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SERVICE MANUAL

Wireless type
Models

MCFH-GA35VB-

(WH)

MCFH-GA50VB-

(WH)

MCFH-GA60VB-

(WH)

No. OB380

(When installed on the ceiling)

(When installed on the floor)

FLOOR AND CEILING TYPE AIR CONDITIONERS

NOTE:
• This manual describes technical data of indoor units
• As for outdoor units MUCFH-GA35VB/GA50VB/GA60VB-

, refer to the service manual OB381.

• As for outdoor units MXZ-A14/A18/A26/A32WV-

, refer to the service manual OB319 REVISED

EDITION-A.

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 ············································7

7. REFRIGERANT SYSTEM DIAGRAM ················8

8. SERVICE FUNCTIONS ······································9

9. TROUBLESHOOTING······································11

10. DISASSEMBLY INSTRUCTIONS·····················19

11. PARTS LIST······················································21

12. OPTIONAL PARTS···········································23

Indication of
model name
MCFH-GA35VB-
MCFH-GA50VB-
MCFH-GA60VB-

OB380--1.qxp 04.12.23 17:33 Page 1

Содержание MCFH-GA35VB

Страница 1: ...VB refer to the service manual OB381 As for outdoor units MXZ A14 A18 A26 A32WV refer to the service manual OB319 REVISED EDITION A E1 E1 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 7 7 REFRIGERANT SYSTEM DIAGRAM 8 8 SERVICE FUNCTIONS 9 9 TROUBLESHOOTING 11 10 DISASSEMBLY INSTRUCTIONS 19 11 PAR...

Страница 2: ...zontal vane Vertical vanes Emergency operation switch When installed on the ceiling ACCESSORIES Item Installation plate Unit fixing screw 5 o 12mm Wireless remote controller Remote controller mounting hardware Fixing screw for 3 5 o 16mm Black Battery AAA for remote controller Drain hose Drain pipe cover Knockout cover Screw for 4 o 10mm 2 2 1 1 2 2 1 1 1 2 Q ty Remote controller MCFH A12WV MCFH G...

Страница 3: ...OFF TOO COOL PM AM TOO WARM Open the front lid Signal transmitting section Operation display section OPERATE STOP ON OFF button TEMPERATURE buttons OPERATION SELECT button FAN SPEED CONTROL button OFF TIMER button ON TIMER button RESET button ECONO COOL button VANE CONTROL button CLOCK SET button HR button MIN button TIME SET button Indication of remote controller model is on back ...

Страница 4: ...636W 492W 10 0 30 66 96 0 30 RB4V25 AC WHT BLK 182 2 BLK YLW 68 9 YLW BLU 47 5 BLU BRN 31 5 BRN RED 22 9 25 5 46 41W 36W 1 240 1 060 845 3 10 10 KM04M Cooling Heating Single phase 230V 50Hz 840 696W 570W 10 0 36 80 97 0 36 RB4V36 AC WHT BLK 82 9 BLK YLW 65 6 YLW BLU 36 0 BLU BRN 27 0 BRN RED 13 7 1100 650 180 25 5 48 44W 39W 1 320 1 145 960 3 10 10 KM04M Cooling Heating 840 744W 642W 10 0 36 80 97...

Страница 5: ...C 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz Test conditions Cooling DB 27 WB 19 Heating DB 20 WB 15 APPROXIMATE THRESHOLD OF HEARING FOR CONTINUOUS NOISE COOLING HEATING FUNCTION High FAN SPEED 46 SPL dB A LINE MCFH GA50VB E1 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE B...

Страница 6: ...or more 50cm or more 50cm or more 50cm or more 100cm or more 650 616 5 80 8 906 112 8 114 16 1100 93 77 113 143 180 170 42 5 12 7 MCFH GA35 GA50VB 15 88 MCFH GA60VB Gas line 6 35 Liquid line Wireless remote controller 162 19 58 INDOOR UNIT MCFH GA35VB MCFH GA50VB MCFH GA60VB E1 E1 E1 Unit mm ...

