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MMU-AP0071MH
MMU-AP0091MH
MMU-AP0121MH
MMU-AP0151MH
MMU-AP0181MH
• This Service Manual describes contents of the Compact 4-Way Air Discharge Cassette indoor unit.
For the outdoor unit, refer to the Manual with FILE No. A03-009, A05-004, A05-015.
PRINTED IN JAPAN, Apr., 2006 ToMo
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CONTENTS SAFETY CAUTION ............................................................................................ 3 1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) ........................................ 8 2. WIRING DIAGRAM ..................................................................................... 9 3. PARTS RATING........................................................................................ 10 4. REFRIGERATING CYCLE DIAGRAM ......................................................
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SAFETY CAUTION 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, and keep them. WARNING Before troubleshooting or repair work, check the earth wire is connected to the earth terminals of the main unit, otherwise an electric shock is caused when a leak occurs. If the earth wire is not correctly connected, contact an electric
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WARNING After repair work, surely assemble the disassembled parts, and connect and lead the removed cables as before. Perform the work so that the cabinet or panel does not catch the inner cables. If incorrect assembly or incorrect cable connection was done, a disaster such as a leak or Assembly/Cabling fire is caused at user’s side. After the work has finished, be sure to use an insulation tester set (500V mugger) to check the resistance is 2MW or more between the charge section and the non-
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New Refrigerant (R410A) This air conditioner adopts a new HFC type refrigerant (R410A) which does not deplete the ozone layer. 1. Safety Caution Concerned to New Refrigerant The pressure of R410A is high 1.6 times of that of the former refrigerant (R22). Accompanied with change of refrigerant, the refrigerating oil has been also changed. Therefore, be sure that water, dust, the former refriger- ant or the former refrigerating oil is not mixed into the refrigerating cycle of the air conditioner
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4. Tools (1) Required Tools for R410A Mixing of different types of oil may cause a trouble such as generation of sludge, clogging of capillary, etc. Accordingly, the tools to be used are classified into the following three types. 1) Tools exclusive for R410A (Those which cannot be used for conventional refrigerant (R22)) 2) Tools exclusive for R410A, but can be also used for conventional refrigerant (R22) 3) Tools commonly used for R410A and for conventional refrigerant (R22) The table below sho
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5. Recharge of Refrigerant When recharge of the refrigerant is required, charge the new refrigerant with the specified amount in the procedure as described below. Recover the refrigerant and check there is no refrigerant in the equipment. When the pressure has lowered until indication of the compound gauge pointed -0.1MPa (–76cmHg), open fully the handle Low and turn off the power of vacuum pump. Connect the charge hose to the packed valve service ports at gas side, liquid side, and balance
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1. CONSTRUCTION VIEWS (EXTERNAL VIEWS) 200 595 to 660 Ceiling open dimension 1000 or more Check port ( 450) Check port (o 450) Check port ( 450) Obustacle Drain-up standing-up size Indoor unit 1000 or more Bottom face of ceiling Note) As ABS is used for the drain discharge port of the main unit, the vinyl chloride paste cannot be used. Space required for Use the flexible hose (Band fix) included in the package. installation and servicing 4 • Wired remote controller (RBC-AMT31E) 16 120
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2. WIRING DIAGRAM PMV TC1 TA TCJ TC2 6 4 3 1 2 5 FS 6 4 3 1 2 5 CN309 (YEL) 1 2 3 4 5 6 1 3 1 3 1 2 1 2 1 2 1 2 3 4 5 6 1 2 3 1 2 3 1 2 1 2 1 2 3 1 CN41 CN333 CN82 (BLU) CN100 CN34 CN104 CN102 CN101 (BLU) (WHI) (BRW) (RED) (YEL) (RED) (BLK) BLK 5 5 3 3 2 Motor BLK 3 3 1 1 drive circuit CN40 1 1 (BLU) BLU 5 2 2 CN334 BLU 1 5 1 (WHI) 5 5 U1 U2 A B 4 4 3 2 1 CN71 (CHK) WHI BLK 1 1 2 CN68 1 1 2 (BLU) CN72 (DISP) 2 1 2 U1 U2 1 1 CN001 RY302 DP Outdoor (WHI) 3 3 unit Adapter for Wireed 1 3 wireless re
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3. PARTS RATING 3-1. Parts Rating Model MMU- AP0071MH AP0091MH AP0121MH AP0151MH AP0181MH Fan motor SWF-230-60-1R Motor for horizontal grille MP24Z3N Pulse motor EDM-MD12TF-3 Pulse motor valve EDM-B25YGTF-3 EDM-B40YGTF-3 TA sensor Lead wire length : 155mm Vinyl tube TC1 sensor Ø4 size lead wire length : 1400mm Vinyl tube TC2 sensor Ø6 size lead wire length : 1500mm Vinyl tube (Black) TCJ sensor Ø6 size lead wire length : 1400mm Vinyl tube (Red) Float switch FS-0218-103 Drain pump motor ADP-14
