MITSUBISHI ELECTRIC MR. SLIM PCA-RP-HAQ (01) PDF MANUAL


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PDF Content Summary: Air-Conditioners PCA-RP·HAQ INSTALLATION MANUAL FOR INSTALLER

For safe and correct use, read this manual and the outdoor unit installation manual thoroughly before installing the air-conditioner unit. English

Contents 1. Safety precautions ................................................................................... 2 2. Installation location .................................................................................. 3 3. Installing the indoor unit ........................................................................... 3 4. Installing the refrigerant piping ................................................................. 4 Note: 5. Drainage piping work ............................................................................... 6 6. Electrical work .......................................................................................... 6 7. Test run .................................................................................................. 10 8. Easy maintenance function .................................................................... 12

The phrase “Wired remote controller” in this installation manual refers only to the PAR-21MAA. If you need any information for the PAR-30MAA, please refer to either the installation manual or initial setting manual which are included in PAR-30MAA box. 1. Safety precautions

s Before installing the unit, make sure you read all the “Safety precau tions”. s Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system. Warning: Describes precautions that must be observed to prevent danger of injury or death to the user. Caution: Describes precautions that must be observed to prevent damage to the unit. Warning: • Ask a dealer or an authorized technician to install the unit. • For installation work, follow the instructions in the Installation Manual and use tools and pipe components specifically made for use with refrigerant specified in the outdoor unit installation manual. • The unit must be installed according to the instructions in order to minimize the risk of damage from earthquakes, typhoons, or strong winds. An incor rectly installed unit may fall down and cause damage or injuries. • The unit must be securely installed on a structure that can sustain its weight. • If the air conditioner is installed in a small room, measures must be taken to prevent the refrigerant concentration in the room from exceeding the safety limit in the event of refrigerant leakage. Should the refrigerant leak and cause the concentration limit to be exceeded, hazards due to lack of oxygen in the room may result. 1.1. Before installation (Euvironment) Caution: • Do not use the unit in an unusual environment. If the air conditioner is in stalled in areas exposed to steam, volatile oil (including machine oil), or sulfuric gas, areas exposed to high salt content such as the seaside, the performance can be significantly reduced and the internal parts can be damaged. • Do not install the unit where combustible gases may leak, be produced, flow, or accumulate. If combustible gas accumulates around the unit, fire or explo sion may result. • Do not keep food, plants, caged pets, artwork, or precision instruments in the direct airflow of the indoor unit or too close to the unit, as these items can be damaged by temperature changes or dripping water. 1.2. Before installation or relocation Caution: • Be extremely careful when transporting the units. Two or more persons are needed to handle the unit, as it weighs 20 kg or more. Do not grasp the packaging bands. Wear protective gloves as you can injure your hands on the fins or other parts. • Be sure to safely dispose of the packaging materials. Packaging materials, such as nails and other metal or wooden parts may cause stabs or other injuries. 1.3. Before electric work Caution: • Be sure to install circuit breakers. If not installed, electric shock may result. • For the power lines, use standard cables of sufficient capacity. Otherwise, a short circuit, overheating, or fire may result. • When installing the power lines, do not apply tension to the cables. 1.4. Before starting the test run Caution: • Turn on the main power switch more than 12 hours before starting operation. Starting operation just after turning on the power switch can severely dam age the internal parts. • Before starting operation, check that all panels, guards and other protective parts are correctly installed. Rotating, hot, or high voltage parts can cause injuries. After installation work has been completed, explain the “Safety Precautions,” use, and maintenance of the unit to the customer according to the information in the Op eration Manual and perform the test run to ensure normal operation. Both the Instal lation Manual and Operation Manual must be given to the user for keeping. These manuals must be passed on to subsequent users. : Indicates a part which must be grounded. Warning: Carefully read the labels affixed to the main unit. • Ventilate the room if refrigerant leaks during operation. If refrigerant comes into contact with a flame, poisonous gases will be released. • All electric work must be performed by a qualified technician according to local regulations and the instructions given in this manual. • Use only specified cables for wiring. • The terminal block cover panel of the unit must be firmly attached. • Use only accessories authorized by Mitsubishi Electric and ask a dealer or an authorized technician to install them. • The user should never attempt to repair the unit or transfer it to another loca tion. • After installation has been completed, check for refrigerant leaks. If refriger ant leaks into the room and comes into contact with the flame of a heater or portable cooking range, poisonous gases will be released. • When the room humidity exceeds 80% or when the drainpipe is clogged, wa ter may drip from the indoor unit. Do not install the indoor unit where such dripping can cause damage. • When installing the unit in a hospital or communications office, be prepared for noise and electronic interference. Inverters, home appliances, high-fre quency medical equipment, and radio communications equipment can cause the air conditioner to malfunction or breakdown. The air conditioner may also affect medical equipment, disturbing medical care, and communications equip ment, harming the screen display quality. • Thermal insulation of the refrigerant pipe is necessary to prevent condensa tion. If the refrigerant pipe is not properly insulated, condensation will be formed. • Place thermal insulation on the pipes to prevent condensation. If the drain pipe is installed incorrectly, water leakage and damage to the ceiling, floor, furniture, or other possessions may result. • Do not clean the air conditioner unit with water. Electric shock may result. • Tighten all flare nuts to specification using a torque wrench. If tightened too much, the flare nut can break after an extended period. • Be sure to ground the unit. If the unit is not properly grounded, electric shock may result. • Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and molded case circuit breaker) with the specified capacity. If the circuit breaker capacity is larger than the specified capacity, breakdown or fire may result. • Do not operate the air conditioner without the air filter set in place. If the air filter is not installed, dust may accumulate and breakdown may result. • Do not touch any switch with wet hands. Electric shock may result. • Do not touch the refrigerant pipes with bare hands during operation. • After stopping operation, be sure to wait at least five minutes before turning off the main power switch. Otherwise, water leakage or breakdown may result.