Страница 7: ...N 230V BRN SR141 LDFVL TB2 PE CIRCUIT BREAKER HIC1 F11 NR11 MODELS WIRING DIAGRAM SYMBOL SR141 SR143 TB1 TB2 X144 SYMBOL MV NR11 RT11 RT12 NAME NAME NAME INDOOR FAN CAPACITOR FUSE 3 15A DC DC CONVERTER INDOOR FAN MOTOR INNER FUSE VANE MOTOR VARISTOR ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR SOLID STATE RELAY TERMINAL BLOCK RELAY 1 About the outdoor side electric wiring refer to the outdoo...

Страница 8: ...oil thermistor RT12 Indoor heat exchanger Distributor Flared connection Room temperature thermistor RT11 Indoor coil thermistor RT12 Flared connection Refrigerant pipe 12 7 with heat insulator Refrigerant pipe 6 35 with heat insulator INDOOR UNIT MCFH GA35VB E1 Indoor heat exchanger Distributor Flared connection Room temperature thermistor RT11 Indoor coil thermistor RT12 Flared connection Refrige...

Страница 9: ...operation Same as at left Solder J1 3 units operation Same as at left Same as at left Solder J2 4 units operation Same as at left Same as at left Same as at left Solder both J1 and J2 The P C board has the print J1 and J2 Solder J1 and J2 according to the number of indoor unit as shown in Table 1 After modification press the RESET button How to set the remote controller exclusively for particular ...

Страница 10: ...to the same supply system if they are operated before power failure the starting current of all the compressors may flow simultaneously at restart Therefore the special counter measures are required to prevent the main voltage drop or the rush of the starting current by adding to the system that allows the units to start one by one When the indoor unit is controlled with the remote controller the ...

Страница 11: ...te the remote controller normally 1 Remove the front lid and insert batteries Then reattach the front lid 2 Press the RESET button with tip end of ball point pen or the like and then use the remote controller NOTE If the RESET button is not pressed the remote controller may not operate correctly MCFH GA35VB MCFH GA50VB MCFH GA60VB E1 E1 E1 RESET button Insert the negative pole of the batteries fir...

Страница 12: ...m temperature thermistor and indoor coil thermistor Refer to 9 6 Test point diagram and voltage 4 time flash Cause Indoor unit Trouble of indoor electric P C board Refer to 9 5 D Check of indoor electric control P C board Refer to 9 5 E How to check mis wiring and serial signal error When outdoor unit doesn t work 1 Check indoor outdoor connecting wire 2 Refer to 9 5 C Check of indoor electronic c...

Страница 13: ... OFF Outdoor unit does not run When the compressor operation is continuously three times interrupted by over current protection within 1 minute after start up it stops operation Check the inverter output Check the compressor Refer to service manual OB319 REVISED EDITION A 6 MCFH GA60VB MXZ type Outdoor control P C board 7 time flash 2 5 second OFF Outdoor unit does not run When it cannot properly ...

Страница 14: ...erion Measure the resistance with a tester Part temperature 10 C 30 C Figure Normal 8kΩ 20kΩ Abnormal Open or short circuit Vane motor MV Measure the resistance between the terminals with a tester Part temperature10 C 30 C Normal Abnormal Open or short circuit 328 356Ω MCFH GA35VB MCFH GA50VB MCFH GA60VB E1 E1 E1 BLK RED ORN YLW BLU BRN WHT GRN YLW FUSE YLW GRN ORN BRN RED ROTOR Normal MCFH GA50VB...

Страница 15: ... the EMERGENCY OPERATION switch but does not operate with the remote con troller Replace the batteries Refer to 9 4 Turn on a radio to AM and press switch on remote controller Is noise heard from radio Are there any fluorescent lights of inverter or rapid start type within the range of 1m Is the voltage approx 4V DC Replace the indoor electronic control P C board Replace the receiver P C board Rep...

