya m y a l p s i d e d o c kc e h c e hT ) e t o N – 52 – f f o s e o G : , s e hs . D E L g n i hs a l f o w t e r a e r e h t n e h w e t a n r e t l a s i n o i t id n o c g n i hs a l F : . D E L g n i hs a lf o w t e r a e r e ht n e h w yl s u o e n a t lu m i s hs a lf D E L o w T : n o it pi r c s e D e t o m e r f o r e da e h n e h w , t in u r o o d n i m o r f d e v i e c e r e b t o n n a c l a n gi s n e hW ) s r e ll o r t n o c e t o m e r 2 g n id u lc n i ( t e s t o n s a w r e ll o r t n o c t i n u r o o d n i o t t n e s e b t o n n a c l a n gi s n e hW . r e d a e h o t t e s e r e w s r e ll o r t n o c e to m e r ht o b , l o r tn o c r e ll o r tn o c e to m e r - 2 n I ) . n o it a r e p o s e u n it n o c t i n u r e w o ll o f d n a m r a l a h t i w s p o t s r e da e h r o o d n I( n o it pi r c s e D e m a s e r a e r e ht , t n e s e b t o n n a c m e t s y s l o r t n o c l a r t n e c f o la n gi s n e hW ) T E N - I A ( s e c iv e d l a r t n e c e l pi t lu m d e v i e c e r e b t o n n a c m e t s y s l o r t n o c l a r t n e c f o la n gi s n e hW r o r r e ll o r t n o c e t o m e r n o )T E N - I A ( s r e t p a d a kr o w t e n e l pi t lu m e r e w e r e hT . e n il n o it a c i n u m m o c l a r e n e g e ht f o e c a fr e t n i l o r t n o c o t d e t c e n n o c t n e m pi u q e f o r o r r E T E N - I A/ K NI L- C C T o t e v is u lc x e t i n u e s o pr u p r o r r e t in u r e w o ll o f pu o r G ) . o N t i n u h t i w r e ht e g o t d e y a l p s i d s i s li a t e d ]∗ ∗ ∗ [ , r e ll o r t n o c e t o m e r r o F( . r o rr e no a l F : , n o s e o G : ) ∗ ( ) e t a n r e t l A ( A ) yl s u o e n a t lu m i S ( S y a l p s i d p m a l r e v i e c e Ry n o i t is o p e v it c e fe d n ia M ) ∗ ( y a l p s i d kc o lB t n e m ge s - 7 r o o dt u O h s a lF y da e R r e m iT n o it a r e pO e d o c yr a ili x u A r e ll o r tn o c e to m e r , ti n u r e da e h r e ll o r t n o c e to m e r o N r o r r e ) e v i e c e r ( n o it a c in u m m o c — r o r r e )d n e s ( n o it a c i n u m m o c r e ll o r t n o c e t o m e R — r e d a e h r e l l o r t n o c e t o m e r d e t a c i l p u D — y a l p s i d p m a l r e v i e c e Ry n o i t is o p e v it c e fe d n ia M ) ∗ ( y a l p s i d kc o lB t n e m ge s - 7 r o o dt u O h s a lF y d a e R r e m iT n o it a r e pO e d o c yr a il ix u A r o r r e ) d n e s ( n o i t a c i n u m m o c m e t s y s l o r t n o c l a r t n e C d e y a l p s i d t o n s I — r e ) e v i e c e r ( n o i t a c i n u m m o c m e t s y s l o r t n o c l a r t n e C ) r e l l e o s r t u n d o e c r a e t h o s m n I e ( r f o — . s r e t pa d a kr o w t e n e l pi t lu m e r a e r e hT — e s o pr u p - l a r e n e g r o f e c a fr e t n i f o m r a l a de h c t a B l o r t n o c t n e m pi u qe — — r o r r e t i n u r e w o l l o f p u o r G m r a l ) a d h e t i n w o i t t i n n e u m o t e v g o n i b d A r ( o c c A — it a c i n u m m o c s a hc u s s t n e t n o c r o r r e e m a s n e v e e c iv e d d e t c e t e d e ht o t g n i dr o c c a t n e r e f fi d

] . r o r r e s t c e t e d r e ll o r t n o c e t o m e R[ a l p s i d e d o c kc e hC r e ll o r t n o c e to m e R — 1 0 E — 2 0 E — 9 0 E ] . r o r r e s t c e t e d r e ll o r t n o c l a r t n e C[ a l p s i d e d o c kc e hC l a r t n e c K NI L- C CT — 5 0 C — 6 0 C — — — 2 1 C — 0 3 P e b ya m y a l p s i d e d o c kc e h c e hT ) e t o N

– 53 –

List of check codes (outdoor unit) (Errors detected by SMMS-i outdoor interface - typical examples) Check code Display of receiving unit Indicator light block IPDU: Intelligent Power Drive Unit (Inverter P.C. board) :Lighting, : Flashing, : Goes off ALT.: Flashing is alternately when there are two flashing LED SIM: Simultaneous flashing when there are two flashing LED

Typical fault site Description of error Outdoor 7-segment display TCC-LINK central control

or main remote OperationTimer Ready

Sub-code Flash controller display E06 Number of indoor units from which signal is received normally E06 Dropping out of indoor unit Indoor-outdoor Indoor unit initially communicating normally fails to return signal (reduction in number of indoor units connected). Signal cannot be transmitted to indoor units

E07 – (E04) communication circuit error (→ indoor units left without communication from outdoor unit).

E08 Duplicated indoor address (E08) Duplicated indoor address More than one indoor unit is assigned same address (also detected at indoor unit end). • Indoor automatic address setting is started while

E12 01: Indoor-outdoor communication 02: Outdoor-outdoor communication E12 Automatic address starting error Indoor unit not found automatic address setting for equipment in other refrigerant line is in progress. • Outdoor automatic address setting is started while automatic address setting for indoor units is in progress. Indoor unit fails to communicate while automatic

E15 – E15 during automatic address setting address setting for indoor units is in progress.

01: Number of units connected E16 Too many indoor units Combined capacity of indoor units is too large

E16 00: Overloading connected / overloading (more than 135 % of combined capacity of outdoor units).

02: Two or more header units E19 Error in number of outdoor There is no or more than one outdoor header unit

E19 00: No header unit 01: Connection of outdoor unit from header units in one refrigerant line. Indoor unit from other refrigerant line is detected

E20 other refrigerant line 02: Connection of indoor unit from other refrigerant line E20 Connection to other refrigerant line found during automatic address setting Outdoor-outdoor while indoor automatic address setting is in progress. Signal cannot be transmitted to other outdoor

E23 – E23 communication transmission error units.

E25 – E25 Duplicated follower outdoor address signal is not received normally E26 Dropping out of outdoor There is duplication in outdoor addresses set manually. Follower outdoor unit initially communicating

E26 Address of outdoor unit from which unit normally fails to do so (reduction in number of follower outdoor units connected). Outdoor header unit detects fault relating to

E28 Detected outdoor unit No. E28 Outdoor follower unit error A3-IPDU Fan follower outdoor unit (detail displayed on follower outdoor unit).

Fan A3-IPDU

01 1 2 O 3 IPDU 0A 1 2 O 3 IPDU O

02 03 O O O 0B 0C O O O O O

E31 E31 IPDU communication error There is no communication between IPDUs (P.C.

04 05 06 O O O O O 0D 0E 0F O O O O O O O O O O boards) in inverter box.

07 08 09 O O O O O O Circle (O): Faulty IPDU Outdoor discharge Outdoor discharge temperature sensor (TD1) has

F04 – F04 ALT F05 – F05 ALT F06 01: TE1 02: TE2 F06 ALT temperature sensor (TD1) error Outdoor discharge temperature sensor (TD2) error Outdoor heat exchanger temperature sensor (TE1, TE2) error been open / short-circuited. Outdoor discharge temperature sensor (TD2) has been open / short-circuited. Outdoor heat exchanger temperature sensors (TE1, TE2) have been open / short-circuited.

F07 – F07 ALT Outdoor liquid temperature sensor (TL) error Outdoor outside air Outdoor liquid temperature sensor (TL) has been open / short-circuited. Outdoor outside air temperature sensor (TO) has

F08 – F08 ALT F11 – F11 temperature sensor (TO) error been open / short-circuited.