2 2. Installation location 2.1. Outline dimensions (Indoor unit) (Fig. 2-1) Select a proper position allowing the following clearances for installation and mainte nance. (mm) Models W D H A B ∗ C E RP71 1136 650 296 Min. 100 Min. 100 Min. 500 Max. 250 RP125 1520 650 296 Min. 100 Min. 100 Min. 500 Max. 250 Warning: Mount the indoor unit on a ceiling strong enough to withstand the weight of the unit. ∗ More than 300 mm recommended for easy maintenance. F Obstacle Fig. 2-1 3. Installing the indoor unit

1 2 3 3.1. Check the indoor unit accessories (Fig. 3-1) The indoor unit should be supplied with the following spare parts and accessories (contained in the inside of the intake grille). Accessory name Q’ty

4 5 6 7 8 9 (PAC-SG38KF-E) @À Fig. 3-1 1) (mm) 2) A Independent piece (Removable) B Drain tubing C Gas tubing D Liquid tubing E T.B.box Fig. 3-2 (mm) A Pattern paper B Suspension bolt hole C Indoor unit width Fig. 3-3 A Use inserts of 100 kg to 150 kg each. B Use suspension bolts of 1 Washer 4 pcs + 4 pcs (with insulation) 2 Pipe cover 1 pc Large size (For gas tubing) 3 Pipe cover 1 pc Small size (For liquid tubing) 4 Band 4 pcs 5 Drain hose 1 pc 6 Band 2 pcs 7 Drain tubing cover 1 pc 8 Filter element 12 pcs 9 Flare nut RP125 1 (ø19.05) RP71 0 3.2. Preparation for installation (Fig. 3-2) 1) Suspension bolt installing spacing (mm) Models A B RP71 1180 1136 RP125 1564 1520 2) Refrigerant and drain tubing location (mm) Models C RP71 542 RP125 422 3) Selection of suspension bolts and tubing positions (Fig. 3-3) Using the pattern paper provided for installation, select proper positions for suspen sion bolts and tubing and prepare relative holes. Secure the suspension bolts or use angle stock braces or square timbers for bolt installation. (Fig. 3-4)

A B W3/8 or M10 in size Fig. 3-4

3

3. Installing the indoor unit Fig. 3-5 Fig. 3-6 A Ceiling surface B Suspending bolt C Suspending bracket D Nut (purchased locally) E Washer 1 (with insula tion) F Washer 1 (without insu lation) (mm) A Suspending bracket B Unit C Double nuts (purchased locally) D Nut (purchased locally) E Washer 1 (with insulation) F Washer 1 (without insulation) 4) Indoor unit preparation (Fig. 3-5) 1. Install the suspending bolts. (Procure the W3/8 or M10 bolts locally.) Predetermine the length from the ceiling (1 within 70-90 mm). 2. Remove the intake grille. Slide the intake grille holding knobs (at two locations) backward to open the intake grille. 3. Remove the side panel. Remove the side panel holding screws (one in each side, right and left) then slide the side panel forward for removal. 3.3. Installing the indoor unit (Fig. 3-6) Use a proper suspending method depending on the presence or absence of ceiling materials as side. In the absence of ceiling materials 1) Directly suspending the unit Installing procedures 1. Install the washer 1 (with insulation) and the nut (to be locally procured). 2. Install the washer 1 (without insulation) and the nut (to be locally procured). 3. Set (hook) the unit through the suspending bolts. 4. Tighten the nuts. Check the unit installing condition. • Check that the unit is horizontal between the right and left sides. • Check that the unit slopes continuously downward from the front to the rear. • Check that the unit is not contacting the ceiling.

