Table of Contents
Advertisement
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
SERVICE MANUAL
Models
MUZ-GE25VA
MUZ-GE25VA
MUZ-GE25VAD
MUZ-GE35VA
MUZ-GE35VA2
MUZ-GE42VA
MUZ-GE25VA
MUZ-GE25VAD
MUZ-GE33VA
MUZ-GE35VA
MUZ-GE35VA2
MUZ-GE35VAD
MUZ-GE42VA
MUZ-GE42VAD
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision E:
• MUZ-GE25VAD-
MUZ-GE50VAD-
and MUZ-GE80VAD-
Please void OBH532 REVISED EDITION-D.
MUZ-GE50VA
-
A1
MUZ-GE50VA2
-
A2
MUZ-GE50VAD
-
A1
MUZ-GE60VA
-
A1
MUZ-GE60VAD
-
A1
MUZ-GE71VA
-
A1
MUZ-GE71VAD
-
A2
MUZ-GE80VA
-
A1
MUZ-GE80VA2
-
A1
MUZ-GE80VAD
-
A1
, MUZ-GE35VAD-
A1
, MUZ-GE60VAD-
A1
have been added.
A1
HFC
REVISED EDITION-E
utilized
R410A
Indoor unit service manual
MSZ-GE•VA Series (OBH531)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. NOISE CRITERIA CURVES ·····························11
5. OUTLINES AND DIMENSIONS ······················ 13
6. WIRING DIAGRAM ·········································· 15
7. REFRIGERANT SYSTEM DIAGRAM ············· 27
8. PERFORMANCE CURVES ····························· 31
9. ACTUATOR CONTROL ··································· 63
10. SERVICE FUNCTIONS ···································· 64
11. TROUBLESHOOTING ····································· 65
12. DISASSEMBLY INSTRUCTIONS ···················· 86
PARTS CATALOG (OBB532)
, MUZ-GE42VAD-
,
A1
A1
, MUZ-GE71VAD-
A1
A1
No. OBH532
-
A1
-
A1
-
A1
-
A1
-
A1
-
A1
-
A1
-
A1
-
A1
-
A1
Advertisement
Table of Contents
Related Manuals for Mitsubishi Electric MUZ-GE25VA-a1
Summary of Contents for Mitsubishi Electric MUZ-GE25VA-a1
-
Page 1: Table Of Contents
Revision E: • MUZ-GE25VAD- , MUZ-GE35VAD- , MUZ-GE42VAD- MUZ-GE50VAD- , MUZ-GE60VAD- , MUZ-GE71VAD- SPLIT-TYPE AIR CONDITIONERS and MUZ-GE80VAD- have been added. Please void OBH532 REVISED EDITION-D. OUTDOOR UNIT No. OBH532 SERVICE MANUAL REVISED EDITION-E utilized R410A Models MUZ-GE25VA MUZ-GE50VA MUZ-GE25VA MUZ-GE50VA2 MUZ-GE25VAD MUZ-GE50VAD... - Page 2 Use the specified 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: Muz-Ge33Va
TECHNICAL CHANGES MUZ-GE25VA - MUZ-GE33VA - MUZ-GE35VA - MUZ-GE42VA - MUZ-GE50VA - MUZ-GE60VA - MUZ-GE71VA - MUZ-GE80VA - 1. New model MUZ-GE35VA - MUZ-GE35VA2 - MUZ-GE50VA - MUZ-GE50VA2 - MUZ-GE80VA - MUZ-GE80VA2 - 1. Inverter P.C. board has been changed. MUZ-GE25VA - MUZ-GE25VA - 1. -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD Air inlet (back and side) Piping Drain hose Air outlet Drain outlet MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Air inlet (back and side) Piping Drain hose Air outlet Drain outlet OBH532E... - Page 5 MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD Air inlet (back and side) Piping Drain hose Air outlet Drain outlet ACCESSORIES MUZ-GE25VA MUZ-GE25VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE33VA MUZ-GE50VA MUZ-GE71VA MUZ-GE71VAD Model MUZ-GE35VA MUZ-GE35VA2 MUZ-GE50VA2 MUZ-GE80VA MUZ-GE80VA2 MUZ-GE35VAD MUZ-GE50VAD MUZ-GE80VAD MUZ-GE42VA MUZ-GE42VAD Drain socket Drain cap OBH532E...
