Pioneer MUH-GA35VB Manuel d'utilisateur

SERVICE MANUALCONTENTS1. TECHNICAL CHANGES ····································22. PART NAMES AND FUNCTIONS······················63. SPECIFICATION····

10REFRIGERANT SYSTEM DIAGRAM7OUTDOOR UNIT(with heat insulator)Refrigerant pipe [ 9.524-way valveDefrostthermistorRT61MufflerOutdoorheatexchangerCapill

11 Piping size O.D : mm Length of connecting pipe : mModelRefrigerant pipingMax. length : m A2025Indoor unitGas 0.43Liquid 0.5 Liquid6.35Gas9.52Out

12MSC-GA20VB - E1MUH-GA20VB - E1 MUH-GA35VB - E1 MSC-GA35VB - E1MUH-GA25VB - E1 MSC-GA25VB - E18.57.87.16.45.85.110.09.28.37.56.86.011.010.09.18.27.46

138-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENTCOOL operation① Both indoor and outdoor unit are under the same temperature/humidity condition.➁ Ai

14HEAT operationCondition indoor:Dry bulb temperature 20.0°CWet bulb temperature 14.5°COutdoor:Dry bulb temperature 7,15,20°CWet bulb temperature 6,12

15MSC-GA20VB - : MUH-GA20VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 2.70 1.51 0.56 572 2.59 1.45 0.56 601 2.48 1.39 0.56 629 2.39 1.34 0.56

16MSC-GA20VB - : MUH-GA20VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 2.25 1.26 0.56 701 2.07 1.16 0.56 744 1.99 1.11 0.56 75821 20 2.37 1.04

17MSC-GA25VB - : MUH-GA25VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 3.11 1.62 0.52 656 2.98 1.55 0.52 689 2.86 1.49 0.52 722 2.76 1.43 0.52

18MSC-GA25VB - : MUH-GA25VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 2.60 1.35 0.52 804 2.39 1.24 0.52 853 2.29 1.19 0.52 86921 20 2.73 1.09

19MSC-GA35VB - : MUH-GA35VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 4.11 1.97 0.48 872 3.94 1.89 0.48 916 3.78 1.81 0.48 959 3.64 1.75 0.48

TECHNICAL CHANGES21MUH-A07YV- ➔MUH-GA20VB-1. Indication of capacity has been changed. (BTU base ➔ kw)2. Dimension of outdoor unit has been changed. (7

20MSC-GA35VB - : MUH-GA35VB -E1E1PERFORMANCE DATACOOL operation (230V)21 18 3.43 1.65 0.48 1068 3.15 1.51 0.48 1134 3.03 1.45 0.48 115521 20 3.61 1

21MSC-GA20VB - : MUH-GA20VB -E1E1PERFORMANCE DATAHEAT operation (230V)MSC-GA25VB - : MUH-GA25VB -E1E1OUTDOOR WB(:)INDOOR-10 -5 0 5 10 15 20DB(

22TROUBLESHOOTING103. Troubleshooting procedure1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate a

2310-2. Instruction of troubleshootingStartIndoor unit operates.Outdoor unit doesn't operate.Indoor unit doesn't receive the signal from re

24AACheck of outdoor unitCompressor and/or outdoor fan motor doesn’t operate.YesCompressor doesn't operate.YesYesIs there 230V AC between 3 on th

25BB Check of outdoor unitDoes compressor stop?NoYesIs there 230V AC between 3 on thecompressor contactor (52C) and N on the outdoor terminal block (

26DDHow to check mis-wiring and serial signal errorSerial signal error is indicated.(0.5-sec. ON, 0.5-sec. OFF)1. Turn OFF the power supply(indoor/out

27EE Check of outdoor thermistorMeasure resistance between CN 661 1 and 2.NoYesReplace the thermistor.Defrost thermistor (RT61)Reconnect CN661.Turn O

28MUH-GA20VB -MUH-GA25VB -MUH-GA35VB -Outdoor deicer P.C. boardE1E1E1CN711Outdoor fan motor 230V ACCN721R.V. coil230V ACF61Fuse2A/250V}}CN661 1-2De

29DISASSEMBLY INSTRUCTIONS11MUH-GA20VB - MUH-GA25VB - MUH-GA35VB -OUTDOOR UNITE1E1E1OPERATING PROCEDURE PHOTOS1. Removing the cabinet(1) Remove the sc

3RefrigerationoilRefrigerantNew refrigerantR410AHFC-32: HFC-125 (50%:50%)Pseudo-azeotropic refrigerantNot includedA1/A172.6-51.41.55764Non combustible

303. Removing the propeller and the outdoor fan motor(1) Remove the cabinet. (Refer to 1.)(2) Remove the propeller nut.(3) Remove the propeller.NOTE :

31OPERATING PROCEDURE PHOTOS4. Removing the compressor(1) Remove the cabinet. (Refer to 1.)(2) Remove the relay panel.(3) Remove the soundproof felt.(

32PARTS LIST1222352211(W) 1512-1. OUTDOOR UNIT STRUCTURAL PARTSMUH-GA20VB - MUH-GA25VB - MUH-GA35VB -E1E1E1417 14192018136 78910 11121623(W) This f

33Part numbers that are circled are not shown in the illustration.123456789101112131415161718192021222324252627282930313233E02 904 630E02 905 630E

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CCCopyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTDDistributed in Feb. 2005. No.OB387 6Made in JapanNew publication, effective Feb. 2005Specifica

42.Refrigerant piping1 SpecificationsUse the refrigerant pipes that meet the following specifications.• Use a copper pipe or a copper-alloy seamless p

5R410APipe diametermm6.359.521722Dimension of flare nutR2217222 Flaring work and flare nutFlaring work for R410A pipe differs from that for R22 pipe.F

6PART NAMES AND FUNCTIONS2( )Air inletAir outletDrain outletPipingDrain hoseback : MUH-GA20VBback and side : MUH-GA2

7NOISE CRITERIA CURVES490807060504030201063 125 250 500 1000 2000 4000 8000APPROXIMATETERESHOLD OFHEARING FORCONTINUOUSNOISENC-60NC-50NC-40NC-30NC-20N

8OUTLINES AND DIMENSIONS51069800302.5500 Bolt pitch for installation15022.3Handle550280164.599.5170.523Service panelService port285344.544400Air inAir

9WIRING DIAGRAM6MODELS WIRING DIAGRAMSYMBOLT61TB1,TB221S452CSYMBOLMFNR61RT61SR61,SR62SYMBOLC1C65DSARF61MCNAMENAME NAMECOMPRESSOR CAPACITOROUTDOOR FAN