Mitsubishi Electric MSZ-GA35VA Service Manual
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Mitsubishi Electric MSZ-GA35VA Service Manual

Split-type, heat pump air conditioners
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

Wireless type
Models
MSZ-GA22VA -
MSZ-GA25VA -
MSZ-GA35VA -
Indication of model name
MSZ-GA22VA -
MSZ-GA25VA -
MSZ-GA35VA -
NOTE:
This service manual describes technical data of the indoor units.
•As for outdoor units MUZ-GA25VA-
and MUZ-GA35VAH-
•As for outdoor units MXZ-3A54VA-
refer to service manual OB377.
(WH)
E1
(WH)
E1
(WH)
E1
E1
E1
E1
, MUZ-GA35VA-
E1
, refer to service manual OB379.
E1
, MXZ-4A71VA-
E1
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································5
4. NOISE CRITERIA CURVES ·······························6
5. OUTLINES AND DIMENSIONS ·························7
6. WIRING DIAGRAM ············································8
7. REFRIGERANT SYSTEM DIAGRAM ················8
8. SERVICE FUNCTIONS ······································9
9. TROUBLESHOOTING······································10
10. DISASSEMBLY INSTRUCTIONS·····················24
11. PARTS LIST······················································27
12. OPTIONAL PARTS···········································30
, MUZ-GA25VAH-
E1
E1
and MXZ-4A80VA-
,
E1
E1
No. OB378

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Summary of Contents for Mitsubishi Electric MSZ-GA35VA

  • Page 1: Table Of Contents

    No. OB378 SERVICE MANUAL Wireless type Models MSZ-GA22VA - (WH) MSZ-GA25VA - (WH) MSZ-GA35VA - (WH) CONTENTS 1. TECHNICAL CHANGES ····································2 2. PART NAMES AND FUNCTIONS······················3 3. SPECIFICATION·················································5 4. NOISE CRITERIA CURVES ·······························6 5. OUTLINES AND DIMENSIONS ·························7 6. WIRING DIAGRAM ············································8 Indication of model name 7.

  • Page 2: Technical Changes

    MSZ-GA22VA - MSZ-A09YV - MSZ-GA25VA - MSZ-A12YV - MSZ-GA35VA - 1. Indication of capacity has been changed.(BTU base kW base) 2. Control method between indoor and outdoor has been changed. 3. Power supply method has been changed (change to supply from outdoor unit).

  • Page 3: Part Names And Functions

    PART NAMES AND FUNCTIONS INDOOR UNIT MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - Air inlet Heat exchanger Front panel Panel Air cleaning filter (Optional parts,Anti- Allergy Enzyme Filter, Blue bellows type) Fan guard Catechin air filter Air outlet Vertical vane Horizontal vane...

  • Page 4: Indoor Unit

    ACCESSORIES MSZ-GA22VA - INDOOR UNIT MSZ-GA25VA - MSZ-GA35VA - Installation plate Installation plate fixing screw 4 o 25 mm Remote controller holder Fixing screw for 3 3.5 o 1.6 mm (Black) Battery (AAA) for remote controller Wireless remote controller Felt tape (Used for left or left-rear piping)

  • Page 5: Specification

    SPECIFICATION Indoor model MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - Function Cooling Cooling Cooling Heating Heating Heating Single phase Single phase Single phase Power supply 230V,50Hz 230V,50Hz 230V,50Hz Air flow(Super High) K /h Capacity Air flow(High W /Med. W /Low W )

  • Page 6: Noise Criteria Curves

    NOISE CRITERIA CURVES MSZ-GA22VA - MSZ-GA35VA - MSZ-GA25VA - FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING Test conditions, Test conditions, Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19: Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:...

  • Page 7: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit : mm MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - 11X26 Oblong hole 11X20 Oblong hole INDOOR UNIT Installation plate Air in Wall hole [65 Indoor unit Installation plate Liquid line [6.35-0.5m Gas line [9.52-0.43m Insulation [35 O.D [19 I.D...