-
Page 6: Specification
SPECIFICATION Outdoor model MUZ-GE25VA- MUZ-GE25VA- MUZ-GE25VAD MUZ-GE33VA Power supply Single phase, 230 V, 50 Hz Cooling 2.5 (1.1 - 3.5) 3.3(1.4 - 3.9) Capacity Rated frequency (Min.-Max.) Heating 3.2 (1.3 - 4.5) 3.2 (1.3 - 4.1) 3.2 (1.3 - 4.5) 4.0 (1.4 - 4.8) Breaker Capacity Cooling... - Page 7 Outdoor model MUZ-GE35VA MUZ-GE35VA2- MUZ-GE35VA2- MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD Power supply Single phase, 230 V, 50 Hz Cooling 3.5 (1.4 - 3.9) 3.5 (1.1 - 4.0) 4.2(0.9-4.8) Capacity Rated frequency (Min.-Max.) Heating 4.0 (1.4 - 4.8) 4.0 (1.6 - 5.3) 5.4(1.4-6.0) Breaker Capacity Cooling 1,010...
- Page 8 Outdoor model MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Power supply Single phase, 230 V, 50 Hz Cooling 5.0 (1.4 - 5.4) 4.8 (1.4 - 5.4) Capacity Rated frequency (Min.-Max.) Heating 5.8 (1.4 - 7.2) Breaker Capacity Cooling 1,640 1,480 Power input 1 (Total) Heating 1,650 Cooling...
- Page 9 Outdoor model MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD Power supply Single phase, 230 V, 50 Hz Cooling 6.0 (1.5 - 7.5) 7.1 (2.4- 8.7) 8.0 (2.4 - 9.2) 7.8 (2.4 - 9.2) Capacity Rated frequency (Min.-Max.) Heating 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9) 9.0 (2.2 - 11.1) Breaker Capacity...
-
Page 10: Obh532E
Specifi cations and rated conditions of main electric parts Model MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- MUZ- Item GE25VA GE25VAD GE33VA GE35VA GE35VA2 GE35VAD GE42VA GE42VAD GE50VA GE50VA2 GE50VAD 600 μF/620 μF 420 V — (C62, C63) Smoothing capacitor —... -
Page 11: Noise Criteria Curves
NOISE CRITERIA CURVES MUZ-GE25VA MUZ-GE33VA MUZ-GE25VAD MUZ-GE35VA 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 MUZ-GE42VA MUZ-GE35VA2... - Page 12 MUZ-GE50VA MUZ-GE60VA MUZ-GE50VA2 MUZ-GE60VAD FUNCTION SPL(dB(A)) LINE FUNCTION SPL(dB(A)) LINE MUZ-GE50VAD 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 MUZ-GE71VA MUZ-GE80VA...
-
Page 13: Outlines And Dimensions
OUTLINES AND DIMENSIONS MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA Unit: mm MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD REQUIRED SPACE Basically open 100 mm or more without any obstruction in front and on both sides of the unit. Drain hole ø42 Air in Air in Open two sides of left, right, or rear side. -
Page 14: Obh532E
MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD Unit: mm MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD REQUIRED SPACE 500 mm or more 417.5 Air in 100 mm or more Air out 2-holes 10 21 500 mm or more Service panel Liquid refrigerant pipe joint Refrigerant pipe (flared) 6.35 (MUZ-GE60) Ø... -
Page 15: Wiring Diagram
WIRING DIAGRAM MUZ-GE25VA - MUZ-GE35VA OBH532E... -
Page 16: Obh532E
MUZ-GE33VA OBH532E... -
Page 17: Obh532E
MUZ-GE25VA - MUZ-GE35VA2 OBH532E... -
Page 18: Obh532E
MUZ-GE25VAD MUZ-GE35VAD OBH532E... -
Page 19: Obh532E
MUZ-GE42VA OBH532E... -
Page 20: Obh532E
MUZ-GE42VAD OBH532E... -
Page 21: Obh532E
MUZ-GE50VA OBH532E... -
Page 22: Obh532E
MUZ-GE50VA2 OBH532E... -
Page 23: Obh532E
MUZ-GE50VAD OBH532E... -
Page 24: Obh532E
MUZ-GE60VA MUZ-GE71VA MUZ-GE80VA OBH532E... -
Page 25: Obh532E
MUZ-GE80VA2 OBH532E... -
Page 26: Obh532E
MUZ-GE60VAD MUZ-GE71VAD MUZ-GE80VAD OBH532E... -
Page 27: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM Unit: mm MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA Refrigerant pipe ø9.52 4-way valve (with heat insulator) Muffler Outdoor heat exchanger Stop valve temperature (with service port) thermistor Outdoor Muffler Discharge heat RT68 Flared connection exchanger temperature thermistor RT62 Ambient Compressor temperature thermistor... -
Page 28: Obh532E
Unit: mm MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Muffler Refrigerant pipe ø 12.7 #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 29: Obh532E
