Mitsubishi Electric MCFH-GA35VB Service Manual
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- Operating instructions manual (121 pages) ,
- Service manual (24 pages)
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FLOOR AND CEILING TYPE AIR CONDITIONERS
SERVICE MANUAL
Wireless type
Models
MCFH-GA35VB-
MCFH-GA50VB-
MCFH-GA60VB-
NOTE:
• This manual describes technical data of indoor units
• As for outdoor units MUCFH-GA35VB/GA50VB/GA60VB-
• As for outdoor units MXZ-A14/A18/A26/A32WV-
EDITION-A.
All manuals and user guides at all-guides.com
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CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
Indication of
4. NOISE CRITERIA CURVES ·······························5
model name
MCFH-GA35VB-
5. OUTLINES AND DIMENSIONS ·························6
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6. WIRING DIAGRAM ············································7
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7. REFRIGERANT SYSTEM DIAGRAM ················8
8. SERVICE FUNCTIONS ······································9
9. TROUBLESHOOTING······································11
10. DISASSEMBLY INSTRUCTIONS·····················19
11. PARTS LIST······················································21
12. OPTIONAL PARTS···········································23
, refer to the service manual OB381.
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, refer to the service manual OB319 REVISED
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No. OB380
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Table of Contents
Related Manuals for Mitsubishi Electric MCFH-GA35VB
Summary of Contents for Mitsubishi Electric MCFH-GA35VB
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Page 1: Table Of Contents
All manuals and user guides at all-guides.com FLOOR AND CEILING TYPE AIR CONDITIONERS No. OB380 SERVICE MANUAL Wireless type Models MCFH-GA35VB- (WH) MCFH-GA50VB- (WH) MCFH-GA60VB- (WH) CONTENTS (When installed on the floor) 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················2 3. -
Page 2: (When Installed On The Floor)
1. Model name has been changed. MCFH-A18WV- MCFH-GA50VB- 1. Model name has been changed. MCFH-A24WV- MCFH-GA60VB- 1. Model name has been changed. PART NAMES AND FUNCTIONS MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - INDOOR UNIT ACCESSORIES (When installed on the floor) Item Q'ty... - Page 3 All manuals and user guides at all-guides.com MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - REMOTE CONTROLLER Signal transmitting section Operation display section OPERATE /STOP (ON /OFF)button ON/OFF WARM COOL TEMPERATURE buttons Open the front lid. Indication of remote controller model is on back.
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Page 4: Specification
All manuals and user guides at all-guides.com SPECIFICATION MCFH-GA35VB- MCFH-GA50VB- MCFH-GA60VB- Indoor model Cooling Heating Cooling Heating Cooling Heating Function Single phase Power supply 230V, 50Hz Capacity Air flow(High/Med.W/LowW) 780/636W/492W 840/696W/570W 840/744W/642W K /h Power outlet Running current 0.30 0.36 0.36... -
Page 5: Noise Criteria Curves
All manuals and user guides at all-guides.com NOISE CRITERIA CURVES MCFH-GA35VB - MCFH-GA50VB - SPL(dB LINE SPL(dB LINE FAN SPEED FUNCTION FAN SPEED FUNCTION COOLING COOLING High High HEATING HEATING Test conditions, Test conditions, Cooling : DB 27: WB 19:\... -
Page 6: Outlines And Dimensions
All manuals and user guides at all-guides.com OUTLINES AND DIMENSIONS MCFH-GA35VB - Unit: mm MCFH-GA50VB - MCFH-GA60VB - INDOOR UNIT 80.8 112.8 (When installed on the floor) 50cm or more 50cm or more (When installed on the ceiling) 50cm or more... -
Page 7: Wiring Diagram
All manuals and user guides at all-guides.com WIRING DIAGRAM MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - INDOOR UNIT MODELS WIRING DIAGRAM GRN/YLW POWER SUPPLY RT12 ~/N 230V HIC1 50Hz LDCOM CN201 TAB12 LDC11 CIRCUIT BREAKER LDC12 LDFH X144 LDFM SR143 TO OUTDOOR... -
Page 8: Refrigerant System Diagram
All manuals and user guides at all-guides.com REFRIGERANT SYSTEM DIAGRAM Unit : mm MCFH-GA35VB- MCFH-GA50VB- INDOOR UNIT INDOOR UNIT Refrigerant pipe [12.7 Refrigerant pipe [12.7 (with heat insulator) (with heat insulator) Indoor Indoor heat heat Distributor Distributor Flared connection exchanger... -
Page 9: Service Functions
All manuals and user guides at all-guides.com SERVICE FUNCTIONS MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. The time will be shortened as follows. (Refer to 9-6.) - Page 10 All manuals and user guides at all-guides.com 8-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. The “AUTO RESTART FUNCTION” sets to work the moment power has restored after power failure.Then, the unit will restart automatically.