– 54 – Check code Display of receiving unit Indicator light block Typical fault site Description of error Outdoor 7-segment display TCC-LINK central control or main remote Sub-code Flash Operation Timer Ready controller display

F12 – F12 ALT 01: Compressor 1 Outdoor suction temperature sensor (TS1) error Outdoor IGBT built-in Outdoor suction temperature sensor (TS1) has been open / short-circuited. Open-circuit or short-circuit of the outdoor IGBT

F13 02: Compressor 2 03: Compressor 3 F13 ALT temperature sensor (TH) error Outdoor temperature built-in temperature sensor (TH) was detected. Wiring error in outdoor temperature sensors (TE1,

F15 – F15 ALT sensor (TE1, TL) wiring error TL) has been detected.

F16 – F16 ALT Outdoor pressure sensor (Pd, Ps) wiring error Outdoor discharge Wiring error in outdoor pressure sensors (Pd, Ps) has been detected. Outdoor discharge temperature sensor (TD3) has

F22 – F22 ALT temperature sensor (TD3) error been open / short-circuited.

F23 – F23 ALT Low pressure sensor (Ps) error Output voltage of low pressure sensor (Ps) is zero.

F24 – F24 ALT High pressure sensor (Pd) error F31 – F31 SIM Outdoor EEPROM error 01: Compressor 1 Output voltage of high pressure sensor (Pd) is zero or provides abnormal readings when compressors have been turned off. Outdoor EEPROM is faulty (alarm and shutdown for header unit and continued operation for follower unit) Overcurrent of the inverter current (Idc) detection

H01 H02 H03 H04 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 01: Compressor 1 02: Compressor 2 03: Compressor 3 H01 H02 H03 H05 Compressor breakdown Compressor error (Lock) Current detection circuit error Compressor 1 case thermo activation Outdoor discharge circuit was detected. Compressor lock was detected. Current error was detected while the compressor was stopped. Compressor 1 case thermo was activated for protection. Wiring / installation error or detachment of outdoor

H05 – H05 temperature sensor (TD1) wiring error discharge temperature sensor (TD1) has been detected.

H06 – H06 Activation of low-pressure protection H07 – H07 Activation of low-pressure protection 01: TK1 sensor error Low pressure (Ps) sensor detects abnormally low operating pressure. Temperature sensor for oil level detection (TK1-5) detects abnormally low oil level.

H08 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error 05: TK5 sensor error H08 Error in temperature sensor for oil level detection (TK1-5) Temperature sensor for oil level detection (TK1-5) has been open / short-circuited.

H14 – H14 H15 – H15 01: TK1 oil circuit error Compressor 2 case thermo activation Outdoor discharge temperature sensor (TD2) wiring error Compressor 2 case thermo was activated for protection. Wiring / installation error or detachment of outdoor discharge temperature sensor (TD2) has been detected.

H16 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error 05: TK5 oil circuit error H16 Oil level detection circuit error Outdoor discharge No temperature change is detected by temperature sensor for oil level detection (TK1-5) despite compressor having been started. Wiring / installation error or detachment of outdoor

H25 – H25 temperature sensor (TD3) wiring error discharge temperature sensor (TD3) has been detected.

L04 – L04 SIM Duplicated outdoor refrigerant line address Duplicated priority indoor Identical refrigerant line address has been assigned to outdoor units belonging to different refrigerant piping systems. More than one indoor unit has been set up as

L06 Number of priority indoor units (check code L05 or L06 depending on individual unit) L05 SIM L06 SIM unit (as displayed on priority indoor unit) Duplicated priority indoor unit (as displayed on indoor unit other than priority indoor unit) priority indoor unit. More than one indoor unit has been set up as priority indoor unit.

– 55 – Check code Display of receiving unit Typical fault site Description of error Outdoor 7-segment display TCC-LINK Indicator light block central control

Sub-code or main remote controller display Flash Operation Timer Ready

L08 (L08) SIM Indoor group address not Address setting has not been performed for one or

– SIM set more indoor units (also detected at indoor end).

– L10 L10 SIM Outdoor capacity not set Outdoor unit capacity has not been set (after P.C. board replacement). L17 L17 SIM Outdoor model Old model outdoor unit (prior to 3 series) has been

– incompatibility error connected.

L18 L18 SIM FS (Flow Selector) unit Cooling / heating cycle error resulting from piping

– error Too many outdoor units error is detected. More than four outdoor units have been

L28 L28 connected. SIM connected SMMS (Series 1) 01: A3-IPDU1 error 02: A3-IPDU2 error 03: A3-IPDU1/A3-IPDU2 error 04: Fan IPDU error 05: A3-IPDU1 + Fan IPDU error 06: A3-IPDU2 + Fan IPDU error 07: All IPDU error SMMS-i (Series 4)

A3-IPDU Fan A3-IPDU Fan There are insufficient number of IPDUs (P.C. SIM boards) in inverter box. Error in number of IPDUs

L29 L29 3 IPDU

01 1 2 O IPDU 0A 1 2 O 3 O

02 03 04 05 06 O O O O O O O O 0B 0C 0D 0E 0F O O O O O O O O O O O O O O O

07 08 09 O O O O O O Circle (O): Faulty IPDU

L30 Detected indoor unit No. (L30) SIM Indoor external error input (interlock) Indoor unit has been shut down for external error input in one refrigerant line (detected by indoor unit).

P03 – P0301: Compressor 1 ALT Outdoor discharge (TD1) temperature error High-pressure SW Outdoor discharge temperature sensor (TD1) has detected abnormally high temperature.

P04 P04 02: Compressor 2 03: Compressor 3 ALT activation High-pressure SW was activated.

00: Open phase detected Open phase / power failure Open phase is detected when power is turned on.

01: Compressor 1 ALT P05 P05 02: Compressor 2 03: Compressor 3 Inverter DC voltage (Vdc) error MG-CTT error Inverter DC voltage is too high (overvoltage) or too low (undervoltage). 01: Compressor 1 P07 P07 02: Compressor 2 03: Compressor 3 ALT Heat sink overheating error Temperature sensor built into IGBT (TH) detects overheating. Indoor unit has been shutdown in one refrigerant P10 Indoor unit No. detected (P10) ALT Indoor unit overflow line due to detection of overflow (detected by indoor unit). P13 – P13 01: TS condition ALT Outdoor liquid backflow detection error State of refrigerant cycle circuit indicates liquid backflow operation. Outdoor suction temperature sensor (TS1) detects

P15 02: TD condition P15 ALT Gas leak detection sustained and repeated high temperatures that exceed standard value.

P17 – P17 ALT Outdoor discharge (TD2) temperature error Outdoor discharge temperature sensor (TD2) detects abnormally high temperature.

P18 – P18 ALT Outdoor discharge (TD3) temperature error Outdoor discharge temperature sensor (TD3) detects abnormally high temperature.

P19 P19 Outdoor unit No. detected ALT P20 – P20 ALT 4-way valve reversing error Activation of high-pressure protection Abnormality in refrigerating cycle is detected during heating operation. High pressure (Pd) sensor detects high pressure that exceeds standard value. MG-CTT: Magnet contactor

– 56 – (Errors detected by IPDU featuring in SMMS-i standard outdoor unit - typical examples) Check code Display of receiving unit

Outdoor 7-segment display TCC-LINK central control Indicator light block Typical fault site Description of error

Sub-code 01: Compressor 1 02: Compressor 2 or main remote controller display OperationTimer Ready Flash Error in temperature Temperature sensor built into indoor IGBT (TH)

F13 F13 03: Compressor 3 ALT sensor built into indoor IGBT (TH) has been open / short-circuited.

01: Compressor 1 H01 H01 02: Compressor 2 03: Compressor 3 01: Compressor 1 H02 H02 02: Compressor 2 03: Compressor 3 Compressor breakdown Inverter current (Idc) detection circuit detects overcurrent. Compressor error (lockup) Compressor lockup is detected

01: Compressor 1 H03 H03 02: Compressor 2 03: Compressor 3 01: Compressor 1 Current detection circuit error Activation of high-pressure Abnormal current is detected while inverter compressor is turned off. P04 P04 02: Compressor 2 03: Compressor 3 ALT SW High-pressure SW is activated.

P07 P07 ALT Heat sink overheating error Temperature sensor built into IGBT (TH) detects overheating.