MUZ-GE71VA MUZ-GE71VAD Unit: mm MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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... -
Page 30: Obh532E
ADDITIONAL REFRIGERANT CHARGE (R410A: g) Refrigerant piping length (one way) Outdoor unit Model precharged 10 m 11 m 12 m 13 m 14 m 15 m 20 m MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZGE35VA2 MUZGE35VAD 1,150 MUZ-GE42VA MUZ-GE42VAD Calculation: X g = 30 g/m × (Refrigerant piping length (m) - 7) Refrigerant piping length (one way) Outdoor unit Model... -
Page 31: Performance Curves
PERFORMANCE CURVES MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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 32: Obh532E
Total input (Cooling : at Rated frequency Indoor intake air Wet-bulb temperature( ) Outdoor intake air Dry-bulb temperature (°C) Heating capacity (at Rated frequency) 18.2 22.7 27.0 26.2 20.0 23.8 26.4 16.8 21.0 24.9 24.1 18.5 21.9 24.4 15.4 19.2 22.8 22.1 16.9... -
Page 33: Obh532E
8-2. CAPACITY AND INPUT CORRECTION BY OPERATIONAL FREQUENCY OF COMPRESSOR MUZ-GE25VA MUZ-GE25VAD Correction of Cooling capacity Correction of Cooling input Correction of Heating capacity Correction of Heating input The operational frequency The operational frequency The operational frequency The operational frequency of compressor (Hz) of compressor (Hz) of compressor (Hz) -
Page 34: Obh532E
MUZ-GE50VA 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) MUZ-GE50VA2 MUZ-GE50VAD Correction of Cooling capacity Correction of Heating input... -
Page 35: Obh532E
MUZ-GE80VA2 MUZ-GE80VAD 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) 8-3. -
Page 36: Obh532E
MUZ-GE71VA MUZ-GE71VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE50VA2 MUZ-GE50VAD Ambient temperature(°C) Ambient temperature(°C) Ambient temperature(°C) Ambient humidity(%) Ambient humidity(%) Ambient humidity(%) MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD Ambient temperature(°C) Ambient temperature(°C) Ambient humidity(%) Ambient humidity(%) Outdoor unit current MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) Ambient humidity(%) Ambient humidity(%) -
Page 37: Obh532E
Outdoor unit current MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD Ambient temperature(°C) Ambient temperature (°C) Ambient temperature (°C) Ambient humidity(%) Ambient humidity(%) Ambient humidity(%) MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 11.0 11.0 10.0 10.0 Ambient temperature(°C) Ambient temperature(°C) Ambient humidity(%) Ambient humidity(%) OBH532E... -
Page 38: Obh532E
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-GE35VA2 MUZ-GE35VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE25VA MUZ-GE25VAD Ambient temperature (°C) Ambient temperature (°C) Ambient temperature (°C) MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE42VA MUZ-GE42VAD... -
Page 39: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE25VA MUZ-GE25VAD CAPACITY: 2.5 kW SHF: 0.96 INPUT: 560 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 2.94 2.29 0.78 2.81 2.19 0.78 2.70 2.11 0.78 2.60 2.03 0.78... -
Page 40: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE25VA MUZ-GE25VAD CAPACITY: 2.5 kW SHF: 0.96 INPUT: 560 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 2.45 1.91 0.78 2.25 1.76 0.78 2.08 1.62 0.78 2.58 1.70 0.66 2.40... -
Page 41: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE33VA CAPACITY: 3.3 kW SHF: 0.88 INPUT: 910 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 3.88 2.71 0.70 3.71 2.60 0.70 3.56 2.49 0.70 3.43 2.40 0.70 4.04... -
Page 42: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE33VA CAPACITY: 3.3 kW SHF: 0.88 INPUT: 910 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 3.23 2.26 0.70 2.97 2.08 0.70 2.74 1.92 0.70 3.40 1.97 0.58 3.17 1.84... -
Page 43: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE35VA CAPACITY: 3.5 kW SHF: 0.85 INPUT: 1010 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 4.11 2.76 0.67 3.94 2.64 0.67 3.78 2.53 0.67 3.64 2.44 0.67 4.29... -