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3-3. Parts Name of Remote Controller Display section CODE No. SET DATA SETTING TEST UNIT No. Display In the display example, all indicators are displayed for the explanation. R.C. No. section H In reality only, the selected contents are indicated. TEMP. ON / OFF When turning on the leak breaker at the first time, [SET DATA] flashes on the TIMER SET FAN MODE display part of the remote controller. While this display is flashing, the model is Operation TIME SWING/FIX VENT section being autom
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Operation section Push each button to select a desired operation. This remote controller can operate the maximum 8 indoor units. The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing ON / OFF button only. 1 7 TEMP. ON / OFF 8 10 TIMER SET FAN MODE 2 9 TIME SWING/FIX VENT 4 FILTER RESET TEST SET CL UNIT 6 5 3 ON / OFF 1 Air volume select button 8 button Selects the desired air volume mode. When the button is pushed, the operation starts
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3-4. Correct Usage When you use the air conditioner for the first time or when you change the SET DATA value, follow the proce- dure below. From the next time, the operation displayed on the remote controller will start by pushing the ON / OFF button only. Preparation Turn on the main power switch and/or the leakage breaker. When the power supply is turned on, a partition line is displayed on the display part of the remote controller. * After the power supply is turned on, the remote controll
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3-5. Automatic Operation (Super Heat Recovery Type Only) When you set the air conditioner in mode or switch over from AUTO operation because of some settings change, it will automatically select either cooling, heating, or fan only operation depending on the indoor tem- perature. TEMP. ON / OFF 1 3 TIMER SET FAN MODE 2 TIME SWING/FIX VENT FILTER RESET TEST SET CL UNIT Start ON / OFF 1 button Push this button to start the air conditioner. 2 Mode select button (MODE) Select Auto. 3 Temperature
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3-6. TIMER Operation A type of timer operation can be selected from the following three types. OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time. Timer operation TEMP. ON / OFF TIMER SET FAN MODE 1 TIME SWING/FIX VENT FILTER RESET TEST SET CL UNIT 2 3 4 1 Push TIMER SET button. OFF OFF ON The timer disp
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3-7. Adjustment of Wind Direction While the air conditioner stops, the horizontal flap (Up/Down air direction adjustment plate) automati- cally directs upward. While the air conditioner is in ready status for heating, the horizontal flap (Up/Down air direction adjustment plate) directs upward. The swinging operation starts after heating ready status has been cleared, but “SWING ” is displayed on the remote controller even if the status is ready to heating. How to set up the air direction
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3-8. Information Confirmation before operation Protective device (High pressure switch) Turn on the power switch 12 hours before starting This device stops automatically an operation when the operation. excessive force is applied on the air conditioner. Make sure whether earth wire is connected. If the protective device works, the operation stops and the operation lamp flashes. Make sure the air filter is connected to the indoor TEST unit. When the protective device works, the indication
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3-9. Air Conditioner Operations and Performance 3 minutes protection function 3-minutes protection function prevents the air conditioner from starting for initial 3 minutes after the main power switch/circuit breaker is turned on for re-starting the air conditioner. Power failure Power failure during operation will stop the unit completely. To restart the operation, push the START/STOP button on the remote controller. Lightning or a wireless car telephone operating nearby may cause the unit
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3-10. When the Following Symptoms are Found Check the points described below before asking repair servicing. Symptom Cause Outdoor unit White misty cold air Fan of the outdoor unit stops automatically and performs defrost or water is out. operation. Sometimes, noise Solenoid valve works when defrost operation starts or finishes. “Pushu !” is heard. Indoor unit “ Swish” sound is When the operation has started, during the operation, or immediately heard sometimes. after the operation ha
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Accessory parts and Parts to be procured locally 1 PRECAUTIONS FOR SAFETY Ensure that all Local, National and International regulations are satisfied. Accessory parts Important safety information are described in this installation manual. Please ensure this manual is read thoroughly and kept for future reference. Part name Q’ty Shape Usage After the installation work, perform a trial operation to check for any problem. Follow the Owner’s Manual to explain how to use and maintain the unit to th
