Mitsubishi Electric MSZ-HJ35VA-E1 Manuel de service

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ··································· 32. PART NAMES AND FUNCTIONS ····················· 33. SPECIFICATION ··

10MUZ-HJ50VAOBH648A

11Unit : mmMUZ-HJ25VA MUZ-HJ35VAMUZ-HJ50VAOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connecti

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

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 1001500.51.01.50 50 1001500.51.01.50 50 1001500.51.01.50 50 1001500.51.01.50 50 1001500.51.01.50 50 1001500.51.01.50 50 1001500.51.01.50 50 100

16Outdoor low pressureMUZ-HJ25VAMUZ-HJ35VA MUZ-HJ50VA45678934567823456715 20 25 30 350.40.50.60.70.80.915 20 25 30 350.30.40.50.60.70.815 20 25 30 350

17PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ25VACAPACITY: 2.5 kW SHF: 0.89 INPUT: 730 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21 25

18PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ25VACAPACITY: 2.5 kW SHF: 0.89 INPUT: 730 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35 40

19PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ35VACAPACITY: 3.15 kW SHF: 0.87 INPUT: 1040 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21

2<Preparation before the repair service> Prepare the proper tools. Prepare the proper protectors. Provide adequate ventilation. After stoppi

20PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ35VACAPACITY: 3.15 kW SHF: 0.87 INPUT: 1040 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35

21PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ50VACAPACITY: 5.0 kW SHF: 0.70 INPUT: 2050 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)21 2

22PERFORMANCE DATA COOL operation at Rated frequencyMUZ-HJ50VACAPACITY: 5.0 kW SHF: 0.70 INPUT: 2050 WINDOORDB (°C)INDOORWB (°C)OUTDOOR DB (°C)35 4

23PERFORMANCE DATA HEAT operation at Rated frequencyMUZ-HJ25VACAPACITY: 3.15 kW INPUT: 870 WINDOORDB (°C)OUTDOOR WB (°C)-10 -5 0 5 10 15 20Q INPUT Q

24MUZ-HJ25VA MUZ-HJ35VA MUZ-HJ50VA9-2. R.V. COIL CONTROL R.V. COIL CONTROL MUZ-HJ25VA MUZ-35VAHeating . . . . . . . . . . . . . . . . . OFF Coo

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

283. Outdoor unit failure mode tableThe upper lamp of OPERATION INDICATOR lamp(Indoor unit) Abnormal point (Failure mode/protection) LED indication(Ou

2911-3. TROUBLESHOOTING CHECK TABLENo. Symptom LED indication Abnormal point/ Condition Condition Remedy 1Outdoor unit does not op-erate. 1-time fl as

3MUZ-HJ25VA -E1MUZ-HJ35VA -E1MUZ-HJ50VA -E1 1. New model1TECHNICAL CHANGESACCESSORIESAir outletDrain outletPipingDrain hoseAir inlet(Back and side)MU

3011-4. TROUBLE CRITERION OF MAIN PARTSMUZ-HJ25VA MUZ-HJ35VA MUZ-HJ50VAPart name Check method and criterion FigureDefrost thermistor(RT61) Measure

3111-5. TROUBLESHOOTING FLOWAre the voltages balanced?Disconnect the connector (CN61) between compressor and the power module (IC700).Replace the inve

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 st

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

35Check the resistance of fan motor. (Refer to 11-4.)Is the resistance of fan motor normal?Replace the outdoor fan motor.Disconnect the connector CN77

36 K Check of LEV (Expansion valve)Press OPERATE/STOP (ON/OFF) button of the remote controller (the set temperature is displayed) with the remote con

37Check the outdoor fan motor. (Refer to 11-5. .)Is the fuse (F901) blown on the in-verter P.C. board?Check the connection of the connectors (CN931, C

38 M How to check miswiring and serial signal error1 Make sure that the wiring is correct. If the pro-cedure is performed without correcting miswir-i

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

43SPECIFICATIONOutdoor model MUZ-HJ25VA MUZ-HJ35VAPower supply Single phase, 230 V, 50 HzCapacity Rated frequency (Min.-Max.)CoolingkW2.5 (1.3 - 3.0

40-20 -10 0 10 20 30 400102030405060708090100Temperature (°C)Defrost thermistor (RT61)Temperature (°C)Discharge temperature thermistor (RT62)0 1020304

41-20 -10 0 10 20 30 400102030405060708090100Temperature( )Defrost thermistor(RT61)Outdoor heat exchanger temperature thermistor(RT68)Temperature(

12-1. MUZ-HJ25VA MUZ-HJ35VANOTE: Turn OFF power supply before disassembly.OPERATING PROCEDURE PHOTOS1. Removing the cabinet and the panels(1) Remove

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

OPERATING PROCEDURE PHOTOS4. Removing the discharge temperature thermistor and the defrost thermistor(1) Remove the cabinet and the panels. (Refer to

12-2. MUZ-HJ50VANOTE: Turn OFF power supply before disassembly.OPERATING PROCEDURE PHOTOS1. Removing the cabinet and the panels(1) Remove the screw fi

OPERATING PROCEDUREPHOTOS2. Removing the inverter assembly, inverter P.C. board(1) Remove the cabinet and the panels. (Refer to 1.)(2) Disconnect the

OPERATING PROCEDUREPHOTOS5. Removing the outdoor fan motor(1) Remove the cabinet and the panels. (Refer to 1.)(2) Disconnect the following connectors:

© Copyright 2012 MITSUBISHI ELECTRIC CORPORATIONDistributed in Mar. 2013. No. OBH648 REVISED EDITION-ADistributed in Dec. 2012. No. OBH648Made in Ja

5Outdoor model MUZ-HJ50VAPower supply Single phase, 230 V, 50 HzCapacity Rated frequency (Min.-Max.)CoolingkW5.0 (1.3 - 5.0)Heating 5.4 (1.4 - 6.5)B

6Specifi cations and rated conditions of main electric partsModel Item MUZ-HJ25VA MUZ-HJ35VASmoothing capacitor (C61) 800 μF 420 V Diode module(DB61)

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

8Unit : mmMUZ-HJ25VA MUZ-HJ35VA5OUTLINES AND DIMENSIONSREQUIRED SPACE100 mm or more350 mm or more200 mm or more100 mm or more100 mm or moreMUZ-HJ50VA

9MUZ-HJ25VA 6WIRING DIAGRAMMUZ-HJ35VAOBH648A