Mitsubishi Electric MSZ-GF60VE Service Manual
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Mitsubishi Electric MSZ-GF60VE Service Manual

Indoor unit
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SPLIT-TYPE AIR CONDITIONERS

INDOOR UNIT

SERVICE MANUAL

Models
MSZ-GF60VE
MSZ-GF71VE
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
-
E1
-
E1
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
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. MICROPROCESSOR CONTROL ····················11
10. TROUBLESHOOTING ····································· 18
11. DISASSEMBLY INSTRUCTIONS ···················· 32
PARTS CATALOG (OBB634)
No. OBH634
Outdoor unit service manual
MUZ-GF·VE Series (OBH635)
MXZ-D·VA Series (OBH626)
MXZ-6C122VA (OBH584)

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Summary of Contents for Mitsubishi Electric MSZ-GF60VE

  • Page 1: Table Of Contents

    SPLIT-TYPE AIR CONDITIONERS INDOOR UNIT No. OBH634 SERVICE MANUAL Models MSZ-GF60VE MSZ-GF71VE Outdoor unit service manual MUZ-GF·VE Series (OBH635) MXZ-D·VA Series (OBH626) MXZ-6C122VA (OBH584) CONTENTS 1. TECHNICAL CHANGES ··································· 3 2. PART NAMES AND FUNCTIONS ····················· 4 3. SPECIFICATION ················································ 5 4.
  • Page 2 Use the specifi ed refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.

  • Page 3: Technical Changes

    TECHNICAL CHANGES MSZ-GF60VE - MSZ-GF71VE - 1. New model These models are compatible with the outdoor units with low standby power control. Connecting these models to the MUZ-GF·VE-series outdoor units enables the low standby power control. Refer to the techni- cal guide (OBT17) about the low standby power control.

  • Page 4: Part Names And Functions

    PART NAMES AND FUNCTIONS MSZ-GF60VE MSZ-GF71VE Front panel Air fi lter (Nano platinum fi lter) Air cleaning fi lter (Electrostatic anti-allergy enzyme fi lter, option) Air inlet Air outlet Fan guard Remote controller Heat exchanger Vertical vane Horizontal vane Display section Operation indicator lamp Emergency operation switch (E.

  • Page 5: Specification

    SPECIFICATION Indoor model MSZ-GF60VE MSZ-GF71VE Power supply Single phase 230 V, 50 Hz Cooling Power input Heating Cooling 0.43 0.51 Running current Heating 0.53 0.51 Model RC0J56-AF Cooling 0.43 0.51 Current Heating 0.53 0.51 Dimensions W × H × D 1100 ×...

  • Page 6: Noise Criteria Curves

    (MV1) 12 VDC Vertical vane motor (MV2) 12 VDC Varistor (NR11) S10K300E3K1 (ERZV14D471) Terminal block (TB) Relay (X1) NOISE CRITERIA CURVES MSZ-GF60VE MSZ-GF71VE FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE COOLING COOLING Super High Super High HEATING...

  • Page 7: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MSZ-GF60VE MSZ-GF71VE Unit: mm 11×26 Oblong hole 11×20 Oblong hole Installation plate 1100 1090 199.5 199.5 Indoor unit 110.5 49.5 500.5 439.5 Air in Installation plate Wall hole Ø75 Piping ( 70° ) Drain hose Air out...

  • Page 8: Wiring Diagram

    (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 (MSZ-GF60VE) ø9.52 (MSZ-GF71VE) (with heat insulator) Refrigerant flow in cooling Refrigerant flow in heating OBH634...

  • Page 9: Service Functions

    SERVICE FUNCTIONS MSZ-GF60VE MSZ-GF71VE 8-1. TIMER SHORT MODE For service, the following set time can be shortened by short circuit of JPG and JPS on the electronic control P.C. board. (Refer to 10-7.1.) • The set time for the ON/OFF timer can be reduced to 1 second for each minute.
  • Page 10 8-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation in the same mode just before the shutoff of the main power. Operation If the main power has been cut, the operation settings remain.