Page 44: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE35VA CAPACITY: 3.5 kW SHF: 0.85 INPUT: 1010 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 3.43 2.30 0.67 3.15 2.11 0.67 1050 2.91 1.95 0.67 1091 3.61 1.98 0.55... -
Page 45: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE35VA2 MUZ-GE35VAD CAPACITY: 3.5 kW SHF: 0.82 INPUT: 920 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 4.11 2.63 0.64 3.94 2.52 0.64 3.78 2.42 0.64 3.64 2.33 0.64... -
Page 46: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE35VA2 MUZ-GE35VAD CAPACITY: 3.5 kW SHF: 0.82 INPUT: 920 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 3.43 2.20 0.64 3.15 2.02 0.64 2.91 1.86 0.64 3.61 1.87 0.52 3.36... -
Page 47: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE42VA MUZ-GE42VAD CAPACITY: 4.2 kW SHF: 0.77 INPUT: 1260 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 4.94 2.91 0.59 1008 4.73 2.79 0.59 1058 4.54 2.68 0.59 1109... -
Page 48: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE42VA MUZ-GE42VAD CAPACITY: 4.2 kW SHF: 0.77 INPUT: 1260 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 4.12 2.43 0.59 1235 3.78 2.23 0.59 1310 3.49 2.06 0.59 1361 4.33... -
Page 49: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE50VA CAPACITY: 5.0 kW SHF: 0.76 INPUT: 1640 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 5.88 3.41 0.58 1312 5.63 3.26 0.58 1378 5.40 3.13 0.58 1443 5.20... -
Page 50: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE50VA CAPACITY: 5.0 kW SHF: 0.76 INPUT: 1640 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 4.90 2.84 0.58 1607 4.50 2.61 0.58 1706 4.15 2.41 0.58 1771 5.15 2.37... -
Page 51: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE50VA2 MUZ-GE50VAD CAPACITY: 4.8 kW SHF: 0.77 INPUT: 1480 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 5.64 3.33 0.59 1184 5.40 3.19 0.59 1243 5.18 3.06 0.59 1302... -
Page 52: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE50VA2 MUZ-GE50VAD CAPACITY: 4.8 kW SHF: 0.77 INPUT: 1480 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 4.70 2.78 0.59 1450 4.32 2.55 0.59 1539 3.98 2.35 0.59 1598 4.94... -
Page 53: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE60VA MUZ-GE60VAD CAPACITY: 6.0 kW SHF: 0.78 INPUT: 1760 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 7.05 4.23 0.60 1408 6.75 4.05 0.60 1478 6.48 3.89 0.60 1549... -
Page 54: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE60VA MUZ-GE60VAD CAPACITY: 6.0 kW SHF: 0.78 INPUT: 1760 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 5.88 3.53 0.60 1725 5.40 3.24 0.60 1830 4.98 2.99 0.60 1901 6.18... -
Page 55: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE71VA MUZ-GE71VAD CAPACITY: 7.1 kW SHF: 0.79 INPUT: 2130 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 8.34 5.09 0.61 1704 7.99 4.87 0.61 1789 7.67 4.68 0.61 1874... -
Page 56: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE71VA MUZ-GE71VAD CAPACITY: 7.1 kW SHF: 0.79 INPUT: 2130 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 6.96 4.24 0.61 2087 6.39 3.90 0.61 2215 5.89 3.59 0.61 2300 7.31... -
Page 57: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE80VA CAPACITY: 8.0 kW SHF: 0.75 INPUT: 2560 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 9.40 5.36 0.57 2048 9.00 5.13 0.57 2150 8.64 4.92 0.57 2253 8.32... -
Page 58: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE80VA CAPACITY: 8.0 kW SHF: 0.75 INPUT: 2560 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 7.84 4.47 0.57 2509 7.20 4.10 0.57 2662 6.64 3.78 0.57 2765 8.24 3.71... -
Page 59: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE80VA2 MUZ-GE80VAD CAPACITY: 7.8 kW SHF: 0.76 INPUT: 2460 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT INPUT 9.17 5.32 0.58 1968 8.78 5.09 0.58 2066 8.42 4.89 0.58 2165... -
Page 60: Obh532E
