msz-gc35va

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10-4. Troubleshooting check tableBefore taking measures, make sure that the symptom reappears for accurate troubleshooting.When the indoor unit has started operation and the following detection method has detected an abnormality (the firstdetection after the power ON), the indoor electronic control P.C. board turns OFF the indoor fan motor withOPERATION INDICATOR lamp flashing.OPERATION INDICATORLightedBlinkingNot lightedNo.1AbnormalpointMis-Wiringor serialsignalOperation indicator lamp SymptomCondition CorrespondenceUpper lamp flashes.0.5-second ON0.5-second OFFThe serial signal from the outdoor unit is notreceived for 6 minutes.• Refer to 10-6.D "How to checkmis-wiring and serial signalerror".23Indoor coilthermistorRoomtemperaturethermistorIndoor fanmotorUpper lamp flashes.2-time flash2.5-second OFFUpper lamp flashes.3-time flash2.5-second OFFThe indoor coil or the room temperaturethermistor is short or open circuit.The rotational frequency feedback signal isnot emitted during the indoor fan operation.• Refer to 10-7.thecharacteristics of indoor coilthermistor, and the roomtemperature thermistor.• Refer to 10-6.A "Check ofindoor fan motor".456IndoorcontrolsystemOutdoorpowersystemUpper lamp flashes.4-time flashUpper lamp flashes.5-time flash2.5-second OFF2.5-second OFFUpper lamp flashes.6-time flashOutdoorthermistors2.5-second OFFIndoor unitand outdoorunit do notoperate.It cannot properly read data in the nonvolatilememory of the indoor electronic control P.C.board.It consecutively occurs 3 times that thecompressor stops for overcurrent protection orstart-up failure protection within 1 minute afterstart-up.The outdoor thermistors short or open circuitduring the compressor operation.• Replace the indoor electroniccontrol P.C. board.• Refer to "How to check ofinverter/compressor".Refer to outdoor unit servicemanual.• Check the stop valve.• Refer to "Check of outdoorthermistor".Refer to outdoor unit servicemanual.7OutdoorcontrolsystemUpper lamp flashes.7-time flash2.5-second OFFIt cannot properly read data in the nonvolatilememory of the inverter P.C. board or theoutdoor electronic control P.C. board.• Replace the inverter P.C.board or the outdoorelectronic control P.C. board.Refer to outdoor unit servicemanual.8OtherabnormalityUpper lamp flashes.14-time flash2.5-second OFFAn abnormality other than above mentioned isdetected.• Check the stop valve.• Confirm the abnormality indetail using the failure moderecall function for outdoorunit.9OutdoorcontrolsystemUpper lamp lights upOutdoor unitdoes notoperate.It cannot properly read data in the nonvolatilememory of the inverter P.C. board or theoutdoor electronic control P.C. board.• Check the blinking pattern ofthe LED on the inverter P.C.board or the outdoorelectroniccontrol P.C. board.18
OPERATION INDICATORNo.1AbnormalpointAttachmentof thehorizontalvaneOperation indicator lamp SymptomCondition CorrespondenceAll lamps flash at the same time.0.5-second ON0.5-second OFFIndoor unitand outdoorunit do notoperate.The electricity is not conducted to the interlockswitch (Fan) of the horizontal vane.• Refer to 10-6.E "Check ofinstallation of the horizontalvane".OPERATION INDICATORNo.1AbnormalpointMXZ typeOperationmodesettingOperation indicator lamp SymptomCondition CorrespondenceUpper lamp lights and lower lamp flashes.2.5-second OFFOutdoor unitoperates butindoor unitdoes notoperate.The operation mode of the each indoorunit is differently set to COOL(includes DRY)and HEAT at the same time, the operationmode of the indoor unit that has operated atfirst has the priority.• Unify the operation mode.Refer to outdoor unit servicemanual.10-5. Trouble criterion of main partsMSZ-GC22VA MSZ-GC25VA MSZ-GC35VAPart nameRoom temperaturethermistor (RT11)Indoor coil thermistor(RT12, RT13)Measure the resistance with a tester.Check method and criterionRefer to 10-7."Test point diagram and voltage","2.Indoor electronic control P.C. board", the chart of thermistor.FigureIndoor fan motor (MF)INNER FUSEBA : 135i3: CUT OFFCA : 140i2: CUT OFFMotor partSensor partMeasure the resistance between the terminals with a tester.(Part temperature 10˚C ~ 30˚C)Color of lead wireWHT – BLKBLK – REDMeasure the voltage power ON.Color of lead wireBRN – YLWBRN – GRYRC4V18-BA273 " ~ 296 "295 " ~ 320 "NormalRC4V18-CA308 " ~ 334 "295 " ~ 320 "Normal4.5 ~ 5.5V(When fan revolved one time)0V➔5V➔0V(Approx.)FUSEBLKMAINAUX.BRNYLWGRYREDWHTVane motor (MV)Measure the resistance between the terminals with a tester.(Part temperature 10°C ~ 30°C)Color of the lead wire NormalRED-BLK 235 " ~ 255 "BLKBLKREDBLKROTORBLK19
Page 1 and 2: SPLIT-TYPE, HEAT PUMP AIR CONDITION
Page 3 and 4: MSZ-GC22VAMSZ-GC25VAMSZ-GC35VAACCES
Page 5 and 6: 5OUTLINES AND DIMENSIONSMSZ-GC22VAM
Page 7 and 8: 8SERVICE FUNCTIONSMSZ-GC22VAMSZ-GC2
Page 9 and 10: 9MICROPROCESSOR CONTROLMSZ-GC22VAMS
Page 11 and 12: NOTE 2FOR MULTI SYSTEM AIR CONDITIO
Page 13 and 14: 2. To release the timerTo release O
Page 15 and 16: 10-2. Failure mode recall functionO
Page 17: 10-3. Instruction of troubleshootin
Page 21 and 22: The unit does not operate with the
Page 23 and 24: When All lamps flash ON and OFF eve
Page 25 and 26: 10-7. Test point diagram and voltag
Page 27 and 28: OPERATING PROCEDURE2. Removing the

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