4. Installing the refrigerant piping 4.1. Precautions 4.1.1. For devices that use R407C refrigerant • Do not use the existing refrigerant piping. • Do not use crushed, misshapen, or discolored tubing. The inside of the tub ing should be clean and free from harmful sulfuric compounds, oxidants, dirt, debris, oils and moisture. • Store the piping to be used during installation indoors and keep both ends of the piping sealed until just before brazing. • Use ester oil, ether oil or alkylbenzene (small amount) as the refrigerator oil to coat flares and flange connections. • Use liquid refrigerant to fill the system. • Do not use a refrigerant other than R407C. • Use a vacuum pump with a reverse flow check valve. • Do not use the tools that are used with conventional refrigerants. • Do not use a charging cylinder. • Be especially careful when managing the tools. • Do not use commercially available dryers. 4.1.2. For devices that use R410A refrigerant • Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration oil applied to the flared sections. • Use C1220 copper phosphorus, for copper and copper alloy seamless pipes, to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses specified in the table to the below. Make sure the insides of the pipes are clean and do not contain any harmful contaminants such as sulfuric com pounds, oxidants, debris, or dust. Warning: When installing or moving the air conditioner, use only the specified refriger ant (R410A) to charge the refrigerant lines. Do not mix it with any other refriger ant and do not allow air to remain in the lines. Air enclosed in the lines can cause pressure peaks resulting in a rupture and other hazards. RP35, 50 RP60-140 Liquid pipe ø6.35 thickness 0.8 mm ø9.52 thickness 0.8 mm Gas pipe ø12.7 thickness 0.8 mm ø15.88 thickness 1.0 mm • Do not use pipes thinner than those specified above. 4

4. Installing the refrigerant piping A 45°±2° B ° 5 . 0 A ± ø ° 4.2. Indoor unit (Fig. 4-1) • When commercially available copper pipes are used, wrap liquid and gas pipes with commercially available insulation materials (heat-resistant to 100 °C or more, thickness of 12 mm or more). • The indoor parts of the drain pipe should be wrapped with polyethylene foam insu R0.4~R0.8 0 9 Apply refrigerating machine oil over the entire flare seat surface. Be sure to only use the flare nuts that came with the unit. Fig. 4-1 lation materials (specific gravity of 0.03, thickness of 9 mm or more). • Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening flare nut. • Use two wrenches to tighten piping connections. • Use leak detector or soapy water to check for gas leaks after connections are com pleted. • Use refrigerant piping insulation provided to insulate indoor unit connections. Insu late carefully following shown below. • Use correct flare nuts meeting the pipe size of the outdoor unit. Available pipe size RP35, 50 RP60 RP71 RP100, 125, 140 Liquid side ø6.35 ø6.35 – – A Flare cutting dimensions Copper pipe O.D. Flare dimensions (mm) øA dimensions (mm) ø6.35 8.6 - 9.0 ø9.52 12.6 - 13.0 ø12.7 15.8 - 16.2 ø15.88 19.0 - 19.4 ø19.05 22.9 - 23.3 B Flare nut tightening torque Copper pipe O.D. Tightening torque Tightening angle (mm) (N·m) (Guideline) ø6.35 14 - 18 60˚ - 90˚ ø9.52 35 - 42 60˚ - 90˚ ø12.7 50 - 58 30˚ - 60˚ ø15.88 75 - 80 30˚ - 60˚ ø19.05 100 - 140 20˚ - 35˚ A A Die B Copper pipe A B Fig. 4-2 Copper pipe O.D. A (mm) (mm) Flare tool for R-22·R407C Flare tool for R410A Clutch type ø6.35 (1/4") 0 - 0.5 1.0 - 1.5 ø9.52 (3/8") 0 - 0.5 1.0 - 1.5 ø12.7 (1/2") 0 - 0.5 1.0 - 1.5 ø15.88 (5/8") 0 - 0.5 1.0 - 1.5 ø19.05 (3/4") 0 - 0.5 1.0 - 1.5 C DE G A Gas tubing (with insulation) E Pipe cover 3 B Liquid tubing (with insulation) F Press the pipe cover against the sheet metal. C Band 6 G Refrigerant tubing heat insulating material D Pipe cover 2 Fig. 4-3 ø9.52 ø9.52 ø9.52 ø9.52 ø12.7 –– – Gas side ø15.88 ø15.88 ø15.88 ø15.88 – – –ø19.05 P25 P35, 50, 60, 71 P100, 125, 140 Liquid side ø6.35 – – – ø9.52 ø9.52 ø12.7 – – Gas side – ø15.88 – – –ø19.05 : Factory flare nut attachment to the heat-exchanger. Installing procedures 1. Slide the supplied pipe cover 2 over the gas tubing until it is pressed against the sheet metal inside the unit. 2. Slide the provided pipe cover 3 over the liquid tubing until it is pressed against the sheet metal inside the unit. 3. Tighten the pipe covers 2 and 3 at the both ends (15 - 20 mm) with the supplied bands 4. • After connecting the refrigerant piping to the indoor unit, be sure to test the pipe connections for gas leakage with nitrogen gas. (Check that there is no refrigerant leakage from the refrigerant piping to the indoor unit.) Conduct the airtightness test before connecting the outdoor unit stop valve and the refrigerant pipe. If the test is conducted after the valve and pipe are connected, gas, which is used for checking the airtightness, will leak from the stop valve and flow into the outdoor unit, resulting in abnormal operation.