PERFORMANCE DATA COOL operation a t Rated frequency MUZ-GE80VA2 MUZ-GE80VAD CAPACITY: 7.8 kW SHF: 0.76 INPUT: 2460 W OUTDOOR DB (°C) INDOOR INDOOR DB (°C) WB (°C) INPUT INPUT INPUT 7.64 4.43 0.58 2411 7.02 4.07 0.58 2558 6.47 3.75 0.58 2657 8.03... -
Page 61: Obh532E
PERFORMANCE DATA HEAT operation at Rated frequency MUZ-GE25VA MUZ-GE25VAD CAPACITY: 3.2 kW INPUT: 730 W OUTDOOR WB (°C) INDOOR DB (°C) INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT 1.60 2.02 2.43 2.85 3.26 3.68 4.06 4.48 1.50 1.92 2.30 2.72 3.10 3.52... -
Page 62: Obh532E
PERFORMANCE DATA HEAT operation at Rated frequency MUZ-GE71VA MUZ-GE71VAD CAPACITY: 8.1 kW INPUT: 2110 W OUTDOOR WB (°C) INDOOR DB (°C) INPUT INPUT INPUT INPUT INPUT INPUT INPUT INPUT 4.05 1097 5.10 1372 6.16 1646 7.21 1857 8.26 2005 9.32 2131 10.29 2194... -
Page 63: Actuator Control
ACTUATOR CONTROL MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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. -
Page 64: Service Functions
SERVICE FUNCTIONS MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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... -
Page 65: Troubleshooting
TROUBLESHOOTING MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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. -
Page 66: Obh532E
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. This mode is very useful when the unit needs to be repaired for the abnormality which does not recur. -
Page 67: Obh532E
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. With the remote controller headed towards the indoor unit, press TOO 1. -
Page 68: Obh532E
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 69: Obh532E
Intelligent power module (IPM): MUZ-GE25VA - , MUZ-GE35/50VA IGBT module (IC700): MUZ-GE60/71/80VAD 3. Outdoor unit failure mode table Power module (IPM): Other models 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. - Page 70 11-3. TROUBLESHOOTING CHECK TABLE Abnormal point/ Symptom LED indication Condition Remedy Condition Outdoor unit 1-time fl ash Frequency drop by Current from power outlet is nearing breaker capacity. The unit is normal, but check the operates. 2.5 seconds OFF current protection following.
- Page 71 11-4. TROUBLE CRITERION OF MAIN PARTS MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD Part name Check method and criterion Figure Defrost thermistor (RT61) Fin temperature thermistor (RT64) Measure the resistance with a tester. Ambient temperature Refer to 11-6.
- Page 72 11-5. TROUBLESHOOTING FLOW Intelligent power module (IPM): MUZ-GE25VA - , MUZ-GE35/50VA A How to check inverter/compressor IGBT module (IC700): MUZ-GE60/71/80VAD Power module (IPM): Other models Disconnect the connector between compressor and the intelligent power module (IPM)/ IGBT module (IC700)/ power module (IPM).
- Page 73 Intelligent power module (IPM): MUZ-GE25VA - , MUZ-GE35/50VA IGBT module (IC700): MUZ-GE60/71/80VAD Power module (IPM): Other models D Check of compressor winding ●Disconnect the connector between the compressor and the intelligent power module (IPM)/ IGBT module (IC700)/ power mod- ule (IPM) , and measure the resistance between the compressor terminals. 1. <<Measurement point>>...
- Page 74 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 75 I Check of outdoor fan motor MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Disconnect CN932 from the inverter P.C. board, and measure the resistance of the outdoor fan motor. Is the resistance of outdoor fan motor normal? Replace the outdoor fan motor.
- Page 76 J Check of power supply MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Disconnect the connector between compressor and intelligent power module. Rectify indoor/outdoor Turn ON power supply and press connecting wire. EMERGENCY OPERATION switch. Does the upper lamp of Is there voltage 230 VAC Replace the indoor OPERATION INDICATOR on the...