P20 P20 ALT High-pressure protection activation SMMS (Series 1) 04: Rotation difference error 06: Maximum rotation exceeded 08: Out of step 0A: Idc activation 0C: Fan lock 0d: Lock 0E: Sync error 0F: Control error High-pressure (Pd) sensor detected a value over the criteria. P22 P22 ALT SMMS-i (Series 4) 0..: IGBT circuit 1..: Position detection circuit error 3..: Motor lockup error 4..: Motor current detection C..: TH sensor error D..: TH sensor error E..: Inverter DC voltage error (outdoor fan) Note: Although letters 0 to F appear at locations indicated by "∗", please ignore them. Outdoor fan IPDU error Outdoor fan IPDU detects error.

01: Compressor 1 P26 P26 02: Compressor 2 03: Compressor 3 01: Compressor 1 P29 P29 02: Compressor 2 03: Compressor 3 ALT ALT Activation of G-Tr (IGBT) short-circuit protection Compressor position detection circuit error Short-circuit protection for compressor motor driver circuit components is activated (momentary overcurrent). Compressor motor position detection error is detected.

Note: The above check codes are examples only, and different check codes may be displayed depending on the outdoor unit configuration (e.g. a Super heat recovery multi system). For details, see the service manual for the outdoor unit. – 57 – 8-3. Troubleshooting based on information displayed on remote controller Using main remote controller (RBC-AMT32E) (1) Checking and testing When a fault occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation. If the display has already disappeared, access

error history by following the procedure described below. (2) Error history Check codeIndoor unit No. in which fault has occurred

The error history access procedure is described below (up to four errors stored in memory). Error history can be accessed regardless of whether the air conditioner is in operation or shut down. <Procedure> To be performed when system at rest 1 Invoke the SERVICE CHECK mode by pressing the + SET buttons simultaneously and holding for at least 4 seconds. The letters “ SERVICE CHECK” light up, and the check code “01” is displayed, indicating the error history. This is accompanied by the indoor unit No. to which the error history is related and a check code. TEMP. ON / OFF 2 To check other error history items, press the TEMP. 2 button to select another check code. TIMER SET FAN MODE Check code “01” (latest) → Check code “04” (oldest) VENT SAVE TIME

Note: Error history contains four items. 3 When the button is pushed, normal display is TEST FILTER RESET SET CL SWING/FIX UNIT LOUVER

restored. REQUIREMENT 3 1 Normal display is restored. Steps to follow 1 2 3

Do not push the CL button as it would erase the whole error history of the indoor unit. How to read displayed information <7-segment display symbols> 01 23456789AbCdEFHJLP <Corresponding alphanumerical letters> 0 1 2 3 4 5 6 7 8 9 A b C d E F H J L P – 58 – Using TCC-LINK central control remote controller (TCB-SC642TLE2) (1) Checking and testing

When a fault occurs to an air conditioner, a check code and indoor unit No. are displayed on the display window of the remote controller. Check codes are only displayed while the air conditioner is in operation. If the display has already disappeared, access error history by following the procedure described below. (2) Error history Display of Unit No. Display of check code UNIT No. TEST 3 - 9 p - 10 Alternate blinking R.C. No.

The error history access procedure is described below (up to four errors stored in memory). Error history can be accessed regardless of whether the air conditioner is in operation or shut down. 1 Push the + SET buttons simultaneously and hold for at least 4 seconds. 2 The letters “ SERVICE CHECK” light up, and the check code “01” is displayed. 3 When a group No. is selected (blinking), if there is an error history, the UNIT No. and the latest error history information are displayed alternately. * During this procedure, the temperature setting feature is unavailable. Display of Unit No. Display of check code UNIT No. TEST 3 - 9 p - 10 Alternate blinking R.C. No. 4 To check other error history items, push the TEMP. button to select another check code (01- 04.). 5 To check check code relating to another group, push (ZONE) and (GROUP) buttons to select a group No. Do not push the CL button as it would erase the whole error history of the selected group. 6 To finish off the service check, push the button. – 59 – Using indoor unit indicators (receiving unit light block) (wireless type) To identify the check code, check the 7-segment display on the header unit. To check for check codes not displayed on the 7-segment display, consult the “List of Check Codes (Indoor Unit)” in “8-2. Troubleshooting method”. : 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 ⎫⎪⎬⎪⎭ ⎫⎬⎭ Communication interruption between receiving unit and indoor unit

Operation Timer Ready Flash Operation Timer Ready Alternate flash Operation Timer Ready Alternate flash E08 Duplicated indoor unit No. (Address) Setup error Duplicated header units of remote controller ⎫⎬⎭ E09 E11 Communication error between Application control kit and 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 E06 No. of 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 center 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 E26 connected outdoor units E28 Follower unit error E31 IPDU communication 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 P05 Outdoor unit open phase error was detected, negative phase error was detected Outdoor unit heat sink overheat error: Heat radiation error of electric part (IGBT) P07 in outdoor unit P15 Gas leak was detected: Short of refrigerant charge amount P17 Outdoor unit discharge temp. (TD2) 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.

– 60 –

Lamp indication Check code Cause of trouble occurrence

Operation Timer Ready F01 ⎫⎪⎪⎬⎪⎪⎭ Heat exchanger sensor (TCJ) error

Alternate flash Heat exchanger sensor (TC2) error Temp. sensor error in indoor unit Heat exchanger sensor (TC1) error F02 F03 Room temp. sensor (TA) error F10

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

Alternate flash Liquid temp. sensor (TL) error Outdoor unit temp. sensor error F07 Outside temp. sensor (TO) error F08 Suction temp. sensor (TS1) error F12 Heat sink sensor (TH) error F13 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 ⎫⎬ F23 Low pressure sensor (Ps) error Pressure sensor error in outdoor unit F24

Operation Timer Ready Simultaneous flash Operation Timer Ready F29 H01 High pressure sensor (Pd) error ⎭ Indoor unit EEPROM error 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 Current detection circuit error H03 H04 Compressor 1 case thermo operation 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) error H14 Compressor 2 chase thermo operation: Protective device of outdoor unit operated. H16 Oil face detection circuit system error: Outdoor unit TK1, TK2, TK3, TK4 circuit system error 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 COOL/HEAT select unit system 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

– 61 – 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)

– 62 – 8-4. Check codes displayed on remote controller and SMMS outdoor unit (7-segment display on I/F board) and locations to be checked For other types of outdoor units, refer to their own service manuals. Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

E01 — — E02 — — Remote controller Remote controller Indoor-remote controller communication error (detected at remote controller end) Remote controller transmission error Stop of corresponding unit Stop of corresponding unit Communication between indoor P.C. board and remote controller is disrupted. Signal cannot be transmitted from remote controller to indoor unit. • Check remote controller inter-unit tie cable (A / B). • Check for broken wire or connector bad contact. • Check indoor power supply. • Check for defect in indoor P.C. board. • Check remote controller address settings (when two remote controllers are in use). • Check remote controller P.C. board. • Check internal transmission circuit of remote controller. --- Replace remote controller as necessary.

E03 — — E04 — — Indoor unit Indoor-remote controller communication error (detected at indoor end) Indoor unit Indoor-outdoor communication circuit error (detected at indoor end) Stop of corresponding unit Stop of corresponding unit There is no communication from remote controller (including wireless) or network adaptor. Indoor unit is not receiving signal from outdoor unit. • Check remote controller and network adaptor wiring. • Check order in which power was turned on for indoor and outdoor units. • Check indoor address setting. • Check indoor-outdoor tie cable. • Check outdoor termination resistance setting (SW30, Bit 2).

