Mitsubishi Electric MCF-GA35VB Service Manual
Floor and ceiling type air conditioners
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- Service manual (20 pages) ,
- Operating instructions manual (112 pages)
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FLOOR AND CEILING TYPE AIR CONDITIONERS
INDOOR UNIT
SERVICE MANUAL
Wireless type
Models
MCF-GA35VB -
MCF-GA50VB -
MCF-GA60VB -
(When installed on the floor)
(When installed on the ceiling)
NOTE:
This service manual describes technical data of the indoor units.
RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS PARTS LIST (RoHS compliant).
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CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················2
3. SPECIFICATION·················································4
4. NOISE CRITERIA CURVES ·······························5
5. OUTLINES AND DIMENSIONS ·························6
6. WIRING DIAGRAM ············································6
7. REFRIGERANT SYSTEM DIAGRAM ················7
8. SERVICE FUNCTIONS ······································8
9. TROUBLESHOOTING······································10
10. DISASSEMBLY INSTRUCTIONS·····················15
11. PARTS LIST······················································17
12. RoHS PARTS LIST···········································19
13. OPTIONAL PARTS···········································21
RoHS PARTS LIST has been added.
Please void OB382.
No. OB382
REVISED EDITION-A
Outdoor unit service manual
MUCF-GA•VB Series (OB383)
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Table of Contents
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Summary of Contents for Mitsubishi Electric MCF-GA35VB
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Page 1: Table Of Contents
FLOOR AND CEILING TYPE AIR CONDITIONERS Please void OB382. INDOOR UNIT No. OB382 SERVICE MANUAL REVISED EDITION-A Wireless type Models MCF-GA35VB - MCF-GA50VB - MCF-GA60VB - Outdoor unit service manual MUCF-GA•VB Series (OB383) (When installed on the floor) CONTENTS 1. TECHNICAL CHANGES ····································2 2. -
Page 2: Revision A
Revision A : • RoHS PARTS LIST has been added. TECHNICAL CHANGES MCF-A12WV - MCF-GA35VB - 1. Model name has been changed. MCF-A18WV - MCF-GA50VB - 1. Model name has been changed. MCF-A24WV - MCF-GA60VB - 1. Model name has been changed. -
Page 3: Remote Controller
MCF-GA35VB MCF-GA50VB MCF-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. CLOCK ON/OFF WARM COOL FAN SPEED CONTROL button... -
Page 4: Specification
SPECIFICATION Indoor model MCF-GA35VB MCF-GA50VB MCF-GA60VB Cooling Function Cooling Cooling Single phase Single phase Single phase Power supply 230V, 50Hz 230V, 50Hz 230V, 50Hz Air flow (High/Med. W /Low W ) 678 /582 W /474 W 780 / 636 W / 492 W... -
Page 5: Noise Criteria Curves
NOISE CRITERIA CURVES NOISE CRITERIA CURVES MCF-GA35VB MCF-GA50VB FAN SPEED SPL(dB LINE SPL(dB LINE FAN SPEED High High Test conditions, Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: NC-70 NC-70... -
Page 6: Outlines And Dimensions
OUTLINES AND DIMENSIONS MCF-GA35VB MCF-GA60VB Unit: mm MCF-GA50VB (When installed on the floor) 80.8 112.8 500mm or more 500mm or more (When installed on the ceiling) 500mm or more 1100 Gas line [ 12.7 (MCF-GA35/GA50VB) Liquid line [ 15.88 (MCF-GA60VB) [ 6.35... -
Page 7: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MCF-GA50VB Unit : mm MCF-GA35VB Refrigerant pipe [12.7 Refrigerant pipe [12.7 (with heat insulator) (with heat insulator) Indoor Indoor heat heat Distributor Distributor Flared connection Flared connection exchanger exchanger Indoor coil Indoor coil thermistor thermistor RT12 RT12... -
Page 8: Service Functions
SERVICE FUNCTIONS MCF-GA35VB MCF-GA50VB MCF-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..) 3-minutes time delay : 3-minutes... - Page 9 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 10: Troubleshooting
TROUBLESHOOTING MCF-GA35VB MCF-GA50VB MCF-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 servicing. (1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and then after con- firming the horizontal vane is closed, turn OFF the breaker and / or disconnect the power plug. - Page 11 9-2. Instruction of troubleshooting w1."Test Run operation" means the operation within 30 minutes after Start EMERGENCY OPERATION switch is pressed. Indoor unit OPERATION Indoor unit When the doesn't INDICATOR operates. remote lamp on the receive the Outdoor unit controller is indoor unit is signal from doesn't...
