Mitsubishi MSZ-GE22VA Service Manual
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Mitsubishi MSZ-GE22VA Service Manual

Indoor unit
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SPLIT-TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Models
MSZ-GE22VA -
MSZ-GE22VA
MSZ-GE25VA
MSZ-GE35VA
MSZ-GE42VA
MSZ-GE50VA
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision E:
• Detail of the indoor fan speed control in COOL or
DRY operation has been added (9-1.3, 9-2.3).
Please void OBH515 REVISED EDITION-D.
E1
E1
E1
E1
E1
Outdoor unit service manual
E1
MUZ-GE·VA Series (OBH516)
MXZ-A·VA Series (OB377)
E1
MXZ-8A140A (OC316)
MXZ-B·VA Series (OB554)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. NOISE CRITERIA CURVES ······························ 6
5. OUTLINES AND DIMENSIONS ························ 8
6. WIRING DIAGRAM ············································ 9
7. REFRIGERANT SYSTEM DIAGRAM ············· 10
8. SERVICE FUNCTIONS ····································11
9. MICROPROCESSOR CONTROL ··················· 13
10. TROUBLESHOOTING ····································· 20
11. DISASSEMBLY INSTRUCTIONS ···················· 39
PARTS CATALOG (OBB515)
No. OBH515
REVISED EDITION-E

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  • Page 1: Table Of Contents

    DRY operation has been added (9-1.3, 9-2.3). SPLIT-TYPE AIR CONDITIONERS Please void OBH515 REVISED EDITION-D. INDOOR UNIT No. OBH515 SERVICE MANUAL REVISED EDITION-E Models MSZ-GE22VA - MSZ-GE25VA - MSZ-GE35VA - MSZ-GE42VA - MSZ-GE50VA - MSZ-GE60VA - Outdoor unit service manual MUZ-GE·VA Series (OBH516) MSZ-GE71VA - MXZ-A·VA Series (OB377)
  • Page 2 Revision A: • 11. DISASSEMBLY INSTRUCTIONS has been corrected. 11-6. Photo 9 has been changed. Revision B: • MSZ-GE42VA - and MSZ-GE50VA - have been added. Revision C: • MSZ-GE60VA - and MSZ-GE71VA - have been added. Revision D: • The model name for MSZ-GE25VA was added to 8-3. "AUTO RESTART FUNCTION". Because the model name was not written there.

  • Page 3: Msz-Ge25Va

    TECHNICAL CHANGES MSZ-GE22VA - MSZ-GE25VA - MSZ-GE35VA - MSZ-GE42VA - MSZ-GE50VA - MSZ-GE60VA - MSZ-GE71VA - 1. New model...

  • Page 4: Part Names And Functions

    PART NAMES AND FUNCTIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Air filter (Catechin air filter) Front panel Air cleaning filter (Anti-Allergy Enzyme Filter, option) Air inlet Heat exchanger Remote controller Air outlet Fan guard Vertical vane Horizontal vane Display section Remote control receiving section Operation indicator lamp Emergency operation switch (E.O.

  • Page 5: Specification

    SPECIFICATION MSZ- MSZ- MSZ- MSZ- MSZ- MSZ- MSZ- Indoor model GE22VA GE25VA GE35VA GE42VA GE50VA GE60VA GE71VA Power supply Single phase 230 V, 50 Hz Cooling Power input Heating Cooling 0.22 0.29 0.39 0.35 0.51 Running current Heating 0.23 0.31 0.36 0.53 0.51...

  • Page 6: Noise Criteria Curves

    (MV), (MV1) 12 VDC Vertical vane motor (MV2) 12 VDC MSZ-GE60VA MSZ-GE71VA Varistor (NR11) S10K300E3K1 (ERZV14D471) Terminal block (TB) NOISE CRITERIA CURVES MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High...
  • Page 7 MSZ-GE60VA MSZ-GE71VA FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz...

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Unit: mm 11×20 Oblong hole 11×26 Oblong hole Installation plate Air in Wall hole ø65 Indoor unit Installation plate Piping Drain hose Air out Insulation ø35 O.D Liquid line ø6.35 - 0.5 m (Flared connection ø6.35) Gas line ø9.52 - 0.43 m...

  • Page 9: Wiring Diagram

    WIRING DIAGRAM MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA...

  • Page 10: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Unit: mm Refrigerant pipe ø9.52 (MSZ-GE22/25/35/42VA) ø12.7 (MSZ-GE50VA) (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe ø6.35...

