Mitsubishi Electric MSZ-GA25VA - E3 Manual de servicio

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS······················23. SPECIFICATION····

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117REFRIGERANT SYSTEM DIAGRAMUnit:mmOutdoorheatexchangerFlared connectionDefrostthermistorRT61DischargetemperaturethermistorRT62Flared connectionStop

12ADDITIONAL REFRIGERANT CHARGE (R410A:g)Outdoor unit precharged75085014m7m6m5m 11mModel Refrigerant piping length (one way)8m9m10m12m 13m 15m 20m2700

138 PERFORMANCE CURVESThe standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions.S

NOTE:The above broken lines are for the heating operation without any frost and defrost operation.14Indoor air Wet-bulb temperaturedifference (degree)

15Correction of Cooling total inputInput correction factorsThe operational frequency of compressorCorrection of Cooling capacityCapacity correction fa

16kgf/F [Gauge]MPa [Gauge]183215 205025603070 (%)35(˚C)323070 (%)35(˚C)0.20.40.60.81.01.224681012141.4Ambient temperature(˚C) Am

17MUZ-GC25VA MUZ-GC25VAH21 1821 2022 1822 2022 2223 1823 2023 2224 1824 2024 2224 2425 1825 2025 2225 2426 1826 2026 2226 2426 2627 1827 2027 2227 242

1821 1821 2022 1822 2022 2223 1823 2023 2224 1824 2024 2224 2425 1825 2025 2225 2426 1826 2026 2226 2426 2627 1827 2027 2227 2427 2628 1828 2028 2228

1921 1821 2022 1822 2022 2223 1823 2023 2224 1824 2024 2224 2425 1825 2025 2225 2426 1826 2026 2226 2426 2627 1827 2027 2227 2427 2628 1828 2028 2228

PART NAMES AND FUNCTIONS221TECHNICAL CHANGESACCESSORIESAir outletDrain outletPipingDrain hoseAir inletAir outletDrain outletPipingDrain hoseAir inlet1

2021 1821 2022 1822 2022 2223 1823 2023 2224 1824 2024 2224 2425 1825 2025 2225 2426 1826 2026 2226 2426 2627 1827 2027 2227 2427 2628 1828 2028 2228

21PERFORMANCE DATA HEAT operation at Rated frequencyCAPACITY:3.2(kW)INPUT:835(W)OUTDOOR WB(:)INDOOR-10 -5 0 5 10 15 20DB(:)Q INPUT Q INPUT Q INPUT

229ACTUATOR CONTROLMUZ-GC25VA MUZ-GC35VAMUZ-GC25VAH MUZ-GC35VAH9-3. Relation between main sensor and actuator9-2. R.V. coil controlHeating. . . . . .

23SERVICE FUNCTIONS1010-1. CHANGE IN DEFROST SETTING<JS> When the JS wire of the outdoor Inverter P.C. board is cut/ soldered, the defrost finis

24 Operational procedureYes(Blinks)No(OFF)YesNoReleasing the failure mode recall functionNOTE: 1. Make sure to release the failure mode recall functio

252. Flow chart of the detailed outdoor unit failure mode recall functionOperational procedureNOTE: 1. Make sure to release the failure mode recall fu

263. Outdoor unit failure mode table2-time flash2.5 seconds OFF3-time flash2.5 seconds OFF4-time flash2.5 seconds OFF5-time flash2.5 seconds OFF6-time

27ONOFF2.5-second OFF2.5-second OFFThe flashing frequency shows the number of times the LED blinks after every 2.5-second OFF.(Example) When the flash

2811-4. Trouble criterion of main partsMUZ-GC25VA MUZ-GC35VAMUZ-GC25VAH MUZ-GC35VAHPart name FigureCheck method and criterionOutdoor fan motor (MF)INN

29Check of open phaseBHow to check inverter/ compressorAWhen OPERATION INDICATOR lamp flashes 5-times.Outdoor unit does not operate.Check the voltageb

33SPECIFICATION4.20.24KNB065FDTH(C)500RA6V21-AB or BB684o540o2552610.75Cooling2.5 (0.9-3.0)1.41,8123.6665803.143.7646810Heating3.2 (0.9-4.5)—1,7884.28

30Check of compressor windingCheck of compressor operation time● Disconnect the connector (CN61) between the compressor and intelligent power module,

31Check of outdoor thermistorsGWhen OPERATION INDICATOR lamp flashes 6-time.The thermistors in the outdoor unit are abnormal.Check of R.V. coilHMeasur

32Check of outdoor fan motorIOutdoor fan motor does not operate.Replace the outdoor fan motor.Does upper lamp of OPERATION INDICATOR lamp on the indoo

33Outdoor unit does not operate at all, or stops immediately due to overcurrent.Check of current-limiting resistorKWhen the current-limiting resistor

34Check of LEV (Expansion valve)LHeating/Cooling does not work sufficiently.Replace the LEV.Expansion valve operates in full-opening direction. Is LEV

35Check of inverter P.C. boardMYes(10-time flash)YesCheck the LED indication onthe inverter P.C. board.Does the LED flash 10-time?NoNoIs the fuse (F90

36How to check mis-wiring and serial signal error (when outdoor unit does not work)N• When unit cannot operate neither by the remote controller nor by

37Electromagnetic noise enters into TV sets or radiosOReplace or repair the antenna.Replace or repair the coaxial cable.NoNoNoYesYesNoNoYesYesYesIs th

38Check of defrost heaterPReplace the inverter P.C. board.Is there 230V AC between CN722 1 and 3 on the inverter P.C. board(GC25) or power P.C. board

39-20 -10 0 10 20 30 400102030405060708090100Temperature(:)Defrost thermistor(RT61)Ambient temperature thermistor(RT65)Temperature(:)Discharge tempera

4ModelItemCurrent transformer Smoothing capacitor Diode module

40Back side of unitOutput to driveoutdoor fan motor(CN932)Fin temperaturethermistor/RT64(CN642)Ambient temperature thermistor /RT65(CN643)Discharge te

41Heater connector(CN722) MUZ-GC35VAHR.V.coil(CN721)230V AC230V ACBack side of unitMUZ-GC35VAMUZ-GC35VAHFront side of unitConnecting wire withinverter

4212DISASSEMBLY INSTRUCTIONSOPERATING PROCEDUREPHOTOSPhoto 11. Removing cabinet and panels(1) Remove the screw fixing the service panel. (See Photo 2.

433. Removing R.V. coil (1) Remove the cabinet and panels. (Refer to 1.)(2) Remove the R.V. coil. (See Photo 5.)OPERATING PROCEDUREPHOTOS2. Removing t

44OPERATING PROCEDUREPHOTOSPhoto 6Photo 75. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the connectors fo

45OPERATING PROCEDUREPHOTOSPhoto 11. Removing the cabinet(1) Remove the screw fixing the service panel. (See Photo 2.)(2) Pull down the service panel

464. Removing the discharge temperature thermistor anddefrost thermistor (1) Remove the cabinet and panels. (Refer to 1.)(2) Pull out the discharge te

47OPERATING PROCEDUREPHOTOSPhoto 6Defrostthermistor5. Removing outdoor fan motor(1) Remove the cabinet and panels. (Refer to 1.)(2) Disconnect the con

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

54NOISE CRITERIA CURVES90807060504030201063 125 250 500 1000 2000 4000 8000NC-60NC-50NC-40NC-30NC-20NC-70OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.000

6OUTLINES AND DIMENSIONS520.8144.689.6255145.5Service panelService portAir outLiquid refrigerant pipe jointRefrigerant pipe (flared) [6.35Gas refriger

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