No. of indoor units from which signal is received normally E06 E06 I/F Dropping out of indoor unit I/F Indoor-outdoor All stop Indoor unit initially communicating normally fails to return signal for specified length of time. All stop Signal cannot be transmitted • Check power supply to indoor unit. (Is power turned on?) • Check connection of indoor-outdoor communication cable. • Check connection of communication connectors on indoor P.C. board. • Check connection of communication connectors on outdoor P.C. board. • Check for defect in indoor P.C. board. • Check for defect in outdoor P.C. board (I/F). • Check outdoor termination

— E07 — Duplicated indoor address E08 E08 Indoor unit I/F communication circuit error (detected at outdoor end) Duplicated indoor address from outdoor to indoor units for 30 seconds continuously. All stop More than one indoor unit is assigned same address. resistance setting (SW30, Bit 2). • Check connection of indoor-outdoor communication circuit. • Check indoor addresses. • Check for any change made to remote controller connection (group / individual) since indoor address setting. Remote controller E09 — — Duplicated master remote controller Stop of corresponding unit In two remote controller configuration (including wireless), both controllers are set up as master. (Header indoor unit is shut down with alarm, while follower indoor units continue operating.) • Check remote controller settings. • Check remote controller P.C. boards. E10 — — Indoor unit Indoor inter-MCU communication error Stop of corresponding unit Communication cannot be established / maintained upon turning on of power or during communication. • Check for defect in indoor P.C. board. E12 E12 01: Indoor-outdoor communication 02: Outdooroutdoor communication I/F Automatic address starting error I/F Indoor unit not found during automatic All stop • Indoor automatic address setting is started while automatic address setting for equipment in other refrigerant line is in progress. • Outdoor automatic address setting is started while automatic address setting for indoor units is in progress. All stop Indoor unit cannot be detected after indoor automatic address setting is started. • Perform automatic address setting again after disconnecting communication cable to that refrigerant line. • Check connection of indoor-outdoor communication line. • Check for error in indoor power

E15 E15 — address setting supply system. • Check for noise from other devices. • Check for power failure. • Check for defect in indoor P.C. board.

– 63 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

00: Overloading 01-: No. of units connected E16 E16 I/F Too many indoor units connected All stop • Combined capacity of indoor units exceeds 135% of combined capacity of outdoor units. Note: If this code comes up after backup setting for outdoor unit failure is performed, perform “No overloading detected” setting. < “No overloading detected” setting method> Turn on SW09/Bit 2 on I/F P.C. board of outdoor header unit. • More than 48 indoor units are connected. • Check capacities of indoor units connected. • Check combined HP capacities of indoor units. • Check HP capacity settings of outdoor units. • Check No. of indoor units connected. • Check for defect in outdoor P.C. board (I/F).

E18 — — Indoor unit Error in communication between indoor header and follower units Stop of corresponding unit Periodic communication between indoor header and follower units cannot be maintained. • Check remote controller wiring. • Check indoor power supply wiring. • Check P.C. boards of indoor units.

E19 E19 E20 E20 00: No header unit 02: Two or more header units 01: Connection of outdoor unit from other line 02: Connection of indoor unit from other line I/F Error in number of outdoor header units I/F Connection to other line found during automatic address setting I/F Outdoor outdoor communication transmission error All stop • There is more than one outdoor header unit in one line. • There is no outdoor header unit in one line. All stop Equipment from other line is found to have been connected when indoor automatic address setting is in progress. All stop Signal cannot be transmitted to other outdoor units for at least 30 seconds continuously. Outdoor header unit is outdoor unit to which indoor outdoortie cable (U1,U2) is connected. • Check connection of indoor-outdoor communication line. • Check for defect in outdoor P.C. board (I/F). Disconnect inter-line tie cable in accordance with automatic address setting method explained in “Address setting” section. • Check power supply to outdoor units. (Is power turned on?) • Check connection of tie cables between outdoor units for bad contact or broken wire.

E23 E23 — E25 E25 — Address of outdoor unit from which signal is not received normally E26 E26 Detected outdoor unit No. E28 E28 I/F Duplicated follower outdoor address I/F Dropping out of outdoor unit I/F Outdoor follower unit error All stop There is duplication in outdoor addresses set manually. All stop Outdoor unit initially communicating normally fails to return signal for specified length of time. All stop Outdoor header unit receives error code from outdoor follower unit. • Check communication connectors on outdoor P.C. boards. • Check for defect in outdoor P.C. board (I/F). • Check termination resistance setting for communication between outdoor units. Note: Do not set outdoor addresses manually. • Backup setting is being used for outdoor units. • Check power supply to outdoor unit. (Is power turned on?) • Check connection of tie cables between outdoor units for bad contact or broken wire. • Check communication connectors on outdoor P.C. boards. • Check for defect in outdoor P.C. board (I/F). • Check check code displayed on outdoor follower unit. <Convenient functions> If SW04 is pressed and held for at least 1 second while [E28] is displayed on the 7-segmentdisplay of outdoor header unit, the fan of the outdoor unit that has been shut down due to an error comes on. If SW04 and SW05 are pressed simultaneously, the fans of normal outdoor units come on. To stop the fan or fans, press SW05 on its own.

– 64 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

E31 E31 SMMS (Series 1) 01: A3-IPDU1 error 02: A3-IPDU2 error 03: A3-IPDU1/ A3- IPDU2 error 04: Fan IPDU error 05: A3-IPDU1 + Fan IPDU error 06: A3-IPDU2 + Fan IPDU error 07: All IPDU error or Communication error between IPDU and I/F circuit board or Outdoor I/F circuit board error SMM-i (Series 4) A3-IPDUFan I/F IPDU communication error All stop Communication is disrupted between IPDUs (P.C. boards) in inverter box. • Check wiring and connectors involved in communication between IPDU-I/F P.C. board for bad contact or broken wire. • Check for defect in outdoor P.C. board (I/F, A3-IPDU or Fan IPDU). • Check for external noise.

IPDU 01 1 O 2 3

02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 80 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O

Symbol O signifies site of IPDU error. F01 — — F02 — — F03 — — Indoor unit Indoor TCJ sensor error Indoor unit Indoor TC2 sensor error Indoor unit Indoor TC1 sensor error Stop of corresponding unit Stop of corresponding unit Stop of corresponding unit Sensor resistance is infinity or zero (open / short circuit). Sensor resistance is infinity or zero (open / short circuit). Sensor resistance is infinity or zero (open / short circuit). • Check connection of TCJ sensor connector and wiring. • Check resistance characteristics of TCJ sensor. • Check for defect in indoor P.C. board. • Check connection of TC2 sensor connector and wiring. • Check resistance characteristics of TC2 sensor. • Check for defect in indoor P.C. board. • Check connection of TC1 sensor connector and wiring. • Check resistance characteristics of TC1 sensor. • Check for defect in indoor P.C. board.

F04 F04 — F05 F05 — I/F TD1 sensor error All stop Sensor resistance is infinity or zero (open / short circuit). I/F TD2 sensor error All stop Sensor resistance is infinity or zero (open / short circuit). • Check connection of TD1 sensor connector. • Check resistance characteristics of TD1 sensor. • Check for defect in outdoor P.C. board (I/F). • Check connection of TD2 sensor connector. • Check resistance characteristics of TD2 sensor. • Check for defect in outdoor P.C. board (I/F).

F06 F06 01: TE1 sensor error 02: TE2 sensor error I/F TE1/TE2 sensor error All stop Sensor resistance is infinity or zero (open / short circuit). • Check connection of TE1/TE2 sensor connectors. • Check resistance characteristics of TE1/TE2 sensors. • Check for defect in outdoor P.C. board (I/F).

F07 F07 — I/F TL sensor error All stop Sensor resistance is infinity or zero (open / short circuit). • Check connection of TL sensor connector. • Check resistance characteristics of TL sensor. • Check for defect in outdoor P.C. board (I/F).

– 65 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations) F08 F08 — I/F TO sensor error All stop Sensor resistance is infinity or zero (open / short circuit). • Check connection of TO sensor connector. • Check resistance characteristics of TO sensor. • Check for defect in outdoor P.C. board (I/F).

F10 — — F11 — — Indoor unit Indoor TA sensor error Indoor unit Indoor TF sensor error Stop of corresponding unit Stop of corresponding unit Sensor resistance is infinity or zero (open / short circuit). Sensor resistance is infinity or zero (open / short circuit). • Check connection of TA sensor connector and wiring. • Check resistance characteristics of TA sensor. • Check for defect in indoor P.C. board. • Check connection of TF sensor connector and wiring. • Check resistance characteristics of TF sensor. • Check for defect in indoor P.C. board.

F12 F12 — 01: Compressor 1 side I/F TS1 sensor error All stop Sensor resistance is infinity or zero (open / short circuit). IPDU TH sensor error All stop Sensor resistance is infinity or zero (open / short circuit). • Check connection of TS1 sensor connector. • Check resistance characteristics of TS1 sensor. • Check for defect in outdoor P.C. board (I/F). • Defect in IGBT built-in temperature sensor → Replace A3-IPDU P.C.

