Mitsubishi MSZ-HC35VA Service Manual

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ··································· 32. PART NAMES AND FUNCTIONS ····················· 43. SPECIFICATION ··

10MUZ-HC35VA-E2 MUZ-HC35VAB-E2

11Unit : mmOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop valve(with strainer)Stop

12MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCERefrigerant piping: mPiping size O.D: mmMax. LengthAMax. Height differenceBGas LiquidMUZ-HC

13The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi-tions vary according t

14Indoor intake air Dry-bulb temperature (°C)Outdoor intake air Wet-bulb temperature (°C) Outdoor intake air Wet-bulb temperature (°C) Indoor intake a

150 50 100 150(Hz)0.00.51.01.50 50 100 150(Hz)0.00.51.01.50 50 100 150(Hz)0.00.51.01.52.00 50 100 150(Hz)0.00.51.01.52.00 50 100 150

16kgf/cm2 [Gauge]MPa [Gauge]183215 205025603070 (%)35(°C)323070 (%)35(°C)0.20.40.60.81.01.224681012141.4Ambient temperature (°C)

17PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC25VACAPACITY: 2.5 kW SHF: 0.79 INPUT: 770 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21 25

18PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC25VACAPACITY: 2.5 kW SHF: 0.79 INPUT: 770 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35 40

19PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC35VACAPACITY: 3.15 kW SHF: 0.76 INPUT: 980 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21 2

2Revision A:•Table “ADDITIONAL REFRIGERANT CHARGE” of “7. REFRIGERANT SYSTEM DIAGRAM” has been corrected.Revision B:• MUZ-HC35VA-E2 and MUZ-HC35VAB-E2

20PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC35VACAPACITY: 3.15 kW SHF: 0.76 INPUT: 980 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35 4

21PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC35VABCAPACITY: 3.4 kW SHF: 0.76 INPUT: 1130 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21

22PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HC35VABCAPACITY: 3.4 kW SHF: 0.76 INPUT: 1130 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35

23PERFORMANCE DATA HEAT operation at Rated frequencyMUZ-HC25VACAPACITY: 3.2 kW INPUT: 880 WINDOORDB (°C)OUTDOOR WB (°C)-10 -5 0 5 10 15 20Q INPUT Q

24MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB9-2. R.V. COIL CONTROLHeating . . . . . . . . . . . . . . . . . ON Cooling . . . . . . . . . . . . . . . . . OFFD

2510-1. CHANGE IN DEFROST SETTING <JS> When the JS wire of the inverter P.C. board is cut/ soldered, the defrost finish temperature is changed.

26Outline of the functionThis air conditioner can memorize the abnormal condition which has occurred once.Even though LED indication listed on the tro

27 2. Flow chart of the detailed outdoor unit failure mode recall function 2.Blinking pattern when outdoor unit is abnormal:ONOFFNo beepBeepsRepeat

28 3. Outdoor unit failure mode tableThe upper lamp of OPERATION INDICTOR lamp (Indoor unit) Abnormal point (Failure mode / protection) LED indicatio

2911-3. TROUBLESHOOTING CHECK TABLENo. Symptom LED indication Abnormal point / Condition Condition Correspondence 1Outdoor unit does not oper-ate. 1-

3MUZ-HA25VA -E1 → MUZ-HC25VA -E1MUZ-HA35VA -E1 → MUZ-HC35VA -E1MUZ-HA35VA -E1 → MUZ-HC35VAB -E1 1. Outdoor model has been changed.MUZ-HC35VA -E1

3011-4. TROUBLE CRITERION OF MAIN PARTSMUZ-HC25VA MUZ-HC35VA MUZ-HC35VABPart name Check method and criterion FigureDefrost thermistor(RT61) Measur

3111-5. TROUBLESHOOTING FLOWAre the voltages balanced?Disconnect the connector (CN61) between compressor and the intelligent power module (IPM).Replac

32Refer to 11-5. “Check of compressor operation time”.Does the compressor operate continuously?Refer to 11-5. “Check of compressor start failure”.OK

33 F Check of compressor start failureAfter the compressor is heated with a drier, does the compressor start? 1Replace the compressor.Compressor sta

34 H Check of R.V. coil First of all, measure the resistance of R.V. coil to check if the coil is defective. Refer to 11-4. In case CN721 is not conn

35 J Check of power supplyIs there voltage 230 VAC between the indoor terminal block S1 and S2?NoYesReplace the indoor electronic control P.C. board.

36Replace the indoor power P.C. board and the indoor terminal P.C. board K How to check miswiring and serial signal errorTurn OFF the power supply.Is

37Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with the remote controller headed towards the indoor

38 M Electromagnetic noise enters into TV sets or radiosYesIs the unit earthed?NoEarth the unit.YesIs the distance between the antennas and the indoo

39-20 -10 0 10 20 30 400102030405060708090100Temperature (°C)Defrost thermistor (RT61)Temperature (°C)Discharge temperature thermistor (RT62)0 1020304

4ACCESSORIESAir outletDrain outletPipingDrain hoseAir inletMUZ-HC25VA MUZ-HC35VA MUZ-HC35VABDrain socket 12PART NAMES AND FUNCTIONS

4012-1. MUZ-HC25VA MUZ-HC35VA MUZ-HC35VABNOTE: Turn OFF power supply before disassembling.OPERATING PROCEDURE PHOTOS1. Removing cabinet and panels(1

41OPERATING PROCEDURE PHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the e

42OPERATING PROCEDURE PHOTOS5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the connectors for outdoor fan

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HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistributed in Au

5Outdoor model MUZ-HC25VA MUZ-HC35VA MUZ-HC35VAB Function Cooling Heating Cooling Heating Cooling Heating Power supply Single phase 230 V, 50 Hz Ca

6Specifi cations and rating conditions of main electric partsModel Item MUZ-HC25MUZ-HC35VA- E1 MUZ-HC35VAB- E1MUZ-HC35VA- E2 MUZ-HC35VAB- E2Current tra

790807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BARBAND CENTER

820.8144.689.6255145.5Service panelService portAir outLiquid refrigerant pipe jointRefrigerant pipe (flared) ø6.35Gas refrigerant pipe jointRefrigeran

9MUZ-HC25VA MUZ-HC35VA-E1 MUZ-HC35VAB-E16WIRING DIAGRAM