5 5. Drainage piping work Installing procedures 1. Remove the independent piece (2 screws) of the indoor unit. 2. Attach the band 6 supplied with the unit to the drain hose 5. 3. Connect the drain hose 5 to the drain hole of the unit. 4. Connect the field drain tubing (VP 25/O.D. ø32 PVC TUBE) to the drain hose 5. 5. Tighten the band 6 in 2 places. 6. Wrap the drain tubing cover 7 supplied with the unit. 7. Install the independent piece. 8. Check for correct drainage. ∗ Fill the drain pan with water of about 1 L from the tubing sensor access port. ∗ After checking for correct drainage, replace the tubing sensor access port cover.

A Drain pan B Band 6 C Unit (Drain hole) D Matching E Drain hose 5 F Drain tubing cover 7 6. Electrical work G Rear panel H Independent piece I On site drain pipe (VP25) J Insertion margin: 25 mm K Inspection hole Fig. 5-1 A Terminal block cover B Set screws C Wiring clamp D Pull E Terminal block for indoor and outdoor units connection F Terminal block for remote controller G Grounding cable connector H T.B.box I Wire service entrance Fig. 6-1 6.1. Electric wiring (Fig. 6-1) Wiring procedures 1. Insert all electrical wires into the unit. 2. Remove the terminal block cover (1 screw). 3. Connect the electric wires securely to the corresponding terminals. 4. Replace the terminal block cover. 5. Tie the electric wires with the local wiring clamp located in the right side of the junction box.

6.1.1. Indoor unit power supplied from outdoor unit The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System

<For models without heater>D <For models with heater> G D G A Outdoor unit power supply B Earth leakage breaker C Wiring circuit breaker or isolating switch

AB C L N S1 S2 L ABC H N S1 S1 S2 S2 B C D Outdoor unit L E Indoor unit/outdoor unit connecting cords N F Remote controller S1 G Indoor unit S2

S3 S3 S3 S3 H Heater power supply

E F E 1 F 2 1 2

* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units. 6

6. Electrical work Simultaneous twin/triple/four system

<For models without heater> <For models with heater> A Outdoor unit power supply B Earth leakage breaker

D GGGG D GGG C Wiring circuit breaker or isolating switch

ABC L N S1 S2 S1 S2 S1 S2 S1 S2 ABC S1 S2 L N S1 S2 BH C L N S1 S2 L N S1 S2 D Outdoor unit L N E Indoor unit/outdoor unit connecting cords F Remote controller S1 G Indoor unit S2

S3 S3 H Heater power supply

S3 S3 S3 S3 S3 S3 S3 E 1 1 1 F E

F 1 2 1 2 1 2 1 2 2 2 2

* Affix a label A that is included with the manuals near each wiring diagram for the indoor and outdoor units.