F13 — 02: Compressor 2 side 03: Compressor 3 side I/F Outdoor temperature All stop During compressor operation in HEAT mode, TE1 board. • Check installation of TE1 and TL sensors. F15 F15 — F16 F16 — sensor wiring error (TE1, TL) I/F Outdoor pressure sensor wiring error (Pd, Ps) continuously provides temperature reading higher than indicated by TL by at least specified margin for 3 minutes or more. All stop Readings of high-pressure Pd sensor and lowpressure Ps sensor are switched. Output voltages of both sensors are zero. • Check resistance characteristics of TE1 and TL sensors. • Check for outdoor P.C. board (I/F) error. • Check connection of highpressure Pd sensor connector. • Check connection of lowpressure Ps sensor connector. • Check for defect in pressure sensors Pd and Ps. • Check for error in outdoor P.C. board (I/F). • Check for deficiency in compressive output of compressor.

F22 F22 — F23 F23 — F24 F24 — I/F TD3 sensor error All stop Sensor resistance is infinity or zero. (open / short circuit) I/F Ps sensor error All stop Output voltage of Ps sensor is zero. I/F Pd sensor error All stop Output voltage of Pd sensor is zero (sensor open-circuited). Pd > 4.15 MPa despite compressor having been turned off. • Check connection of TD3 sensor connector. • Check resistance characteristics of TD3 sensor. • Check for defect in outdoor P.C. board (I/F). • Check for connection error involving Ps sensor and Pd sensor connectors. • Check connection of Ps sensor connector. • Check for defect in Ps sensor. • Check for deficiency in compressive output of compressor. • Check for defect in 4-way valve. • Check for defect in outdoor P.C. board (I/F). • Check for defect in SV4 circuit. • Check connection of Pd sensor connector. • Check for defect in Pd sensor. • Check for defect in outdoor P.C. board (I/F). F29 — — Indoor unit Other indoor error Stop of corresponding unit Indoor P.C. board does not operate normally. • Check for defect in indoor P.C. board (faulty EEPROM)

F31 F31 — 01: Compressor 1 side I/F Outdoor EEPROM error IPDU Compressor breakdown All stop *1 Outdoor P.C. board (I/F) does not operate normally. All stop Inverter current detection circuit detects overcurrent and • Check power supply voltage. • Check power supply noise. • Check for defect in outdoor P.C. board (I/F). • Check power supply voltage. (380-415V ± 10 %). H01 H01 02: Compressor 2 side 03: Compressor 3 side shuts system down. • Check for defect in compressor. • Check for possible cause of abnormal overloading. • Check for defect in outdoor P.C. board (A3-IPDU).

*1 Total shutdown in case of header unit Continued operation in case of follower unit – 66 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

H02 H02 H03 H03 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side IPDU Compressor error (lockup) MG-CTT error IPDU Current detection circuit error I/F TD1 sensor miswiring All stop Overcurrent is detected several seconds after startup of inverter compressor. All stop Current flow of at least specified magnitude is detected despite inverter compressor having been shut turned off. All stop Discharge temperature of compressor 1 (TD1) does not • Check for defect in compressor. • Check power supply voltage. (380-415V ± 10 %). • Check compressor system wiring, particularly for open phase. • Check connection of connectors / terminals on A3-IPDU P.C. board. • Check conductivity of case heater. (Check for refrigerant entrapment inside compressor.) • Check for defect in outdoor P.C. board (A3-IPDU). • Check outdoor MG-CTT. • Check current detection circuit wiring. • Check defect in outdoor P.C. board (A3-IPDU). • Check installation of TD1 sensor. • Check connection of TD1 sensor

H05 H05 — H06 H06 — H07 H07 — (incomplete insertion) I/F Activation of low pressure protection I/F Low oil level protection increase despite compressor being in operation. All stop Low-pressure Ps sensor detects operating pressure lower than 0.02 MPa. All stop Operating compressor detects continuous state of low oil level for about 2 hours. connector and wiring. • Check resistance characteristics of TD1 sensor. • Check for defect in outdoor P.C. board (I/F). • Check service valves to confirm full opening (both gas and liquid sides). • Check outdoor PMVs for clogging (PMV1, 2). • Check for defect in SV2 or SV4 circuits. • Check for defect in lowpressure Ps sensor. • Check indoor filter for clogging. • Check valve opening status of indoor PMV. • Check refrigerant piping for clogging. • Check operation of outdoor fan (during heating). • Check for insufficiency in refrigerant quantity. <All outdoor units in corresponding line to be checked> • Check balance pipe service valve to confirm full opening. • Check connection and installation of TK1, TK2, TK3, TK4, and TK5 sensors. • Check resistance characteristics of TK1, TK2, TK3, TK4, and TK5 sensors. • Check for gas or oil leak in same line. • Check for refrigerant entrapment inside compressor casing. • Check SV3A, SV3B, SV3C, SV3D, SV3E, and SV3F valves for defect. • Check oil return circuit of oil separator for clogging. • Check oil equalizing circuit for clogging. MG-CTT: Magnet contactor

– 67 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

01: TK1 sensor error 02: TK2 sensor error 03: TK3 sensor error 04: TK4 sensor error 05: TK5 sensor error H08 H08 I/F Error in temperature sensor for oil level detection I/F Compressor 2 case thermo activation All stop Sensor resistance is infinity or zero (open / short circuit). All stop Sensor resistance is infinity or zero (open / short circuit). All stop Sensor resistance is infinity or zero (open / short circuit). All stop Sensor resistance is infinity or zero (open / short circuit). All stop Sensor resistance is infinity or zero (open / short circuit). All stop Compressor 2 case thermo was activated. • Check connection of TK1 sensor connector. • Check resistance characteristics of TK1 sensor. • Check for defect in outdoor P.C. board (I/F). • Check connection of TK2 sensor connector. • Check resistance characteristics of TK2 sensor. • Check for defect in outdoor P.C. board (I/F). • Check connection of TK3 sensor connector. • Check resistance characteristics of TK3 sensor. • Check for defect in outdoor P.C. board (I/F). • Check connection of TK4 sensor connector. • Check resistance characteristics of TK4 sensor. • Check for defect in outdoor P.C. board (I/F). • Check connection of TK5 sensor connector. • Check resistance characteristics of TK5 sensor. • Check for defect in outdoor P.C. board (I/F). • Check Compressor 2 case thermo circuit. (Connector, Wiring, Circuit board) • Open and check the service valve. (Gas side, Liquid side) • Check the outdoor PMV clogging H14 H14 — H15 H15 — I/F TD2 sensor miswiring (incomplete insertion) All stop Air discharge temperature of (TD2) does not increase despite compressor 2 being in operation. (PMV1, 2). • Check the SV42 circuit. • Check the SV4 circuit (SV41 / 42 miswiring). • Check the opening status of indoor PMV. • Check the 4-way valve error. • Check the refrigerant shortage. • Check installation of TD2 sensor. • Check connection of TD2 sensor connector and wiring. • Check resistance characteristics of TD2 sensor. • Check for defect in outdoor P.C. board (I/F).

– 68 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

SMMS (1 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error I/F Oil detection circuit error All stop The temperature change of TK1 cannot be detected even after Compressor 1 starts operating. • Check the TK1 sensor installation. • Check the TK1 sensor resistant characteristics. • Check the misconnection of TK1, TK2, TK3, or TK4. • Check the SV3E valve error. • Check the oil circuit capillary clogging and non-return valve error. • Check the hibernating refrigerant in compressor.

H16 H16 SMMS I/F (1 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error SMMS-i I/F (4 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error 05: TK5 oil circuit error Oil detection circuit error Oil level detection circuit error All stop The temperature change of TK2 cannot be detected even after Compressor 2 starts operating. The temperature change of TK3 cannot be detected even after Compressor 3 starts operating. The temperature change of TK4 cannot be detected even after Compressor 4 starts operating, or the temperature difference from that of the other TK sensor changes only in the specified range for a given time or longer. All stop No temperature change is detected by TK1 despite compressor 1 having been started. No temperature change is detected by TK2 despite compressor 2 having been started. No temperature change is detected by TK3 despite compressor 3 having been started. • Check the TK2 sensor installation. • Check the TK2 sensor resistant characteristics. • Check the misconnection of TK1, TK2, TK3, or TK4. • Check the SV3E valve error. • Check the oil circuit capillary clogging and non-return valve error. • Check the hibernating refrigerant in compressor. • Check the TK3 sensor installation. • Check the TK3 sensor resistant characteristics. • Check the misconnection of TK1, TK2, TK3, or TK4. • Check the SV3E valve error. • Check the oil circuit capillary clogging and non-return valve error. • Check the hibernating refrigerant in compressor. • Check the TK4 sensor installation. • Check the TK4 sensor resistant characteristics. • Check the misconnection of TK1, TK2, TK3, or TK4. • Check the SV3E valve error. • Check the oil circuit capillary clogging and non-return valve error. • Check the hibernating refrigerant in compressor. • Check for disconnection of TK1 sensor. • Check resistance characteristics of TK1 sensor. • Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors • Check for faulty operation in SV3E or SV3F valve. • Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. • Check for refrigerant entrapment inside compressor. • Check for disconnection of TK2 sensor. • Check resistance characteristics of TK2 sensor. • Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors • Check for faulty operation in SV3E or SV3F valve. • Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. • Check for refrigerant entrapment inside compressor. • Check for disconnection of TK3 sensor. • Check resistance characteristics of TK3 sensor. • Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors • Check for faulty operation in SV3E or SV3F valve. • Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. • Check for refrigerant entrapment inside compressor.

