Manuals / Pioneer / Household Appliance / Air Conditioner

Pioneer MUH-GA20VB, MUH-GA35VB, MUH-GA25VB service manual

Models: MUH-GA20VB MUH-GA25VB MUH-GA35VB

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Pioneer MUH-GA20VB, MUH-GA35VB, MUH-GA25VB service manual

Contents

Wireless type Models CONTENTSSPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OB387MUH-A12YV- E1 MUH-GA35VB- E1 TECHNICAL CHANGESMUH-A07YV- E1 MUH-GA20VB- E1 MUH-A09YV- E1 MUH-GA25VB- E1Refrigerant Description liquidR410A tools Can R22 tools be used?5.Additional charge 3.Refrigeration oil4.Air purge OUTDOOR UNIT 3 SPECIFICATIONACCESSORIES PART NAMES AND FUNCTIONSMUH-GA35VB NOISE CRITERIA CURVESMUH-GA20VB MUH-GA25VBMUH-GA35VB- E1 OUTLINES AND DIMENSIONSMUH-GA20VB- E1 OUTDOOR UNIT MUH-GA25VB- E1MUH-GA20VB- E1 OUTDOOR UNIT WIRING DIAGRAMMODELS WIRING DIAGRAM MUH-GA25VB- E1 MUH-GA35VB- E1Unit mm REFRIGERANT SYSTEM DIAGRAMMUH-GA20VB- E1 OUTDOOR UNIT MUH-GA25VB- E1 MUH-GA35VB- E1ADDITIONAL REFRIGERANT CHARGER410A g PERFORMANCE CURVESMAX. REFRIGERANT PIPING LENGTH MAX. HEIGHT DIFFERENCEWet-and dry-bulbthermometers INDOOR UNIT8-1.CAPACITYAND THE INPUT CURVES OUTDOOR UNITMUH-GA35VB- E1 MUH-GA20VB- E1MUH-GA25VB- E1 Ambient temperature˚C HEAT operationAmbient temperature˚C Ambient temperature˚CPERFORMANCE DATA COOL operation MSC-GA20VB- E1MUH-GA20VB- E1 CAPACITY 2.3kW SHF 0.74 INPUT 715W MSC-GA20VB- E1MUH-GA20VB- E1 MUH-GA25VB- E1 MSC-GA25VB- E1CAPACITY 2.65kW SHF MSC-GA25VB- E1MUH-GA25VB- E1 MUH-GA35VB- E1 MSC-GA35VB- E1CAPACITY 3.5kW SHF 0.66 INPUT 1090W MSC-GA35VB- E1MUH-GA35VB- E1 MUH-GA25VB- E1 MSC-GA20VB- E1MUH-GA20VB- E1 MSC-GA25VB- E19-2.CHANGE IN DEFROST SETTING SERVICE FUNCTIONS10 TROUBLESHOOTING 9-1.COMPULSORY DEFROSTING MODE FOR SERVICEMUH-GA20VB- E1 MUH-GA25VB- E1 MUH-GA35VB- E1 10-2.Instruction of troubleshootingMUH-GA25VB- E1 A Check of outdoor unit10-4.Troubleshooting flow MUH-GA20VB- E1C Check of R.V. coil B Check of outdoor unitC Check of R.V. coil 0.5-sec.ON, 0.5-sec.OFF D How to check mis-wiringand serial signal errorSerial signal error is indicated E Check of outdoor thermistor MUH-GA20VB- E1 MUH-GA25VB- E1 MUH-GA35VB- E1 Outdoor deicer P.C. board10-5.Test point diagram and voltage MUH-GA20VB- E1 OUTDOOR UNIT 11 DISASSEMBLY INSTRUCTIONSOPERATING PROCEDURE PHOTOSPhoto OPERATING PROCEDUREPHOTOS 2. Removing the deicer P.C. boardPhoto OPERATING PROCEDUREPHOTOS 4. Removing the compressorMUH-GA35VB- E1 12 PARTS LISTMUH-GA20VB- E1 MUH-GA25VB- E1 12-1.OUTDOOR UNIT STRUCTURAL PARTSMUH-GA35VB- E1 SymbolMUH-GA20VB- E1 MUH-GA25VB- E1Page Page Made in Japan Specifications subject to change without noticeNew publication, effective Feb Distributed in Feb. 2005. No.OB387