  • Page 11: Service Functions

    SERVICE FUNCTIONS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA 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 10-7.2,3.) Set time: 1 minute →...
  • Page 12 How to release “AUTO RESTART FUNCTION” Turn off the main power for the unit. Solder the jumper wire to JR07 on the indoor electronic control P.C. board. (Refer to 10-7.2,3.) MSZ-GE60VA MSZ-GE71VA MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA JR07 Indoor electronic control P.C.

  • Page 13: Microprocessor Control

    MICROPROCESSOR CONTROL MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA WIRELESS REMOTE CONTROLLER MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Signal transmitting section Operation display section OPERATE/STOP FAN SPEED CONTROL button (ON/OFF) button OFF TIMER button OPERATION SELECT button ON TIMER button ECONO COOL button...
  • Page 14 INDOOR UNIT DISPLAY SECTION Operation Indicator lamp The operation indicator at the right side of the indoor unit indicates the operation state. •The following indication applies regardless of shape of the indication. Indication Operation state Room temperature The unit is operating to About 2°C or more away Lighted reach the set temperature...
  • Page 15 These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approximate 12 V) transmitted from indoor microprocessor. (2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA AUTO SWING...
  • Page 16 (5) STOP (operation OFF) and ON TIMER standby In the following cases, the horizontal vane returns to the closed position. (a) When OPERATE/STOP (ON/OFF) button is pressed (POWER OFF). (b) When the operation is stopped by the emergency operation. (c) When ON TIMER is ON standby. (6) Dew prevention During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour, the vane angle automatically changes to Angle 1 for dew prevention.
  • Page 17 (4) SWING ( ) MODE By selecting SWING mode with WIDE VANE CONTROL button, the vertical vane swings horizontally. The remote controller displays “ ”. Swing mode is cancelled when WIDE MODE CONTROL button is pressed once again. 9-6. TIMER OPERATION 1.
  • Page 18 9-7. WEEKLY TIMER OPERATION (MSZ-GE60VA MSZ-GE71VA) • A maximum of 4 ON or OFF timers can be set for individual days of the week. • A maximum of 28 ON or OFF timers can be set for a week. NOTE: The simple ON/OFF timer setting is available while the weekly timer is on.
  • Page 19 (5) Press button to turn the weekly timer ON. ( lights.) •When the weekly timer is ON, the day of the week whose timer setting is complete, will light. Press button again to turn the weekly timer OFF. ( goes out.) NOTE: The saved settings will not be cleared when the weekly timer is turned OFF.

  • Page 20: Troubleshooting

    TROUBLESHOOTING MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA 10-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of 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 confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.
  • Page 21 If horizontal vane is not installed correctly, all of the operation indicator lamps will blink. In this case, install the horizontal vane correctly by following the procedures NOTE: Before installation of the horizontal vane, turn OFF the power supply. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA In procedure lock the stoppers until they click into place.
  • Page 22 This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-4.) disappears, the memorized failure details can be recalled. 1. Flow chart of failure mode recall function for the indoor/outdoor unit MSZ-GE22VA MSZ-GE25VA MSZ-GE60VA MSZ-GE35VA MSZ-GE42VA MSZ-GE71VA...
  • Page 23 2. Indoor unit failure mode table Upper lamp of OP- Abnormal point ERATION INDICA- Condition Correspondence (Failure mode) TOR lamp Not lighted Normal — — The room temperature thermistor short or 1-time fl ash every Room temperature Refer to the characteristics of the room temperature open circuit is detected every 8 seconds dur- 0.5-second thermistor...
  • Page 24 10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit does Indoor unit oper- OPERATION INDICATOR Outdoor unit does not receive the ates. lamp on the indoor unit is not operate normally. Outdoor unit signal from re- fl ashing ON and OFF. mote controller.
  • Page 25 10-4. TROUBLESHOOTING CHECK TABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after the power ON), the indoor fan motor turns OFF and OPERATION INDICATOR lamp flashes. OPERATION INDICATOR Lighted Blinking...

  • Page 26: Trouble Criterion Of Main Parts

    fi rst has manual. setting not operate. the priority. 10-5. TROUBLE CRITERION OF MAIN PARTS MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA MSZ-GE60VA MSZ-GE71VA Part name Check method and criterion Figure Measure the resistance with a tester.