– 69 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

SMMS-i (4 series) 01: TK1 oil circuit error 02: TK2 oil circuit error 03: TK3 oil circuit error 04: TK4 oil circuit error 05: TK5 oil circuit error H16 H16 I/F Oil level detection circuit error I/F TD3 sensor miswiring All stop No temperature change is detected by TK4 despite compressor having been started. No temperature change is detected by TK5 despite compressor having been started. All stop Air discharge temperature (TD3) does not increase • Check for disconnection of TK4 sensor. • Check resistance characteristics of TK4 sensor. • Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors • Check for faulty operation in SV3E or SV3F valve. • Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. • Check for refrigerant entrapment inside compressor. • Check for disconnection of TK5 sensor. • Check resistance characteristics of TK5 sensor. • Check for connection error involving TK1, TK2, TK3, TK4, and TK5 sensors • Check for faulty operation in SV3E valve. • Check for clogging in oil equalizing circuit capillary and faulty operation in check valve. • Check for refrigerant entrapment inside compressor. • Check installation of TD3 sensor. • Check connection of TD3 sensor

H25 H25 — L02 L02 — L03 — — (incomplete insertion) Indoor unit Outdoor unit model mismatch error Indoor unit Duplicated indoor header unit Only the target unit stopped Stop of corresponding unit despite compressor 3 being in operation. An error was found on the outdoor unit model. There is more than one header unit in group. connector and wiring. • Check resistance characteristics of TD3 sensor. • Check for defect in outdoor P.C. board (I/F). • Check the model name of the outdoor unit. • Check the miswiring of the communication line between indoor and outdoor. • Check indoor addresses. • Check for any change made to remote controller connection (group / individual) since indoor address setting.

L04 L04 — L05 — — No. of priority indoor units L06 L06 I/F Duplicated outdoor line address I/F Duplicated priority indoor unit (as displayed on priority indoor unit) I/F Duplicated priority indoor unit (as displayed on indoor unit other than priority indoor unit) All stop There is duplication in line address setting for outdoor units belonging to different refrigerant piping systems. All stop More than one indoor unit has been set up as priority indoor unit. All stop More than one indoor unit have been set up as priority indoor unit. • Check line addresses. • Check display on priority indoor unit. • Check displays on priority indoor unit and outdoor unit.

L07 — — L08 L08 — Indoor unit Connection of group control cable to standalone indoor unit Indoor unit Indoor group / addresses not set Stop of corresponding unit Stop of corresponding unit There is at least one stand alone indoor unit to which group control cable is connected. Address setting has not been performed for indoor units. • Check indoor addresses. • Check indoor addresses. Note: This code is displayed when power is turned on for the first time after installation.

L09 — — Indoor unit Indoor capacity not set Stop of corresponding unit Capacity setting has not been performed for indoor unit. Set indoor capacity. (DN = 11) L10 L10 — Target indoor I/F Outdoor capacity not set I/F Outdoor unit All stop Jumper wire provided on P.C. board for servicing I/F P.C. board has not been removed as required for given model. The outdoor unit model is Check model setting of P.C. board for servicing outdoor I/F P.C. board. • Check the outdoor unit model.

L17 L17 address model mismatch error duplicate. The Cool/Heat Flex series 1/2 are duplicate.

– 70 – Check codeLocation

Main Outdoor 7-segment display detection Description System status Error detection

remote controller of Check code Sub-code condition(s) Check items (locations)

L18 L18 — I/F Cool / heat switch unit error Only the target unit stopped The heating operation was performed without the coolonly setting configured in a cool only room where a cool / heat switch unit is not connected. • Check the remote controller setting. (DN=“0F”) • Check the cool / heat switching unit. • Check the piping connection of the switching unit. (Miswiring of discharge gas / suction gas) • Check the SVS / SVD valve miswiring / misinstallation. L20 — — AI-NET Indoor unit Duplicated central control address All stop There is duplication in central control address setting. • Check central control addresses. • Check network adaptor P.C. board (applicable to AI-NET).

L28 L28 — SMMS (Series 1) 01: A3-IPDU1 error 02: A3-IPDU2 error 03: A3-IPDU1/ A3-IPDU2 error 04: Fan IPDU error 05: A3-IPDU1 + Fan IPDU error 06: A3-IPDU2 + Fan IPDU error 07: All IPDU error or Communication error between IPDU and I/F circuit board or Outdoor I/F circuit board error I/F Too many outdoor units connected I/F Error in No. of IPDUs All stop There are more than four outdoor units. All stop Insufficient number of IPDUs are detected when power is turned on. • Check No. of outdoor units connected (Only up to 4 units per system allowed). • Check communication lines between outdoor units. • Check for defect in outdoor P.C. board (I/F). • Check model setting of P.C. board for servicing outdoor I/F P.C. board. • Check connection of UART communication connector. • Check A3-IPDU, fan IPDU, and I/F P.C. board for defect.

L29 L29 SMM-i (Series 4) A3-IPDUFan

IPDU 01 1 O 2 3

02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 80 O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O

Symbol O signifies site of IPDU error. Detected indoor address L30 L30 Indoor unit External interlock of indoor unit Stop of corresponding unit • Signal is present at external error input terminal (CN80) for 1 minute. When external device is connected to CN80 connector: 1) Check for defect in external device. 2) Check for defect in indoor P.C. board. When external device is not connected to CN80 connector: 1) Check for defect in indoor P.C. board.

— — L31 I/F Extended IC error Continued operation There is part failure in P.C. board (I/F). Check outdoor P.C. board (I/F).

P01 — — Indoor unit Indoor fan motor error Stop of corresponding unit • Check the lock of fan motor (AC fan). • Check wiring.

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Main remote controller Check codeLocation condition(s) Check items (locations) Outdoor 7-segment display detection Description System status Error detection of Check code Sub-code

I/F Discharge temperature TD1 error P03 — P03 All stop Discharge temperature (TD1) exceeds 115 ˚C. • Check outdoor service valves (gas side, liquid side) to confirm full opening. • Check outdoor PMVs (PMV1, 2, 4) for clogging. • Check resistance characteristics of TD1 sensor. • Check for insufficiency in refrigerant quantity. • Check for defect in 4-way valve. • Check for leakage of SV4 circuit. • Check SV4 circuit (wiring or installation error in SV41, SV42 or SV43).

P04 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side P04 IPDU Activation of high pressure SW All stop High-pressure SW is activated. • Check connection of highpressure SW connector. • Check for defect in Pd pressure sensor. • Check outdoor service valves (gas side, liquid side) to confirm full opening. • Check for defect in outdoor fan. • Check for defect in outdoor fan motor. • Check outdoor PMVs (PMV1, 2) for clogging. • Check indoor / outdoor heat exchangers for clogging. • Check for short-circuiting of outdoor suction / discharge air flows. • Check SV2 circuit for clogging. • Check for defect in outdoor P.C. board (I/F). • Check for error in indoor fan system (possible cause of air flow reduction). • Check opening status of indoor PMV. • Check indoor-outdoor communication line for wiring error. • Check for faulty operation of check valve in discharge pipe convergent section. • Check gas balancing SV4 valve circuit. • Check SV5 valve circuit. • Check for refrigerant overcharging.