  • Page 11: Microprocessor Control

    MICROPROCESSOR CONTROL MSZ-GF60VE MSZ-GF71VE WIRELESS REMOTE CONTROLLER Signal transmitting section LONG button WIDE VANE CONTROL button OPERATION SELECT button Operation display section FAN SPEED CONTROL button ECONO COOL button VANE CONTROL button TIME, TIMER set buttons POWERFUL button FORWARD button...
  • Page 12 9-2. DRY ( ) OPERATION (1) Press OPERATE/STOP (ON/OFF) button. OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone. (2) Select DRY mode with OPERATION SELECT button. (3) The set temperature is determined from the initial room temperature. 1.
  • Page 13 9-5. AUTO VANE OPERATION 1. Horizontal vane (1) Vane motor drive 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 (approximately 12 V) transmitted from indoor microprocessor. (2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button.
  • Page 14 (11) LONG MODE ( By pressing LONG button indoor fan speed becomes faster than setting fan speed on the remote controller, and the horizontal vane moves to the position for LONG mode. The remote controller displays “ ”. LONG mode is can- celled when LONG button is pressed once again or VANE CONTROL button is pressed or ECONO COOL button is pressed in COOL mode.
  • Page 15 9-6. TIMER OPERATION 1. How to set the time (1) Check that the current time is set correctly. NOTE: Timer operation will not work without setting the current time. Initially “0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button. How to set the current time (a) Press the CLOCK set button.
  • Page 16 9-7. WEEKLY TIMER OPERATION • 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. In this case, the ON/OFF timer has priority over the weekly timer;...
  • Page 17 (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 18: Troubleshooting

    TROUBLESHOOTING MSZ-GF60VE MSZ-GF71VE 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 after confirm- ing the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug.
  • Page 19 5. How to install the horizontal vane 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. Lock Check the upper and the lower vane.

  • Page 20: Failure Mode Recall Function

    10-2. 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 (10-4.) disappears, the memorized failure details can be recalled. 1.
  • Page 21 2. Indoor unit failure mode table Upper lamp of OP- Abnormal point ERATION INDICA- Condition Remedy (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 22 10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit oper- Indoor unit does OPERATION INDICATOR Outdoor unit does not receive the ates. lamp on the indoor unit is not operate normally. signal from re- Outdoor unit fl ashing ON and OFF. does not operate.
  • Page 23 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 24: Trouble Criterion Of Main Parts

    fi rst has manual. setting not operate. the priority. 10-5. TROUBLE CRITERION OF MAIN PARTS MSZ-GF60VE MSZ-GF71VE Part name Check method and criterion Figure Room temperature Measure the resistance with a tester.

  • Page 25: Troubleshooting Flow

    10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor 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 26 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. Press OPERATE/STOP (ON/OFF) button on the remote controller. Is LCD display on the remote controller Replace the batteries. (Refer to 10-1.4.) visible? (Not clear) Remove the batteries, then set them back...
  • Page 27 C Check of indoor P.C. board and indoor fan motor 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.
  • Page 28 D How to check miswiring and serial signal error Turn the power supply OFF. NOTE: Refer to the outdoor unit service manual. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. Was the indoor unit ever connected to the Multi •...
  • Page 29 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 30 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 31 10-7. TEST POINT DIAGRAM AND VOLTAGE 1. Indoor electronic control P.C. board, Indoor terminal P.C. board, Power monitor receiver SW P.C. board MSZ-GF60VE MSZ-GF71VE Indoor terminal P.C. board Indoor electronic control P.C. board To disable "Auto restart func- Indoor coil thermistor tion"...

  • Page 32: Disassembly Instructions

    Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 11-1. MSZ-GF60VE MSZ-GF71VE NOTE: Turn OFF power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the panel Photo 1 (1) Remove the horizontal vanes.
  • Page 33 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 34 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 35 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 36 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2013 MITSUBISHI ELECTRIC CORPORATION Distributed in Mar. 2013. No. OBH634 New publication, effective Mar. 2013 Made in Japan Specifications are subject to change without notice.

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Msz-gf71ve

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