Indoor unit model Indoor unit power supply (Heater) Indoor unit input capacity (Heater) *1 Main switch (Breaker) PCA – –

g n i r iW e z i s ⋅ . o N e r iW Indoor unit power supply (Heater) Indoor unit power supply (Heater) earth ) 2 Indoor unit-Outdoor unit *2 m Indoor unit-Outdoor unit earth *2 m ( Remote controller-Indoor unit *3 Indoor unit (Heater) L-N *4 – – 3 ⋅ 1.5 (polar) 1 ⋅ Min. 1.5 2 ⋅ 0.3 (Non-polar) –

t i u c r iC Indoor unit-Outdoor unit S1-S2 *4 g n Indoor unit-Outdoor unit S2-S3 *4 i t a r Remote controller-Indoor unit *4 AC 230 V DC24 V DC12 V

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV). *2. <For 25-140 outdoor unit application> Max. 45 m If 2.5 mm2 used, Max. 50 m If 2.5 mm2 used and S3 separated, Max. 80 m For PUHZ-RP100/125/140 YHA application, use shield wires. The shield part must be grounded with the indoor unit OR the outdoor unit, NOT with both. <For 200/250 outdoor unit application> Max. 18 m If 2.5 mm2 used, Max. 30 m If 4 mm2 used and S3 separated, Max. 50 m If 6 mm2 used and S3 separated, Max. 80 m *3. The 10 m wire is attached in the remote controller accessory. Max. 500 m *4. The figures are NOT always against the ground. S3 terminal has DC 24 V against S2 terminal. However between S3 and S1, these terminals are not electrically insulataed by the transformer or other device. Notes: 1. Wiring size must comply with the applicable local and national code. 2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57) 3. Install an earth longer than other cables. 6.1.2. Separate indoor unit/outdoor unit power supplies (For PUHZ application only) The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System

<For models without heater> * The optional wiring replacement kit is required. D L J A CB N S1 S2 B C G L N S1 S2 H A Outdoor unit power supply B Earth leakage breaker C Wiring circuit breaker or isolating switch D Outdoor unit E Indoor unit/outdoor unit connecting cords F Remote controller G Indoor unit H Option

S3 S3 J Indoor unit power supply

E F 1 2

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units. Simultaneous twin/triple/four system <For models without heater> * The optional wiring replacement kits are required. A Outdoor unit power supply B Earth leakage breaker C Wiring circuit breaker or isolating switch

D GGGG D Outdoor unit

ABC L N S1 S2 JBC L N S1 S2 L N S1 S2 H L N S1 S2 L N S1 S2 E Indoor unit/outdoor unit connecting cords F Remote controller G Indoor unit H Option

S3 S3

E F S3 1 2 S3 1 2 S3 1 2 J Indoor unit power supply 1 2

* Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units. 7

6. Electrical work If the indoor and outdoor units have separate power supplies, refer to the table at the below. If the optional wiring replacement kit is used, change the indoor unit electrical box wiring refering to the figure in the right and the DIP switch settings of the outdoor unit control board. Indoor unit specifications Electric heater (For models with heater) Connectors (connections when shipped from the factory are for indoor unit power supplied from outdoor unit) If the indoor and outdoor units have separate power supplies, change the connections of the

Indoor power supply terminal kit (option) Indoor unit electrical box connector con nection change Label affixed near each wiring diagram for the indoor and outdoor units Outdoor unit DIP switch settings (when Required Required Required L N S1 S2 S3 B L UE YE LL OW B L UE YE LL OW C ND ORANGE CND Indoor unit control board Electric heater (For models with heater) connectors as shown in the following figure. Connectors

using separate indoor unit/outdoor unit power supplies only) ON 3 Indoor unit power supplied from outdoor unit L Y B E L L (when shipped from factory) L U N O

OFF 1 2 (SW8) E W Y B E L L L C U O E W N D * There are three types of labels (labels A, B, and C). Affix the appropriate labels to S1 S2 the units according to the wiring method. S3 ORANGE CND Indoor unit control board Indoor unit model Indoor unit power supply Indoor unit input capacity *1 Main switch (Breaker) Separate indoor unit/outdoor unit power supplies PCA ~/N (single), 50 Hz, 230 V 16 A

g n i r iW e z i s ⋅ . o N e r iW Indoor unit power supply Indoor unit power supply earth ) 2 Indoor unit-Outdoor unit *2 m Indoor unit-Outdoor unit earth m ( Remote controller-Indoor unit *3 Indoor unit L-N *4 2 ⋅ Min. 1.5 1 ⋅ Min. 1.5 2 ⋅ Min. 0.3 – 2 ⋅ 0.3 (Non-polar) AC 230 V

t i u c r iC Indoor unit-Outdoor unit S1-S2 *4 g n Indoor unit-Outdoor unit S2-S3 *4 i t a r Remote controller-Indoor unit *4 – DC24 V DC12 V