  • Page 8: Wiring Diagram

    WIRING DIAGRAM MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - MODELS WIRING DIAGRAM INDOOR UNIT INDOOR ELECTRONIC CONTROL P.C. BOARD RT13 TAB3 230V~ RT12 DB111 T111 TO OUTDOOR UNIT RT11 12-24V NR11 CONNECTING CN201 LD104 CN211 101(A) 105(T) INTERLOCK POWER MONITOR SW P.C.

  • Page 9: Service Functions

    SERVICE FUNCTIONS MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - 8-1. TIMER SHORT MODE For service, set time can be shortened by short circuit of JPG and JPS the electronic control P.C. board. The time will be shortened as follows. (Refer to 9-7.)

  • Page 10: Troubleshooting

    TROUBLESHOOTING MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - 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.
  • Page 11 3. Troubleshooting procedure 1) First, check if the OPERATION INDICATOR lamp on the indoor unit is flashing on and off to indicate an abnormality. To make sure, check how many times the abnormality indication is flashing on and off before starting service work. 2) Before servicing check that the connector and terminal are connected properly.

  • Page 12: Failure Mode Recall Function

    9-2. Failure mode recall function Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table disappears, the memorized failure details can be recalled. This mode is very useful when the unit needs to be repaired for the abnormality which doesn't recur. 1.
  • Page 13 2. Indoor unit failure mode table NOTE:Blinking patterns of this mode differs from the ones of Troubleshooting check table(9-4.). Left lamp of Abnormal point OPERATION Detection method Check point (Failure mode) INDICATOR lamp Not lighted Normal – – When the room temperature thermistor Room temperature Refer to the characteristics of the room 1-time flash...
  • Page 14 9-3. Instruction of troubleshooting Start Indoor unit Indoor unit Indoor unit operates. OPERATION INDICATOR operates. doesn't receive Outdoor unit doesn't lamp on the indoor unit is Outdoor unit the signal from operate normally. flashing on and off. doesn't remote controller. operate.

  • Page 15: Troubleshooting Check Table

    9-4. Troubleshooting check table · Flashing of OPERATION INDICATOR lamp (left-hand side lamp) Lighted indicates abnormalities. OPERATION INDICATOR Blinking Not lighted NOTE : Before taking measures, make sure that the symptom reappears for accurate troubleshooting. Self check table Abnormal Operation indicator lamp Symptom Detection method Check point...
  • Page 16 ON), the indoor electronic control P.C. board turns OFF the indoor fan motor with OPERATION INDICATOR lamp flashing. 9-5. Trouble criterion of main parts MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - Part name Check method and criterion Figure Room temperature Measure the resistance with a tester.

  • Page 17: Troubleshooting Flow

    9-6. Troubleshooting flow When OPERATION INDICATOR lamp flashes 3-time. Indoor fan does not operate. Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan doesn't operate. Turn OFF the power supply. Insert a stick such as a screw driver into the air outlet, and check if there is any catch in the rotation of the line Pay careful attention to the high voltage on...

  • Page 18: Check Of Remote Controller And Receiver P.c. Board

    Indoor unit operates by pressing EMERGENCY OPERATION switch, but does not operate with the remote controller. Check of remote controller and receiver P.C. board wCheck if the remote controller is exclusive for this air conditioner. Switch on the remote controller. Is LCD display on the the remote Replace the batteries.
  • Page 19 The unit does not operate with the remote controller. Also, OPERATION INDICATOR lamp does not light up by pressing EMERGENCY OPERATION switch. Check of indoor electronic control P.C. board and indoor fan motor Turn OFF the power supply. Measure the resistance between CN211 3 Remove indoor fan motor connector CN211 and Short circuit: and 4 of the indoor fan motor connector.