P05 P05 SMMS (Series 1) 01: Open phase detected 02: Phase sequence error SMMS-i (Series 4) 00: 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side I/F Open phase detected, Phase sequence error I/F Detection of open phase / phase sequence Inverter DC voltage (Vdc) error (compressor) MG-CTT error All stop • Phase sequence error was detected when the power is turned on. • Open phase error was detected when the power is turned on. All stop • Open phase is detected when power is turned on. • Inverter DC voltage is too high (overvoltage) or too low (undervoltage). • Check the phase sequence of outdoor power wiring. • Check the outdoor PC board (I/F) error. • Check for defect in outdoor P.C. board (I/F). P07 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side P07 IPDU I/F Heat sink overheating error All stop Temperature sensor built into IGBT (TH) is overheated. • Check power supply voltage. • Check outdoor fan system error. • Check heat sink cooling duct for clogging. • Check IGBT and heat sink for thermal performance for faulty installation. (e.g. mounting screws and thermal conductivity) • Check for defect in A3-IPDU. (faulty IGBT built-in temperature sensor (TH))

P10 Detected indoor address P10 Indoor unit Indoor overflow error All stop • Float switch operates. • Float switch circuit is open circuited or disconnected at connector. • Check float switch connector. • Check operation of drain pump. • Check drain pump circuit. • Check drain pipe for clogging. • Check for defect in indoor P.C. board. MG-CTT: Magnet contactor

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Main remote controller Check codeLocation condition(s) Check items (locations) Outdoor 7-segment display detection Description System status Error detection of Check code Sub-code

P12 — — Indoor unit Indoor fan motor error Stop of corresponding unit • Motor speed measurements continuously deviate from target value. • Overcurrent protection is activated. • Check connection of fan connector and wiring. • Check for defect in fan motor. • Check for defect in indoor P.C. board. • Check impact of outside air treatment (OA). • Check static pressure setting.

P13 — P13 01: TS condition I/F Outdoor liquid backflow detection error I/F Gas leakdetection (TS1 condition) All stop <During cooling operation> When system is in cooling operation, high pressure is detected in follower unit that has been turned off. <During heating operation> When system is in heating operation, outdoor PMV 1 or 2 continuously registers opening of 100p or less while under SH control. All stop Protective shutdown due to sustained suction temperature at or above judgment criterion for at least 10 minutes is repeated four times or more. <TS error judgment criterion> In cooling operation: 60 ˚C In heating operation: 40 ˚C • Check full-close operation of outdoor PMV (1, 2, 4). • Check for defect in Pd or Ps sensor. • Check gas balancing circuit (SV2) for clogging. • Check balance pipe. • Check SV3B circuit for clogging. • Check defect in outdoor P.C. board (I/F). • Check capillary of oil separator oil return circuit for clogging. • Check for leakage of check valve in discharge pipe convergent section. • Check for insufficiency in refrigerant quantity. • Check outdoor service valves (gas side, liquid side) to confirm full opening. • Check PMVs (PMV1, 2) for clogging. • Check resistance characteristics of TS1 sensor. • Check for defect in 4-way valve. P15 P15 02: TD condition I/F Gas leak detection (TD condition) I/F Discharge temperature TD2 error All stop Protective shutdown due to sustained discharge temperature (TD1, TD2 or TD3) at or above 108 ˚C for at least 10 minutes is repeated four times or more. All stop Discharge temperature (TD2) exceeds 115 ˚C. • Check SV4 circuit for leakage • Check for insufficiency in refrigerant quantity. • Check PMVs (PMV 1, 2) for clogging. • Check resistance characteristics of TD1, TD2 and TD3 sensors. • Check indoor filter for clogging. • Check piping for clogging. • Check SV4 circuit (for leakage or coil installation error). • Check outdoor service valves (gas side, liquid side) to confirm full opening. • Check outdoor PMVs (PMV1, 2, 4) for clogging. P17 — P17 P18 — P18 Detected outdoor unit No. I/F Discharge temperature TD3 error I/F 4-way valve reversing error All stop Discharge temperature (TD3) exceeds 115 ˚C. All stop Abnormal refrigerating cycle data is collected during heating operation. • Check resistance characteristics of TD2 sensor. • Check for defect in 4-way valve. • Check SV4 circuit for leakage. • Check SV4 circuit (for wiring or installation error involving SV41, SV42 and SV43). • Check outdoor service valves (gas side, liquid side) to confirm full opening. • Check outdoor PMVs (PMV1, 2, 4) for clogging. • Check resistance characteristics of TD3 sensor. • Check for defect in 4-way valve. • Check SV43 circuit for leakage. • Check SV4 circuit (for wiring or installation error involving SV41, SV42 and SV43). • Check for defect in main body of 4-way valve. • Check for coil defect in 4-way valve and loose connection of its connector.

P19 P19 • Check resistance characteristics of TS1 and TE1 sensors. • Check output voltage characteristics of Pd and Ps pressure sensors. • Check for wiring error involving TE1 and TL sensors.

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Main remote controller Check codeLocation condition(s) Check items (locations) Outdoor 7-segment display detection Description System status Error detection of Check code Sub-code

P20 — P20 SMMS (Series 1) 08: Out of step 0A: IDC activation 0E: Sync error 0F: Control error 06: Maximum rotation exceeded 04: Rotation difference error 0D: Lock 0C: Fan lock I/F Activation of high-pressure protection IPDU Outdoor fan IPDU error All stop Pd sensor detects pressure equal to or greater than 3.6 MPa. All stop (Sub code: 08) FAN IPDU position detection circuit Position detection is not performed properly. All stop (Sub code: 0A) FAN IPDU overcurrent protection circuit Overcurrent was detected when the fan started running or during operation. All stop (Sub code: 0E) FAN IPDU position detection circuit Position detection is not performed properly. All stop (Sub code: 0F) FAN IPDU position detection circuit Position detection is not performed properly. • Check for defect in Pd pressure sensor. • Check service valves (gas side, liquid side) to confirm full opening. • Check for defect in outdoor fan. • Check for defect in outdoor fan motor. • Check outdoor PMVs (PMV1, 2, 4) for clogging. • Check indoor / outdoor heat exchangers for clogging. • Check for short-circuiting of outdoor suction / discharge air flows. • Check SV2 circuit for clogging. • Check for defect in outdoor P.C. board (I/F). • Check for defect in indoor fan system (possible cause of air flow reduction). • Check opening status of indoor PMV. • Check indoor-outdoor communication line for wiring error. • Check for faulty operation of check valve in discharge pipe convergent section. • Check gas balancing SV4 valve circuit. • Check SV5 valve circuit. • Check for refrigerant overcharging. • Check the fan motor. • Check the connector connection for fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the connector connection for fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the connector connection for fan motor. • Check the error of IPDU board for fan. P22 P22 All stop (Sub code: 06) External factors such as blast Position detection is not performed properly. (Restarted in 6 seconds) All stop (Sub code: 04) External factors such as blast The difference between targeted rotation and actual rotation is 25% or more. (Restarted in 6 seconds) All stop (Sub code: 0D) FAN IPDU position detection circuit Position detection is not performed properly. (No wind) All stop (Sub code: 0C) External factors such as blast Position detection is not performed properly. (Wind blows) (Restarted in 6 seconds) • Check the fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the connector connection for fan motor. • Check the error of IPDU board for fan. • Check the fan motor. • Check the error of IPDU board for fan.

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Main remote controller Check codeLocation condition(s) Check items (locations) Outdoor 7-segment display detection Description System status Error detection of Check code Sub-code

P22 P26 P29 P22 P26 P29 SMMS-i (Series 4) 0.: IGBT circuit 1.: Position detection circuit error 3.: Motor lockup error 4.: Motor current detection C.: TH sensor temperature error D.: TH sensor error E.: Inverter DC voltage error (outdoor fan) Note: Although letters 0 to F appear at locations indicated by “ ∗ ”, please ignore them. 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side 01: Compressor 1 side 02: Compressor 2 side 03: Compressor 3 side IPDU Outdoor fan IPDU error IPDU G-TR shortcircuit protection error IPDU Compressor position detection circuit error All stop (Sub code: 0∗) Fan IPDU over current protection circuit Flow of current equal to or greater than the specified value is detected during startup of the fan. All stop (Sub code: 1∗) Fan IPDU position detection circuit Position detection is not going on normally. All stop (Sub code: 3∗) Gusty wind, an obstruction, or another external factor Speed estimation is not going on normally. All stop (Sub code:4∗) Fan IPDU over current protection circuit Flow of current equal to or greater than the specified value is detected during operation of the fan. All stop (Sub code: C∗) Higher temperature than the specified value is detected during operation of the fan. All stop (Sub code: D∗) The resistance value of the sensor is infinite or zero (open or short circuit). All stop (Sub code: E∗) Fan IPDU DC voltage protection circuit The DC voltage higher or lower than the specified value is detected. All stop Overcurrent is momentarily detected during startup of compressor. All stop Position detection is not going on normally. • Check fan motor. • Check for defect in fan IPDU P.C. board. • Check fan motor. • Check connection of fan motor connector. • Check for defect in fan IPDU P.C. board. • Check fan motor. • Check for defect in fan IPDU P.C. board. • Check fan motor. • Check connection of fan motor connector. • Check for defect in fan IPDU P.C. board. • Check fan motor. • Check for defect in fan IPDU P.C. board. • Check for defect in fan IPDU P.C. board. • Check power voltage of the main power supply. • Check for defect in fan IPDU P.C. board. • Check connection of fan IPDU P.C. board. • Check connector connection and wiring on A3-IPDU P.C. board. • Check for defect in compressor (layer shortcircuit). • Check for defect in outdoor P.C. board (A3-IPDU). • Check wiring and connector connection. • Check for compressor layer short circuit. • Check for defect in A3-IPDU P.C. board.

