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OUTDOOR UNIT
SERVICE MANUAL
Models
MUZ-GF60VE
MUZ-GF60VE
MUZ-GF71VE
MUZ-GF71VE
MUZ-GF60VE -
MUZ-GF71VE -
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
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E1
ER1
,
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E2
ER2
,
-
E1
ER1
,
-
E2
ER2
,
,
,
E1
ER1
ET1
,
,
E1
ER1
ET1
Revision C:
• MUZ-GF60VE-
GF71VE-
Please void OBH635 REVISED EDITION-C.
HFC
utilized
R410A
ET1
,
ET2
,
ET1
,
ET2
,
Indoor unit service manual
MSZ-GF•VE Series (OBH634)
CONTENTS
1. TECHNICAL CHANGES ······························3
2. PART NAMES AND FUNCTIONS ··················4
3. SPECIFICATION ········································5
4. NOISE CRITERIA CURVES ··························7
5. OUTLINES AND DIMENSIONS ·····················8
6. WIRING DIAGRAM ·····································9
7. REFRIGERANT SYSTEM DIAGRAM ··········· 10
8. PERFORMANCE CURVES ························ 12
9. ACTUATOR CONTROL ····························· 21
10. SERVICE FUNCTIONS ······························ 22
11. TROUBLESHOOTING ······························· 23
12. DISASSEMBLY INSTRUCTIONS ················· 41
PARTS CATALOG (OBB635)
,
,
and MUZ-
E2
ER2
ET2
,
,
have been added.
E2
ER2
ET2
No. OBH635
REVISED EDITION-C
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Table of Contents
Related Manuals for Mitsubishi Electric MUZ-GF60VE-E1
Summary of Contents for Mitsubishi Electric MUZ-GF60VE-E1
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Page 1: Table Of Contents
Revision C: • MUZ-GF60VE- and MUZ- GF71VE- have been added. Please void OBH635 REVISED EDITION-C. OUTDOOR UNIT No. OBH635 SERVICE MANUAL REVISED EDITION-C utilized R410A Models MUZ-GF60VE MUZ-GF60VE MUZ-GF71VE MUZ-GF71VE Indoor unit service manual MSZ-GF•VE Series (OBH634) CONTENTS 1. TECHNICAL CHANGES ······························3 2. - 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.
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Page 3: Technical Changes
TECHNICAL CHANGES MUZ-GF60VE - MUZ-GF71VE - 1. New model MUZ-GF60VE - MUZ-GF71VE - 1. New model MUZ-GF60VE - MUZ-GF60VE - MUZ-GF71VE - MUZ-GF71VE - 1. Model name has been changed. MUZ-GF60VE - MUZ-GF60VE - MUZ-GF71VE - MUZ-GF71VE - 1. Model name has been changed. MUZ-GF60VE - MUZ-GF60VE - MUZ-GF71VE -... -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MUZ-GF60VE - MUZ-GF71VE - Air inlet (back and side) Piping Drain hose Air outlet Drain outlet MUZ-GF60VE - MUZ-GF71VE - Air inlet (back and side) Piping Drain hose Air outlet Drain outlet ACCESSORIES Model MUZ-GF60/71VE Drain socket OBH635C... -
Page 5: Specification
SPECIFICATION Outdoor model MUZ-GF60VE MUZ-GF71VE Power supply Single phase, 230 V, 50 Hz Cooling 6.1 (1.4 - 7.5) 7.1 (2.0 - 8.7) Capacity Rated frequency (Min. - Max.) Heating 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9) Breaker Capacity Cooling 1,790 2,130 Power input 1 (Set) - Page 6 Specifi cations and rated conditions of main electric parts Model MUZ-GF60VE MUZ-GF71VE Item Smoothing 560 μF 450 V (CB1, CB2, CB3) capacitor Fuse (F601, F880, F901) T3.15AL250 V (IC932) 5 A 600 V IGBT module (IC700) 20 A 600 V Expansion valve coil (LEV) 12 VDC...
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Page 7: Noise Criteria Curves
NOISE CRITERIA CURVES MUZ-GF60VE MUZ-GF71VE FUNCTION SPL(dB(A)) LINE FUNCTION SPL(dB(A)) LINE COOLING COOLING 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 BAND CENTER FREQUENCIES, Hz Test conditions Cooling: Dry-bulb temperature 35°C... -
Page 8: Outlines And Dimensions
OUTLINES AND DIMENSIONS MUZ-GF60VE - MUZ-GF71VE - Unit: mm REQUIRED SPACE *1 500 mm or more when front and sides of unit are clear 417.5 Air in Air out 2-holes 10 21 *2 When any 2 sides of left, right and rear of unit are clear Service panel Liquid refrigerant pipe joint... -
Page 9: Wiring Diagram
WIRING DIAGRAM MUZ-GF60VE - MUZ-GF71VE - OBH635C... -
Page 10: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MUZ-GF60VE Unit: mm Muffler Refrigerant pipe ø 15.88 #100 4-way valve (with heat insulator) Stop valve (with service port) Outdoor Flared connection Discharge heat Ambient temperature exchanger temperature thermistor Defrost thermistor RT62 thermistor RT65 RT61 Compressor Outdoor heat exchanger temperature thermistor... - Page 11 Unit: mm MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE Refrigerant piping: m Piping size O.D: mm Max. Length A Max. Height difference B Liquid MUZ-GF60 6.35 15.88 MUZ-GF71 9.52 Indoor unit Max. Height difference Max. Length Outdoor unit ADDITIONAL REFRIGERANT CHARGE (R410A: g) Refrigerant piping length (one way) Outdoor unit Model...