- Page 12 9-4. Trouble criterion of main parts MCF-GA35VB MCF-GA50VB MCF-GA60VB Figure Part name Check method and criterion Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor (RT11) Normal Abnormal Indoor coil 8kΩ ~ 20kΩ Open or short-circuit thermistor (RT12) Measure the resistance between the terminals with a tester.
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Page 13: Check Of Remote Controller And Receiver P.c. Board
Indoor unit operates by pressing the EMERGENCY OPERATION switch, but does not operate with the remote con- troller. Check of remote controller and receiver P.C. board w Check if the remote controller is exclusive for this air conditioner. Switch on the remote controller Is LCD display on remote controller Replace the batteries.(Refer to 9-1.) visible? - Page 14 9-6. Test point diagram and voltage MCF-GA35VB MCF-GA50VB MCF-GA60VB Indoor electronic control P.C. board Fan motor power supply 230V AC Med. High Fuse (F11) 250V AC 3.15A Varistor (NR11) Power supply input 230V AC 5V DC – – 12V DC Release of “AUTO RESTART...
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Page 15: Disassembly Instructions
2Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector MCF-GA35VB MCF-GA50VB MCF-GA60VB 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 16 OPERATING PROCEDURE PHOTOS 3. Removing the indoor heat exchanger. Photo 5 (1) Remove the grille. (Refer to 1(1) (2).) (2) Remove the screws on both side and in front of the front panel. (See Photo 5.) (3) Remove the screws of the nozzle assembly. (See Photo 6.) (4) Remove the electronic box.
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Page 17: Parts List
PARTS LIST (non-RoHS compliant) MCF-GA35VB MCF-GA50VB MCF-GA60VB 11-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remarks MCF-GA35VB MCF-GA50VB MCF-GA60VB Diagram E02 227 303 VANE MOTOR... -
Page 18: Electrical Parts
PARTS LIST (non-RoHS compliant) MCF-GA35VB MCF-GA50VB MCF-GA60VB 11-3. ACCESSORY AND 11-2. INDOOR UNIT REMOTE CONTROLLER ELECTRICAL PARTS 11-2. INDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name... -
Page 19: Rohs Parts List
RoHS PARTS LIST (RoHS compliant) MCF-GA35VB MCF-GA50VB MCF-GA60VB 12-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol in Wiring Part No. Part name Remarks MCF-GA35VB MCF-GA50VB MCF-GA60VB Diagram E12 227 303... - Page 20 RoHS PARTS LIST (RoHS compliant) MCF-GA35VB MCF-GA50VB MCF-GA60VB 12-3. ACCESSORY AND 12-2. INDOOR UNIT REMOTE CONTROLLER ELECTRICAL PARTS 12-2. INDOOR UNIT ELECTRICAL PARTS Part numbers that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Part No.
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Page 21: Optional Parts
(white bellows type) together. from the air filter. Models Part No. MCF-GA35VB MAC - 1200 FT MCF-GA50VB MCF-GA60VB 13-2. DEODORIZING FILTER Clean the filter every two weeks. When it becomes too dirt, clean it more often. Replace the filter with a new one when its color can not be restored even after washing or when the filter becomes dark. - Page 24 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN C C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Distributed in May 2006. No.OB382 REVISED EDITION-A 6 New publication, effective May 2006 Distributed in Dec. 2004. No.OB382 6 Specifications subject to change without notice.