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Page 11: Troubleshooting
All manuals and user guides at all-guides.com TROUBLESHOOTING MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - 9-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: (1) Check the power supply voltage. (2) Check the indoor/outdoor connecting wire for mis-wiring. 2. Take care the following during service. - Page 12 All manuals and user guides at all-guides.com 9-2. Instruction of troubleshooting Start Indoor unit Indoor unit Indoor unit operates. OPERATION INDICATOR operates. doesn't receive Outdoor unit lamp on the indoor unit is Outdoor unit the signal from doesn't operate flashing on and off. doesn't remote controller.
- Page 13 All manuals and user guides at all-guides.com 9-3. Troubleshooting check table OPERATION INDICATOR lamp Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table Abnormal Indication Symptom Detect method Check point point 0.5-second ON Check wiring (visual check and conductiv- Mis-wiring ity check).
- Page 14 All manuals and user guides at all-guides.com 9-4. Trouble criterion of main parts MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - Part name Check method and criterion Figure Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor (RT11)
- Page 15 All manuals and user guides at all-guides.com 9-5. Troubleshooting flow Indoor fan does not operate. Check of indoor fan motor Turn OFF power supply. Check connector (Fan motor) visually. Is soldered point of the connector Are lead wires connected? correctly soldered? Reconnect the lead wires.
- Page 16 All manuals and user guides at all-guides.com The unit does not operate with the remote controller. Also, the OPERATION INDICATOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. Check of indoor electronic control P.C. board Replace the fuse. Is fuse(F11)blown? Check both “parts side”and “pattern Trouble of the indoor electronic...
- Page 17 All manuals and user guides at all-guides.com When OPERATION INDICATOR lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. How to check mis-wiring and serial signal error (when outdoor unit does not work) Start Is this mis-wiring, poor contact, Make them sure.
- Page 18 All manuals and user guides at all-guides.com 9-6. Test point diagram and voltage MCFH-GA35VB - MCFH-GA50VB - MCFH-GA60VB - Indoor electronic control P.C. board Fan motor power supply 230V AC Very Med. High Fuse (F11) 250V AC 3.15A Varistor (NR11)
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Page 19: Disassembly Instructions
1Hold the sleeve, and 2Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 10-1.MCFH-GA35VB- MCFH-GA50VB- MCFH-GA60VB- INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the electronic control P. C . board. Photo 1 (1) Pull out the upper part of the grille. (See Photo 1.) (2) Remove the screws of the grille. - Page 20 All manuals and user guides at all-guides.com OPERATING PROCEDURE PHOTOS Photo 4 2. Removing the indoor fan motor (1) Remove the grille. (Refer to 1(1) (2).) (2) Remove the fan casing.(upper) Motor band Fan casing (3) Disconnect the connector of the indoor fan motor. (upper) (4) Disconnect the ground wire of the fan motor.
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Page 21: Parts List
All manuals and user guides at all-guides.com PARTS LIST MCFH-GA35VB - (WH) MCFH-GA50VB - (WH) MCFH-GA60VB - (WH) 11-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol MCFH-GA35VB MCFH-GA50VB MCFH-GA60VB in Wiring Part No. - Page 22 All manuals and user guides at all-guides.com MCFH-GA35VB - (WH) MCFH-GA50VB - (WH) MCFH-GA60VB - (WH) 11-2. INDOOR UNIT 11-3. ACCESSORY AND ELECTRICAL PARTS REMOTE CONTROLLER 11-2. INDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration.
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Page 23: Optional Parts
(white bellows type) together. from the air filter. Part No. Models MCFH-GA35VB - MCFH-GA50VB - MAC - 1200 FT MCFH-GA60VB - 12-2. DEODORIZING FILTER Clean the filter every two weeks . When it becomes too dirt , clean it more often . - Page 24 All manuals and user guides at all-guides.com HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD New publication, effective Jan. 2005 Specifications subject to change without notice. Distributed in Jan. 2005. No.OB380 6...