  • Page 20: How To Check Mis-Wiring And Serial Signal Error

    When POWER lamp flashes ON and OFF in every 0.5-second. Outdoor unit does not operate. How to check mis-wiring and serial signal error Turn OFF the power supply. Is there rated voltage of Check the power 230V AC in the power supply.
  • Page 21 When All lamps flash ON and OFF every 0.5-second. Indoor unit and outdoor unit do not operate. Check of installation of the horizontal vane Start Turn OFF the power supply. Relock the stopper of the Is the stopper of the horizontal vane horizontal vane to the indoor unit.

  • Page 22: Electromagnetic Noise Enters Into Tv Sets Or Radios

    Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the Extend the distance between antennas and the indoor the antennas and the indoor unit within 3m, or is the unit, or the antennas and the distance between the outdoor unit.
  • Page 23 9-7. Test point diagram and voltage MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - Indoor electronic control P.C. board Power supply input Varistor (NR11) 230V AC Fuse(F11) Indoor fan motor (CN211) 1311V DC 3(-) Fiducial terminal of cathode side on measur- ing high-voltage DC...

  • Page 24: Disassembly Instructions

    Locking lever lever. Connector MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (1) Remove the horizontal vane. (2) Remove the screw caps of the panel.
  • Page 25 OPERATING PROCEDURE PHOTOS Photo 2 2. Removing the electronic control P.C. board, the power monitor receiver P.C. board, SW P.C. board and the terminal block (1) Remove the horizontal vane, the panel (Refer to 1.) and the corner box. (2) Remove the screw of V.A. clamp, and then the indoor/outdoor connecting wire.
  • Page 26 OPERATING PROCEDURE PHOTOS Photo 5 4. Removing the horizontal vane motor unit (1) Remove the horizontal vane and the panel. (Refer to 1.) (2) Remove the screws of the horizontal vane motor unit, and pull out the horizontal vane motor unit. (See Photo 5.) Screws of the (3) Disconnect the connector from the horizontal vane motor horizontal vane...

  • Page 27: Parts List

    PARTS LIST MSZ-GA22VA - (WH) MSZ-GA25VA - (WH) MSZ-GA35VA - (WH) 11-2. ACCESSORY AND REMOTE 11-1. INDOOR UNIT STRUCTURAL PARTS CONTROLLER (See 12.) 11-1. INDOOR UNIT STRUCTURAL PARTS Q'ty/unit Symbol Part No. in Wiring Part name MSZ-GA22VA - MSZ-GA25VA -...
  • Page 28 MSZ-GA22VA - (WH) MSZ-GA25VA - (WH) MSZ-GA35VA - (WH) 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS INTERLOCK SWITCH (FAN) SW P.C. BOARD POWER MONITOR RECEIVER P.C. BOARD VARISTOR FUSE ROOM TEMPERATURE THERMISTOR 11-4. INDOOR UNIT HEAT EXCHANGER...
  • Page 29 11-3. INDOOR UNIT ELECTRICAL PARTS AND FUNCTIONAL PARTS Q'ty/unit Symbol in Wiring Part No. Part name MSZ-GA22VA - MSZ-GA25VA - MSZ-GA35VA - Remarks Diagram (WH) (WH) (WH) E02 751 509 BEARING MOUNT E02 001 504 SLEEVE BEARING E02 897 702...

  • Page 30: Optional Parts

    Model Part No. MSZ-GA22VA- MSZ-GA25VA- MAC-415FT-E MSZ-GA35VA- Replacement of the air cleaning filter (1) Remove the catechin air filter(left one) (2) Remove the air cleaning filter(Blue The air cleaning filter is not attached bellows type) from the catechin air filter.
  • Page 32 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 Distributed in Jan. 2005. No. OB378 6 Made in Japan Specifications subject to change without notice.

This manual is also suitable for:

Msz-ga25vaMsz-ga22vaMsz-ga25vaMsz-ga22va

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