*1. A breaker with at least 3 mm contact separation in each pole shall be provided. Use non-fuse breaker (NF) or earth leakage breaker (NV). *2. Max. 120 m For PUHZ-RP100/125/140 YHA application, use shield wires. The shield part must be grounded with the indoor unit OR the outdoor unit, NOT with both. *3. The 10 m wire is attached in the remote controller accessory. Max. 500 m *4. The figures are NOT always against the ground. Notes: 1. Wiring size must comply with the applicable local and national code. 2. Power supply cords and indoor unit/outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (Design 245 IEC 57) 3. Install an earth longer than other cables.

B A 0 3 A Remote controller profile (mm) 6.2. Remote controller (Fig. 6-2) For wired remote controller 1) Installing procedures (1) Select an installing position for the remote controller.

30 C (2) A 5 . 38 30 46 0 2 1 C D E Fig. 6-2 B B Required clearances surrounding the remote controller C Installation pitch B-1. B-2. The temperature sensors are located on both remote controller and indoor unit. s Procure the following parts locally: Two piece switch box Thin copper conduit tube Lock nuts and bushings (2) Seal the service entrance for the remote controller cord with putty to prevent pos sible invasion of dew drops, water, cockroaches or worms. (Fig.6-3) A For installation in the switch box:

F H I G I I B For direct installation on the wall select one of the following: H • Prepare a hole through the wall to pass the remote controller cord (in order to run the remote controller cord from the back), then seal the hole with putty. • Run the remote controller cord through the cut-out upper case, then seal the cut out notch with putty similarly as above. B-1. To lead the remote controller cord from the back of the controller: B-2. To run the remote controller cord through the upper portion:

Fig. 6-3 C Wall D Conduit

H (3) For direct installation on the wall (Fig.6-4) (3) E Lock nut

J Fig. 6-4 F Bushing G Switch box H Remote controller cord I Seal with putty J Wood screw

8

6. Electrical work A A To TB5 on the indoor unit B TB6 (No polarity) AB TB6 B Fig. 6-5 2) Connecting procedures (Fig.6-5) Connect the remote controller cord to the terminal block. 3) Two remote controller setting If two remote controllers are connected, set one to “Main” and the other to “Sub”. For setting procedures, refer to “Function selection of remote controller” in the operation manual for the indoor unit.

1 F 2 TEMP. 3 4 ON/OFF ⁄ Mode number 1 ⁄ Setting number 2 ⁄ Refrigerant address 3 ⁄ Unit number 4 6.3. Function settings 6.3.1. Function setting on the unit (Fig. 6-6) Changing the power voltage setting • Be sure to change the power voltage setting depending on the voltage used. 1 Go to the function setting mode. Switch OFF the remote controller. Press the A and B buttons simultaneously and hold them for at least 2

E MENU ON/OFF A FILTER seconds. FUNCTION will start to flash.

BACK MONITOR/SET DAY CHECK 2 Use the C button to set the refrigerant address (3) to 00. TEST

G PAR-21MAA CLOCK OPERATION CLEAR B 3 Press D and [--] will start to flash in the unit number (4) display. 4 Use the C button to set the unit number (4) to 00. 5 Press the E MODE button to designate the refrigerant address/unit number. [--]

DC 4 1 Fig. 6-6 1 2 will flash in the mode number (1) display momentarily. 6 Press the F buttons to set the mode number (1) to 04. 7 Press the G button and the current set setting number (2) will flash. Use the F button to switch the setting number in response to the power supply voltage to be used. Power supply voltage 240 V : setting number = 1 220 V, 230 V : setting number = 2 8 Press the MODE button E and mode and the setting number (1) and (2) will change to being on constantly and the contents of the setting can be confirmed. 9 Press the FILTER A and TEST RUN B buttons simultaneously for at least two seconds. The function selection screen will disappear momentarily and the air conditioner OFF display will appear. Function table Select unit number 00 Mode Power failure automatic recovery Indoor temperature detecting LOSSNAY connectivity Power voltage Settings Not available Available *1 Indoor unit operating average Set by indoor unit’s remote controller Remote controller’s internal sensor Not Supported Supported (indoor unit is not equipped with outdoor-air intake) Supported (indoor unit is equipped with outdoor-air intake) 240 V 220 V, 230 V Mode no. Setting no. Initial setting setting 01 1 *2 2 *2 1 02 2 3 1 03 2 3 04 12

Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])

Mode Filter sign Settings 100Hr 2500Hr No filter sign indicator Mode no. Setting no. Initial setting setting 1 07 2 3

*1 When the power supply returns, the air conditioner will start 3 minutes later. *2 Power failure automatic recovery initial setting depends on the connecting outdoor unit. 9

7. Test run 7.1. Before test run s After completing installation and the wiring and piping of the indoor and outdoor units, check for refrigerant leakage, looseness in the power supply or control wiring, wrong polarity, and no disconnection of one phase in the supply. s Use a 500-volt megohmmeter to check that the resistance between the power supply terminals and ground is at least 1.0 MΩ. s Do not carry out this test on the control wiring (low voltage circuit) termi nals. Warning: Do not use the air conditioner if the insulation resistance is less than 1.0 MΩ. Insulation resistance

F C E DB TEST RUN COOL, HEAT A ON/OFF button B Test run display C Indoor temperature liquid line tem perature display D ON/OFF lamp E Power display F Error code display 7.2. Test run The following 2 methods are available. 7.2.1. Using wired remote controller (Fig. 7-1) 1 Turn on the power at least 12 hours before the test run. 2 Press the [TEST] button twice. ➡ “TEST RUN” liquid crystal display 3 Press the [Mode selection] button. ➡ Make sure that wind is blown out.

˚C ˚C
SIMPLE
Test run remaining time display
4 Press the [Mode selection] button and switch to the cooling (or heating) mode.

TEMP. MENU
ON/OFF
ON/OFF FILTER
A
G Set temperature button H Mode selection button
➡ Make sure that cold (or warm) wind is blown out.
5 Press the [Fan speed] button. ➡ Make sure that the wind speed is switched.

BACK MONITOR/SET DAY
CHECK
TEST
I Fan speed button
6 Check operation of the outdoor unit fan.

PAR-21MAA
CLOCK
OPERATION CLEAR
M TEST button
7 Release test run by pressing the [ON/OFF] button. ➡ Stop
8 Register a telephone number.
The telephone number of the repair shop, sales office, etc., to contact if an error

H G I M Fig. 7-1
occurs can be registered in the remote controller. The telephone number will be displayed when an error occurs. For registration procedures, refer to the operation manual for the indoor unit.
7.2.2. Using SW4 in outdoor unit
Refer to the outdoor unit installation manual.

C
B
TEMP.
MENU
E D
ERROR CODE
ON/OFF
ON/OFF FILTER
A CHECK button B Refrigerant address C TEMP. button
D IC: Indoor unit OC: Outdoor unit E Check code
F Unit address
7.3. Self-check (Fig. 7-2)
1 Turn on the power.
2 Press the [CHECK] button twice.
3 Set refrigerant address with [TEMP.] button if system control is used. 4 Press the [ON/OFF] button to stop the self-check.

BACK MONITOR/SET DAY
CHECK
TEST

PAR-21MAA
CLOCK
B
OPERATION CLEAR
A
ERROR CODE
E
ERROR CODE
F
Fig. 7-2

[Output pattern A] Errors detected by indoor unit
Check code Symptom Remark P1 Intake sensor error
P2, P9 Pipe (Liquid or 2-phase pipe) sensor error
E6, E7 Indoor/outdoor unit communication error
P4 Drain sensor error
P5 Drain pump error
P6 Freezing/Overheating safeguard operation
EE Communication error between indoor and outdoor units
P8 Pipe temperature error
E4 Remote controller signal receiving error
– –
– –
Fb Indoor unit control system error (memory error, etc.)
– – No corresponding
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7. Test run
[Output pattern B] Errors detected by unit other than indoor unit (outdoor unit, etc.)
Check code Symptom Remark E9 Indoor/outdoor unit communication error (Transmitting error) (Outdoor unit)
UP Compressor overcurrent interruption
U3, U4 Open/short of outdoor unit thermistors
UF Compressor overcurrent interruption (When compressor locked)
U2 Abnormal high discharging temperature/49C worked/insufficient refrigerant
U1, Ud Abnormal high pressure (63H worked)/Overheating safeguard operation

U5 Abnormal temperature of heat sink
U8 Outdoor unit fan safeguard stop
U6 Compressor overcurrent interruption/Abnormal of power module
U7 Abnormality of super heat due to low discharge temperature
U9, UH Abnormality such as overvoltage or voltage shortage and abnormal synchronous signal to main circuit/Current sensor error
– –
– –
Others Other errors (Refer to the technical manual for the outdoor unit.)
• On wired remote controller
Check code displayed in the LCD.
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
For details, check the LED display of the outdoor controller board

