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FLOOR AND CEILING TYPE AIR CONDITIONERS
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 indoor units
• As for outdoor units MUCF-GA35VB -
the service manual OB383.
(WH)
E1
(WH)
E1
(WH)
E1
CONTENTS
Indication of
model name
1. TECHNICAL CHANGES ····································2
MCF-GA35VB -
E1
2. PART NAMES AND FUNCTIONS······················2
MCF-GA50VB -
E1
3. SPECIFICATION·················································4
MCF-GA60VB -
E1
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. OPTIONAL PARTS···········································19
,MUCF-GA50VB -
and MUCF-GA60VB -
E1
E1
No. OB382
, refer to
E1
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Related Manuals for Mitsubishi Electric MCF-GA35VB-E1
Summary of Contents for Mitsubishi Electric MCF-GA35VB-E1
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Page 1: Table Of Contents
FLOOR AND CEILING TYPE AIR CONDITIONERS No. OB382 SERVICE MANUAL Wireless type Models MCF-GA35VB - (WH) MCF-GA50VB - (WH) MCF-GA60VB - (WH) (When installed on the floor) CONTENTS Indication of model name 1. TECHNICAL CHANGES ····································2 MCF-GA35VB - 2. PART NAMES AND FUNCTIONS······················2 MCF-GA50VB - 3. -
Page 2: Technical Changes
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. PART NAMES AND FUNCTIONS MCF-GA35VB - MCF-GA50VB - MCF-GA60VB - INDOOR UNIT ACCESSORIES... - Page 3 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 STOP OFF-TIMER button I FEEL COOL...
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Page 4: Specification
SPECIFICATION Indoor model MCF-GA35VB - MCF-GA60VB - MCF-GA50VB - Cooling Cooling Cooling Function 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 840/ 744 W / 642 W Capacity K /h... -
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 NC-60... -
Page 6: Outlines And Dimensions
OUTLINES AND DIMENSIONS MCF-GA35VB - MCF-GA60VB - Unit: mm MCF-GA50VB - INDOOR UNIT (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 Unit : mm MCF-GA35VB - MCF-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 Flared connection exchanger exchanger Indoor coil Indoor coil thermistor thermistor... -
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 3-seconds Set time : 1 minute... - 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 Start 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 pressed flashing remote operate. or when the controller. on and off. EMERGENCY OPERATION switch is...
- Page 12 9-4. Trouble criterion of main parts MCF-GA35VB - MCF-GA50VB - MCF-GA60VB - Part name Check method and criterion Figure 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.
- Page 13 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 – –...
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Page 15: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <"Terminal with locking mechanism" Detaching points> The terminal which has the locking mechanism can be detached as shown below. There are two types ( Refer to (1) and (2)) of the terminal with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. - 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 MCF-GA35VB - (WH) MCF-GA50VB - (WH) MCF-GA60VB - (WH) 11-1. INDOOR UNIT STRUCTURAL PARTS Part number that is circled is not shown in the illustration. Q'ty/unit Symbol MCF-GA35VB MCF-GA50VB MCF-GA60VB in Wiring Part No. Part name Remarks Diagram (WH) (WH) (WH) - Page 18 MCF-GA35VB - (WH) MCF-GA50VB - (WH) MCF-GA60VB - (WH) 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 MCF-GA35VB MCF-GA50VB MCF-GA60VB in Wiring Part No.
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Page 19: Optional Parts
OPTIONAL PARTS 12-1. AIR CLEANING FILTER If the air cleaning filter is clogged, it may lower the unit’s capacity or cause condensation at the air outlet. The air cleaning filter is disposable. The standard usable term is about 4 months. However, if the color of the filter turns to dark brown, replace soon. - Page 20 HEAD OFFICE: MITSUBISHI DENKI BLDG.,2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO100-8310, JAPAN C C Copyright 2004 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD New publication, effective Dec. 2004 Distributed in Dec. 2004. No.OB382 6 Specifications subject to change without notice. Made in Japan...