  • Page 27: Troubleshooting Flow

    10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Pay enough attention to the high voltage on the fan motor connector CN211.
  • Page 28 MSZ-GE60VA MSZ-GE71VA The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Pay enough attention to the high voltage on the fan motor connector CN211. Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch.
  • Page 29 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Press OPERATE/STOP (ON/OFF) button on the remote controller. Is LCD display on the remote controller Replace the batteries.
  • Page 30 C Check of indoor P.C. board and indoor fan motor MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane Measure the resistance of indoor fan Short circuit: motor connector CN151 from the indoor motor.
  • Page 31 MSZ-GE60VA MSZ-GE71VA Turn OFF the power supply. Remove indoor fan motor connector CN211 and Short/open circuit: Measure the resistance between CN211 Replace the indoor fan motor. vane motor connector CN151 from the indoor electronic of the indoor fan motor connector. control P.C.
  • Page 32 D How to check miswiring and serial signal error MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring.
  • Page 33 MSZ-GE60VA MSZ-GE71VA Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring. Press EMERGENCY OPERATION switch once. Does the upper lamp of OPERATION INDICA- TOR lamp light up? <Confi...
  • Page 34 E Check of installation of the horizontal vane Turn OFF the power supply. Re-lock the stopper of the hori- Is the stopper of the horizontal vane Turn ON the zontal vane to the indoor unit. locked to the indoor unit correctly? power supply.
  • Page 35 F Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 3 m, or is the the indoor unit, and/or the antennas and the distance between the antennas and the outdoor unit.
  • Page 36 10-7. TEST POINT DIAGRAM AND VOLTAGE 1. Indoor power P.C. board, Indoor terminal P.C. board MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA Indoor terminal P.C. board Indoor power P.C. board Varistor (NR11) Resistor (R111) Fuse (F11)( ) Indoor fan motor (CN211) 325 VDC (–) GND (high-...
  • Page 37 2. Indoor electronic control P.C. board MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA Indoor electronic control P.C. board Timer short mode point JPG JPS (Refer to 8-1.) Room temperature thermistor RT11 (CN111) Indoor coil thermistor RT12, RT13 (CN112) Interlock switch (FAN) (CN1R1)
  • Page 38 3. Indoor electronic control P.C. board, Indoor terminal P.C. board, Power monitor receiver SW P.C. board MSZ-GE60VA MSZ-GE71VA Indoor terminal P.C. board Indoor electronic control P.C. board Release of Auto restart function Indoor coil thermistor Solder the Jumper wire to JR07. Interlock switch Terminal Varistor...

  • Page 39: Disassembly Instructions

    Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 11-1. MSZ-GE22VA MSZ-GE25VA MSZ-GE35VA MSZ-GE42VA MSZ-GE50VA NOTE: Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (1) Remove the horizontal vanes.
  • Page 40 OPERATING PROCEDURE PHOTOS 2. Removing the indoor electronic control P.C. Photo 2 Electrical box Earth wire board and the room temperature thermistor (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the screw of the V.A. clamp. Remove the V.A. clamp and the indoor/outdoor connecting wire.
  • Page 41 OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor/outdoor connecting wire. (Refer to (3) Remove the indoor electronic control P.C. board hold- (4) Disconnect the following connectors: <Indoor electronic control P.C.
  • Page 42 OPERATING PROCEDURE PHOTOS 6. Removing the indoor fan motor, the indoor coil Photo 6 thermistor, and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the indoor electronic control P.C. board hold- er, the electrical box and the nozzle assembly.
  • Page 43 11-2. MSZ-GE60VA MSZ-GE71VA NOTE: Turn OFF power supply before disassembling. OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (1) Remove the horizontal vanes. (2) Remove the screw caps of the panel. Remove the Front panel Horizontal vanes screws of the panel. (3) Hold the lower part of both ends of the panel and pull it slightly toward you, and then remove the panel by pushing it upward.
  • Page 44 OPERATING PROCEDURE PHOTOS 2. Removing the indoor electronic control P.C. Photo 2 Electrical box board, the power monitor receiver SW P.C. board and the indoor terminal P.C. board (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the screw of the V.A. clamp. Screw of the Remove the V.A.
  • Page 45 OPERATING PROCEDURE PHOTOS 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the V.A. clamp, and then the indoor/outdoor connecting wire. (Photo 2) (3) Remove the electrical cover. (Photo 2) (4) Disconnect the following connectors on the electronic control P.C.
  • Page 46 OPERATING PROCEDURE PHOTOS 7. Removing the water cut, the indoor fan motor, Photo 8 the indoor coil thermistor, and the line flow fan (1) Remove the panel (Refer to 1.) and the corner box. (2) Remove the power monitor receiver holder, the electri- cal box and the nozzle assembly.
  • Page 48 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2008 MITSUBISHI ELECTRIC CO., LTD Distributed in Jun. 2010. No. OBH515 REVISED EDITION-E 5 Distributed in Mar. 2010. No. OBH515 REVISED EDITION-D 5 Distributed in Oct. 2009. No. OBH515 REVISED EDITION-C 5 Distributed in Dec.

This manual is also suitable for:

Msz-ge42vaMsz-ge25vaMsz-ge50vaMsz-ge35vaMsz-ge60vaMsz-ge71va

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