Страница 16: ...use Trouble of the indoor electronic control P C board Replace the varistor Yes Check both parts side and pattern side of indoor electronic control P C board visually No Is varistor NR11 burnt Yes Is fuse F11 blown Check of indoor electronic control P C board D When OPERATION INDICATOR lamp flashes 4 time Indoor unit does not operate Turn off the power supply Replace the indoor electronic control ...

Страница 17: ...e stylus is between 0 20V Turn OFF the power supply indoor unit Connect ON indoor and outdoor connecting wire Is this mis wiring poor contact or disconnection of wire Make them sure Replace the indoor electronic control P C board Turn ON the power supply outdoor unit Is there 230V AC between outdoor terminal block L N TB1 No Check the outdoor power supply power supply cord and connection Yes Turn ...

Страница 18: ...c control P C board Fan motor power supply 230V AC 7 5 6 4 3 2 1 8 Med High Fuse F11 250V AC 3 15A Power supply input 230V AC 12V DC 5V DC Time short point JPG and JPS Refer to 8 1 Indoor coil thermistor RT12 Room temperature thermistor RT11 Very Low Low Solder jumper wire to the JR07 on the indoor electronic control P C board Refer to 8 3 Room temperature thermistor RT11 Varistor NR11 Receiver P ...

Страница 19: ...GA50VB MCFH GA60VB INDOOR UNIT E1 E1 E1 Electronic control P C board 1 Slide the sleeve and check if there is a locking lever or not 2 The terminal with this connector has the locking mechanism 1Slide the sleeve 2Pull the terminal while pushing the locking lever 1Hold the sleeve and pull out the terminal slowly The terminal which has the locking mechanism can be detached as shown below There are t...

Страница 20: ...he drain pan and remove the screws See Photo 7 9 Remove the screws under the drain pan See Photo 8 10 Remove the drain pan 11 Remove the indoor heat exchanger Photo 5 Photo 6 Photo 7 Photo 8 Screws Insulation and screws screws Screws 2 Removing the indoor fan motor 1 Remove the grille Refer to 1 1 2 2 Remove the fan casing upper 3 Disconnect the connector of the indoor fan motor 4 Disconnect the g...

Страница 21: ... CATCH WH 12 7 15 88 6 35 3PCS SET 1 1 2 1 1 1 2 2 1 1 1 1 1 1 1 3 1 1 2 1 1 1 2 2 1 1 1 1 1 1 1 3 1 1 2 1 1 1 2 2 1 1 1 1 1 1 1 3 MV MCFH GA35VB E02 227 303 E02 179 971 E02 179 100 E02 179 010 E02 179 000 E02 215 700 E02 179 237 E02 179 238 E02 179 667 E02 138 666 E02 179 972 E02 138 667 E02 179 231 E02 227 235 E02 823 620 E02 824 620 E02 227 040 E02 179 142 No Part No Remarks Part name Symbol in...

Страница 22: ...1 F11 REMOTE CONTROLLER REMOTE CONTROLLER HOLDER SW THERMO P C BOARD E1 WH Q ty unit MCFH GA35VB E02 179 500 E02 179 505 E02 228 300 E02 229 300 E02 684 300 E02 826 375 E02 823 375 E02 227 468 E02 327 307 E02 826 452 E02 827 452 E02 828 452 E02 215 328 E02 820 385 E02 127 382 No Part No Remarks Part name Symbol in Wiring Diagram E1 WH MCFH GA50VB E1 WH MCFH GA60VB 2PCS SET RB4V25 RB4V36 RB4V36 3P ...

Страница 23: ...acity 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 Models MCFH GA35VB MCFH GA50VB MCFH GA60VB E1 E1 E1 Part No MAC 1700 DF Remove the air filter and the deodorizing filter together Separate the deodorizing filter gray sponge type from the air filter Remove...

Страница 24: ...Specifications subject to change without notice C C Copyright 2005 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in Jan 2005 No OB380 6 Made in Japan HEAD OFFICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO100 8310 JAPAN ...

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