P31 — — Indoor unit Other indoor error (group follower unit error) Stop of corresponding unit There is error in other indoor unit in group, resulting in detection of E07/L07/L03/L08. • Check indoor P.C. board.

– 75 – Errors detected by TCC-LINK central control device Check codeLocation condition(s) Check items (locations) Outdoor 7-segment display

Main remote controller Check code Sub-code detection Description System status Error detection of

C05 — — C06 — — TCC-LINK TCC-LINK central control device transmission error TCC-LINK central control device reception error Continued operation Continued operation Central control device is unable to transmit signal. Central control device is unable to receive signal. • Check for defect in central control device. • Check for defect in central control communication line. • Check termination resistance setting. • Check for defect in central control device. • Check for defect in central control communication line. • Check termination resistance setting. • Check power supply for devices at other end of central control communication line. • Check defect in P.C. boards of devices at other end of central control communication line.

C12 — — General purpose device I/F Blanket alarm for general purpose device control interface Continued operation Error signal is input to control interface for general-purpose devices. • Check error input.

Differs according to nature of alarm-causing error P30 TCC-LINK Group control follower unit error Continued operation Error occurs in follower unit under group control. ([P30] is displayed on central control remote controller.) • Check check code of unit that has generated alarm.

(L20 displayed.) Duplicated central control address Continued operation There is duplication in central control addresses. • Check address settings.

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[P12 error] Power off. Is not

connection error or disconnection on the connector CN210 of indoor unit P.C. board? NO YES Repair the connector connection.

Disconnect the connector CN210 to the indoor P.C. board

Does the fan turn smoothly when turned by hand? YES Is each resistance value on the motor side of the fan motor connector CN210 of the indoor P.C. board correct? NO NO Model name for the indoor fan motor. ICF-340D62-1, ICF-340WD109-1 <Checking procedure> Replace the indoor fan motor. Replace the indoor fan motor.

YES Measure the resistance of the following terminals with the tester. Internal motor circuit is damaged if the measured value is out of the range in below table.

Pin No. 7 6 5 4 3 2 1

Color Blue Yellow White Black — — Red ∗ Measure by connecting the com side to 4 (Black) while measuring. The measurement may vary. Measurement place Resistance value a, b, c ∞ I. Between 4 (Black) - 1 (Red) (MΩ) II. Between 4 (Black) - 5 (White) 35k – 65kΩ III. Between 4 (Black) - 6 (Yellow) 130k – 170kΩ ∞ ) IV. Between 4 (Black) - 7 (Blue) (MΩ [Action if the measurement is out of the range] If any measurement in the above table is between 0 to several 100 Ω, replace the indoor P.C. board together with the motor since the indoor P.C. board is damaged.

Is F01 of the indoor P.C. board open? NO Is R04 or R05 of the indoor P.C. board open? NO YES YES Replace the indoor P.C. board (MCC-1643). Replace the indoor P.C. board (MCC-1643). Check the indoor P.C. board (MCC-1643). If faulty Replace

– 77 – 8-5. Diagnostic Procedure for Each Check Code (Indoor Unit) * Please refer to the multi outdoor unit service manual excluding these. Check code [E11 error] Is the connection for the

UART communication connector (Internal board CN521 red/Optional board CN1 red) normal? No Is connector lead wire for the UART communication cut? No Red LED (LD1) of external output board not illuminated. No Red LED (LD1) light on the external input/ output board flashes on and off. No Red LED (LD1) of external input/output board blinks. No Check the operating status. Yes Yes Yes Yes Yes Repair of connector connection. Replacement of the connector fs lead wire. Lead wire is cut or fault of input/output board. Fault with the external input/output board → Replace Fault with the external input/output board → Replace

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8-6. Sensor characteristics Indoor unit Temperature sensor characteristics Indoor TA sensor 30 Resistance [kΩ] 20 10 Temperature [˚C] 0 5 10 15 20 25 30 35 40 45 50 55 Resistance [kΩ] 33.9 26.1 20.3 15.9 12.6 10.0 8.0 6.4 5.2 4.2 3.5 2.6

10 0 Indoor TC1 sensor 200 150 Resistance [kΩ] (10˚C or below) 100 50 20 30 40 50 Temperature [˚C] 60 20 15 Resistance [kΩ] (10˚C or above) 10 5 60 Temperature [˚C] –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 2.4 Resistance [kΩ] 99.9 74.1 55.6 42.2 32.8 25.4 19.8 15.6 12.4 10.0 8.1 6.5 5.3 4.4 3.6 3.0 2.5 2.1 1.8 1.5

0 0 80 1.3

–30 –20 –10 0 10 20 30 40 50 60 70 80 90 100 Temperature [˚C] 85 90 95 100 Temperature [˚C] 1.1 1.0 0.8 0.7 Resistance [kΩ]

Indoor TC2 and TCJ sensors 200 150 Resistance [kΩ] (10˚C or below) 100 50 20 15 Resistance [kΩ] (10˚C or above) 10 5 –20 –15 –10 –5 0 5 10 15 20 25 30 35 40 45 50 55 60 65 115.2 84.2 62.3 46.6 35.2 26.9 20.7 16.1 12.6 10.0 8.0 6.4 5.2 4.2 3.5 2.8 2.4 2.0

0 0 70 1.6

–30 –20 –10 0 10 20 30 40 50 60 70 80 90 100 75 1.4

Temperature [˚C] 1.2 80 – 79 – <Maintenance/Check list> Aiming in environmental preservation, it is strictly recommended to clean and maintain the indoor/outdoor units of the operating air conditioning system regularly to secure effective operation of the air conditioner. It is also recommended to maintain the units once a year regularly when operating the air conditioner for a long time. Check periodically signs of rust or scratches, etc. on coating of the outdoor units. Repair the defective position or apply the rust resisting paint if necessary. If an indoor unit operates for approx. 8 hours or more per day, usually it is necessary to clean the indoor/ outdoor units once three months at least. These cleaning and maintenance should be carried out by a qualified dealer. Although the customer has to pay the charge for the maintenance, the life of the unit can be prolonged. Failure to clean the indoor/outdoor units regularly will cause shortage of capacity, freezing, water leakage or trouble on the compressor. Part name Object Contents of check Contents of maintenance Indoor Outdoor Heat exchanger • Blocking with dust, damage check • Clean it when blocking is found. Fan motor • Audibility for sound • When abnormal sound is heard Filter — • Visual check for dirt and breakage • Clean with water if dirty • Replace if any breakage

Fan Suction/ • Visual check for swing and balance • Check adhesion of dust and external appearance. • Replace fan when swinging or balance is remarkably poor. • If a large dust adheres, clean it with brush or water.

Discharge grille — • Visual check for dirt and scratch • Repair or replace it if deformation or damage is found. Drain pan — • Check blocking by dust and dirt of drain water. • Clean drain pan, Inclination check Face panel, Louver — • Check dirt and scratch. • Cleaning/Coating with repair painting External appearance — • Check rust and pealing of insulator • Check pealing and floating of coating film • Coating with repair painting To open the access panel Use a screwdriver to unfasten the screws of the access panel (two places), slide the cabinet upward by approximately 30mm, and pull it out toward you. Access panel Screws – 80 –


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