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Page 12: Performance Curves
PERFORMANCE CURVES MUZ-GF60VE MUZ-GF71VE The standard specifications apply only to the operation of the air conditioner under normal conditions. Since operating condi- tions vary according to the areas where these units are installed, the following information has been provided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve. - Page 13 Total input (Cooling : at Rated frequency Indoor intake air Wet-bulb temperature( ) Outdoor intake air Dry-bulb temperature (°C) Heating capacity (at Rated frequency) 19.9 25.3 18.4 23.4 16.9 21.4 15.3 19.5 13.8 17.5 12.3 15.6 10.7 13.6 11.7 Outdoor intake air Wet-bulb temperature (°C) Total input (Heating : at Rated frequency 19.9...
- Page 14 8-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR MUZ-GF60VE Correction of Cooling capacity Correction of Heating input Correction of Cooling input Correction of Heating capacity The operational frequency The operational frequency The operational frequency The operational frequency of compressor (Hz) of compressor (Hz) of compressor (Hz) of compressor (Hz)
- Page 15 Outdoor unit current MUZ-GF60VE MUZ-GF71VE Ambient temperature (°C) Ambient temperature(°C) Ambient humidity(%) Ambient humidity(%) HEAT operation Condition: Indoor Outdoor Dry bulb temperature (°C) 20.0 20.0 Wet bulb temperature (°C) 14.5 14.5 Operation: Test run operation (Refer to 8-3.) Outdoor unit current MUZ-GF60VE MUZ-GF71VE Ambient temperature (°C)
- Page 16 PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GF60VE CAPACITY: 6.1 kW SHF: 0.79 INPUT: 1790 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 7.17 4.37 0.61 1432 6.86 4.19 0.61 1504 6.59 4.02 0.61 1575 6.34...
- Page 17 PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GF60VE CAPACITY: 6.1 kW SHF: 0.79 INPUT: 1790 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 5.98 3.65 0.61 1754 5.49 3.35 0.61 1862 5.06 3.09 0.61 1933 6.28 3.08...
- Page 18 PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GF71VE CAPACITY: 7.1 kW SHF: 0.78 INPUT: 2130 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 8.34 5.01 0.60 1704 7.99 4.79 0.60 1789 7.67 4.60 0.60 1874 7.38...
- Page 19 PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GF71VE CAPACITY: 7.1 kW SHF: 0.78 INPUT: 2130 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 6.96 4.17 0.60 2087 6.39 3.83 0.60 2215 5.89 3.54 0.60 2300 7.31 3.51...
- Page 20 PERFORMANCE DATA HEAT operation at Rated frequency MUZ-GF60VE CAPACITY: 6.8 kW INPUT: 1810 W OUTDOOR WB (°C) INDOOR DB (°C) INPUT INPUT INPUT INPUT INPUT INPUT INPUT 4.28 1177 5.17 1412 6.05 1593 6.94 1720 7.82 1828 8.64 1882 9.52 1919 4.08 1267...
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Page 21: Actuator Control
ACTUATOR CONTROL MUZ-GF60VE MUZ-GF71VE 9-1. OUTDOOR FAN MOTOR CONTROL The fan motor turns ON/OFF, interlocking with the compressor. [ON] The fan motor turns ON 5 seconds before the compressor starts up. [OFF] The fan motor turns OFF 15 seconds after the compressor has stopped running. 5 seconds 15 seconds Compressor... -
Page 22: Service Functions
SERVICE FUNCTIONS MUZ-GF60VE MUZ-GF71VE 10-1. CHANGE IN DEFROST SETTING Changing defrost finish temperature <JS> To change the defrost finish temperature, cut/solder the JS wire of the outdoor inverter P.C. board. (Refer to 11-6-1.) Defrost fi nish temperature (°C) Jumper wire MUZ-GF 60VE 71VE... -
Page 23: Troubleshooting
TROUBLESHOOTING MUZ-GF60VE MUZ-GF71VE 11-1. 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 con- firming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug. - Page 24 11-2. 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 (11-3.) disappears, the memorized failure details can be recalled. MSZ-GF60VE MSZ-GF60VE2 1.
- Page 25 2. Flow chart of the detailed outdoor unit failure mode recall function Operational procedure The outdoor unit might be abnormal. Check if outdoor unit is abnormal according to the following procedures. Make sure that the remote controller is set to the failure mode recall function. 1.
- Page 26 3. Outdoor unit failure mode table The upper lamp of Indoor/outdoor Outdoor unit OPERATION Abnormal point LED indication unit failure Condition Remedy failure mode INDICATOR (Failure mode / protection) (Outdoor P.C. board) mode recall recall function lamp function (Indoor unit) None (Normal) —...