Symptom Cause Wired remote controller LED 1, 2 (PCB in outdoor unit)

PLEASE WAIT
PLEASE WAIT → Error code
Display messages do not appear even when operation switch is turned ON (operation lamp does not light up).
Note:
For about 2
minutes following power-on
After about 2 minutes has
expired following power-on
After LED 1, 2 are lighted, LED 2 is turned off, then only LED 1 is lighted. (Correct operation)
Only LED 1 is lighted. → LED 1, 2 blink.
Only LED 1 is lighted. → LED 1 blinks twice, LED 2 blinks once.
• For about 2 minutes following power-on, operation of the remote controller is not possible due to system start-up. (Cor rect operation)
• Connector for the outdoor unit’s protection device is not con nected.
• Reverse or open phase wiring for the outdoor unit’s power terminal block (L1, L2, L3)
• Incorrect wiring between indoor and outdoor units (incorrect polarity of S1, S2, S3)
• Remote controller wire short

Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED 1 (power for microcomputer) Indicates whether control power is supplied. Make sure that this LED is always lit. LED 2 (power for remote controller) Indicates whether power is supplied to the remote controller. This LED lights only in the case of the indoor unit which is connected to the outdoor unit refrigerant address “0”.
LED 3 (communication between indoor and outdoor units) Indicates state of communication between the indoor and outdoor units. Make sure that this LED is always blinking.
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8. Easy maintenance function
Display example (Comp discharge temperature 64°C)A C B
D
By using the maintenance mode, you can display many types of maintenance data on the remote controller such as the heat exchanger temperature and compressor current consumption for the indoor and outdoor units.
This function can be used whether the air conditioner is operating or not.
During air conditioner operation, data can be checked during either normal operation
or maintenance mode stable operation.
* This function cannot be used during the test run.
* The availability of this function depends on the connecting outdoor unit. Refer to the brochures.
Maintenance mode operation procedures

(1) Press the TEST button for three seconds to activate the maintenance mode.
Display A
MAINTENANCE

(2) Press the TEMP. buttons to set the refrigerant address. Display B
(3) Select the data you want to display.

Compressor information
Display A
Cumulative operation time COMP ON
ON/OFF number COMP ON
Operation current

MENU
x10 HOURS
x100 TIMES COMP ON CURRENT (A)

Outdoor unit information ON/OFF
Indoor unit information
Display A Display A
Heat exchanger temperature
OUTDOOR UNIT
H·EXC. TEMP
Indoor room
temperature INDOOR UNIT
Comp discharge temperature
OUTDOOR UNIT
OUTLET TEMP
Heat exchanger temperature
Outdoor ambient temperature
OUTDOOR UNIT
OUTDOOR TEMP
Filter operation time
Stable operation
Using the maintenance mode, the operation frequency can be fixed and the op eration can be stabilized. If the air conditioner is stopped, use the following proce

INLET TEMP INDOOR UNIT
H·EXC. TEMP INDOOR UNIT
FILTER USE H
* The filter operation time displayed is the number of hours the filter has been used since the filter reset was performed.
dure to start this operation.
Press the MODE button to select the operation mode.

(4) Press the FILTER button.
Stable operation
cancellation
Display A
Stable cooling operation
COOL
Stable heating operation
HEAT

(5) The data is displayed in C. (Airflow temperature display example)
Flashing
Display C
Approx.
STABLE MODE
Press the FILTER button.
STABLE MODE STABLE MODE CANCEL
Waiting for
response
* Repeat steps (2) to (5) to check another date.
10 sec. 64°C
Waiting for stable
operation
Display D
Stable
operation
10-20 min.

(6) Press the TEST button for three seconds or press the ON/OFF button to deactivate the maintenance mode.
* You can check the data using steps (3) to (5) of the maintenance mode opera tion procedures while waiting for the stable operation.

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This product is designed and intended for use in the residential, commercial and light-industrial environment.
• Low Voltage Directive 2006/95 EEC

The product at hand is based on the following EU regulations
• Electromagnetic Compatibility Directive 2004/ 108 EEC

Please be sure to put the contact address/telephone number on this manual before handing it to the customer.
HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
Authorized representative in EU: MITSUBISHI ELECTRIC EUROPE B.V.
HARMAN HOUSE, 1 GEORGE STREET, UXBRIDGE, MIDDLESEX UB8 1QQ, U.K.
RG79D721H01 Printed in Japan


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