Manuals / Pioneer / Household Appliance / Air Conditioner

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

Models: MUH-GA20VB MUH-GA25VB MUH-GA35VB

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

Contents

No. OB387 CONTENTSSPLIT-TYPE,HEAT PUMP AIR CONDITIONERS Wireless type ModelsMUH-A09YV- E1 MUH-GA25VB- E1 TECHNICAL CHANGESMUH-A07YV- E1 MUH-GA20VB- E1 MUH-A12YV- E1 MUH-GA35VB- E1Refrigerant Can R22 tools be used? liquidR410A tools Description4.Air purge 3.Refrigeration oil5.Additional charge PART NAMES AND FUNCTIONS 3 SPECIFICATIONACCESSORIES OUTDOOR UNITMUH-GA25VB NOISE CRITERIA CURVESMUH-GA20VB MUH-GA35VBMUH-GA25VB- E1 OUTLINES AND DIMENSIONSMUH-GA20VB- E1 OUTDOOR UNIT MUH-GA35VB- E1MUH-GA25VB- E1 MUH-GA35VB- E1 WIRING DIAGRAMMODELS WIRING DIAGRAM MUH-GA20VB- E1 OUTDOOR UNITMUH-GA25VB- E1 MUH-GA35VB- E1 REFRIGERANT SYSTEM DIAGRAMMUH-GA20VB- E1 OUTDOOR UNIT Unit mmMAX. HEIGHT DIFFERENCE PERFORMANCE CURVESMAX. REFRIGERANT PIPING LENGTH ADDITIONAL REFRIGERANT CHARGER410A gOUTDOOR UNIT INDOOR UNIT8-1.CAPACITYAND THE INPUT CURVES Wet-and dry-bulbthermometersMUH-GA25VB- E1 MUH-GA20VB- E1MUH-GA35VB- E1 Ambient temperature˚C HEAT operationAmbient temperature˚C Ambient temperature˚CMUH-GA20VB- E1 MSC-GA20VB- E1PERFORMANCE DATA COOL operation MUH-GA20VB- E1 MSC-GA20VB- E1CAPACITY 2.3kW SHF 0.74 INPUT 715W MSC-GA25VB- E1 MUH-GA25VB- E1MUH-GA25VB- E1 MSC-GA25VB- E1CAPACITY 2.65kW SHF MSC-GA35VB- E1 MUH-GA35VB- E1MUH-GA35VB- E1 MSC-GA35VB- E1CAPACITY 3.5kW SHF 0.66 INPUT 1090W MSC-GA25VB- E1 MSC-GA20VB- E1MUH-GA20VB- E1 MUH-GA25VB- E19-1.COMPULSORY DEFROSTING MODE FOR SERVICE SERVICE FUNCTIONS10 TROUBLESHOOTING 9-2.CHANGE IN DEFROST SETTING10-2.Instruction of troubleshooting MUH-GA20VB- E1 MUH-GA25VB- E1 MUH-GA35VB- E1MUH-GA20VB- E1 A Check of outdoor unit10-4.Troubleshooting flow MUH-GA25VB- E1C Check of R.V. coil B Check of outdoor unitC Check of R.V. coil Serial signal error is indicated D How to check mis-wiringand serial signal error0.5-sec.ON, 0.5-sec.OFF E Check of outdoor thermistor 10-5.Test point diagram and voltage Outdoor deicer P.C. boardMUH-GA20VB- E1 MUH-GA25VB- E1 MUH-GA35VB- E1 PHOTOS 11 DISASSEMBLY INSTRUCTIONSOPERATING PROCEDURE MUH-GA20VB- E1 OUTDOOR UNIT2. Removing the deicer P.C. board OPERATING PROCEDUREPHOTOS Photo4. Removing the compressor OPERATING PROCEDUREPHOTOS Photo12-1.OUTDOOR UNIT STRUCTURAL PARTS 12 PARTS LISTMUH-GA20VB- E1 MUH-GA25VB- E1 MUH-GA35VB- E1MUH-GA25VB- E1 SymbolMUH-GA20VB- E1 MUH-GA35VB- E1Page Page Distributed in Feb. 2005. No.OB387 Specifications subject to change without noticeNew publication, effective Feb Made in Japan