- Page 27 3. Outdoor unit failure mode table The upper lamp of Indoor/outdoor Outdoor unit OPERATION Abnormal point LED indication unit failure Condition Remedy failure mode INDICATOR (Failure mode / protection) (Outdoor P.C. board) mode recall recall function lamp function (Indoor unit) 11-time fl...
- Page 28 11-3. TROUBLESHOOTING CHECK TABLE Abnormal point/ Symptom LED indication Condition Remedy Condition Outdoor unit 1-time fl ash every Outdoor power sys- Overcurrent protection cut-out operates 3 consecutive times • Reconnect connector of compres- does not op- 2.5 seconds within 1 minute after the compressor gets started. sor.
- Page 29 Abnormal point/ Symptom LED indication Condition Remedy Condition Outdoor unit 8-time fl ash Zero cross detecting Zero cross signal cannot be detected. • It occurs with following cases. operates. 2.5 seconds OFF circuit 1 Instantaneous power voltage drop. (Short time power failure) 2 Distortion of primary voltage •...
- Page 30 11-5. TROUBLESHOOTING FLOW A How to check inverter/compressor Disconnect the connector between compressor and the IGBT module (IC700). Check the voltage between terminals. See 11-5. “Check of open phase”. Replace the inverter P.C. board. Are the voltages balanced? Check the compressor. See 11-5.
- Page 31 D Check of compressor winding ●Disconnect the connector between the compressor and the IGBT module (IC700), and measure the resistance between the compressor terminals. <<Measurement point>> At 3 points BLK-WHT Measure the resistance between the lead wires at 3 points. BLK-RED WHT-RED <<Judgement>>...
- Page 32 G Check of outdoor thermistors Disconnect the connector of thermistor in the outdoor P.C. board (see below table), and measure the resistance of thermistor. Replace the thermistor except RT64. Is the resistance of thermistor normal? When RT64 is abnormal, replace the inverter P.C. (Refer to 11-6.1.) board.
- Page 33 I Check of outdoor fan motor Disconnect the connectors CN931 and CN932 from the inverter P.C. board. Check the connection between the connector CN931 and CN932. Is the resistance between each ter- minal of outdoor fan motor normal? (Refer to 11-4.) Disconnect CN932 from the inverter P.C.
- Page 34 K Check of LEV (Expansion valve) MSZ-GF60VE MSZ-GF60VE2 MSZ-GF71VE MSZ-GF71VE2 Turn ON the power supply. <Preparation of the remote controller> While pressing both OPERATION SELECT button and TEMP button on the remote controller at the same time, press RESET button. First, release RESET button.
- Page 35 L Check of inverter P.C. board Check the outdoor fan motor. (Refer to 11-5. .) Is the fuse (F901) blown on the in- verter P.C. board? Check the connection of the connectors (CN931, CN932) of the outdoor fan motor. If the connection is poor, make it correct. Operate the outdoor unit by starting EMERGENCY OPERATION.
- Page 36 M How to check miswiring and serial signal error Turn the power supply OFF. NOTE: Refer to the indoor 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 37 N Check of outdoor refrigerant circuit The unit occasionally stops when the Was the operation started with Has the operation stopped stop valve is opened or closed during the stop valve closed, and was during pump down? operation. Open the stop valve and it opened during operation? start the cooling operation again.
- Page 38 O 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 39 11-6. TEST POINT DIAGRAM AND VOLTAGE 1. Inverter P.C. board MUZ-GF60VE MUZ-GF71VE Fuse (F601) T3.15AL250V R.V. coil (CN602) 230VAC Heater (CN601) 230VAC Signal of out- door fan motor (CN931) LEV connector (CN724) Output to drive outdoor fan motor Defrost thermistor (CN932) /RT61 (CN671) Discharge temperature...
- Page 40 2. Relay P.C. board MUZ-GF60VE MUZ-GF71VE CN60 To inverter P.C. board CN681 (CN680) L68B(-) 10 VDC L68A(+) OBH635C...
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Page 41: 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 2 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 42 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board Photo 3 and relay P.C. board (1) Remove the cabinet and panels. (Refer to 1.) Screws of the (2) Disconnect the lead wire to the reactor and the following con- relay panel Inverter P.C Earth wires...
- Page 43 OPERATING PROCEDURE PHOTOS 4. Removing the discharge temperature thermistor, Photo 5 defrost thermistor, outdoor heat exchanger tempera- Ambient Outdoor heat temperature exchanger ture thermistor and ambient temperature thermistor thermistor temperature thermistor (1) Remove the cabinet and panels. (Refer to 1.) (2) Disconnect the lead wire to the reactor and the following connectors: <Inverter P.C.
- Page 44 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2013 MITSUBISHI ELECTRIC CORPORATION Distributed in Dec. 2015. No. OBH635 REVISED EDITION-C Distributed in Aug. 2014. No. OBH635 REVISED EDITION-B Distributed in Dec. 2013. No. OBH635 REVISED EDITION-A New publication, effective Dec.