- Page 77 MSZ-GE25/33/35/42/50VA MSZ-GE60/71/80VA MSZ-GE60/71/80VAD K Check of LEV (Expansion valve) MSZ-GE35/50VA2 MSZ-GE80VA2 MSZ-GE25/35/42/50VAD Turn ON the power supply. <Preparation of the remote controller> While pressing both OPERATION SELECT button and TOO COOL button (MSZ-GE25/33/35/42/50)/ TEMP button (MSZ-GE60/71/80VA) on the remote controller at the same time, press RESET button. First, release RESET button.
- Page 78 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.
- Page 79 M How to check miswiring and serial signal error MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD 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 80 MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD 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 81 N 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 82 11-6. TEST POINT DIAGRAM AND VOLTAGE 1. Inverter P.C. board MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD Back side of unit DB61 F701 Bus-bar voltage Smoothing Smoothing Fuse Smoothing 260 - 300 VDC capacitor capacitor T3.15AL250V capacitor F801 Fuse 230 VAC T3.15AL250V CN721...
- Page 83 MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD Back side of unit F701 CN721 DB61 Smoothing Smoothing Smoothing Fuse R.V.coil Bus-bar voltage capacitor capacitor capacitor T3.15AL250V 230 VAC 260 - 300 VDC F801 Fuse 230 VAC T3.15AL250V F901 Fuse T3.15AL250V Output to drive compressor 230 VAC (LDU, LDV, LDW)
- Page 84 MUZ-GE60VA MUZ-GE71VA MUZ-GE80VA MUZ-GE80VA2 F62 Fuse F601 Fuse CN602 R.V. coil T2.0AL250V T3.15AL250V 230VAC Jumper wire for chang- ing defrost setting Jumper wire for pre- heat control setting CN931 CN671 Defrost Signal of out- thermistor (RT61) door fan motor CN671 Discharge temperature thermistor (RT62) CN671...
- Page 85 MUZ-GE60VAD MUZ-GE71VAD MUZ-GE80VAD F601 Fuse T3.15AL250V CN602 CN601 R.V. coil Heater 230VAC 230VAC CN931 Signal of outdoor fan motor CN724 LEV connector CN932 Output to drive outdoor CN671 fan motor Defrost thermistor (RT61) CN671 Discharge temperature F901 Fuse thermistor (RT62) T3.15AL250V CN671 Outdoor heat exchanger tem-...
-
Page 86: 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 two 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 87 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board Photo 3 Screws of the terminal block (1) Remove the cabinet and panels. (Refer to 1.) support and the back panel (2) Disconnect the lead wire to the reactor and the following con- Screws of the heat sink nectors: support and the separator...
- Page 88 OPERATING PROCEDURE PHOTOS 5. Removing outdoor fan motor Photo 6 (1) Remove the cabinet and panels. (Refer to 1.) Outdoor heat (2) Disconnect the following connectors: exchanger tempera- <Inverter P.C. board> ture thermistor CN932 (Fan motor) (3) Remove the propeller nut. (4) Remove the propeller.
- Page 89 12-2. MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD NOTE: Turn OFF power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws of the service panel. Screw of the top panel (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover.
- Page 90 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board Photo 3 Screws of the (1) Remove the cabinet and panels. (Refer to 1.) relay panel (2) Disconnect the lead wire to the reactor and the following con- nectors: <Inverter P.C.
- Page 91 OPERATING PROCEDURE PHOTOS 4. Removing the discharge temperature thermistor, Photo 6 Outdoor heat defrost thermistor, outdoor heat exchanger tempera- Ambient temperature exchanger tempera- thermistor ture thermistor and ambient temperature thermistor ture 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 92 12-3. MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD NOTE: Turn OFF power supply before disassembly. OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws of the service panel. Screws of the top panel (2) Remove the screws of the top panel. (3) Remove the screw of the valve cover.
- Page 93 OPERATING PROCEDURE PHOTOS 2. Removing the inverter assembly, inverter P.C. board Photo 3 Screw of the (1) Remove the cabinet and panels. (Refer to 1.) relay panel (2) Disconnect the lead wire to the reactor and the following con- Screws of the nectors: PB support Earth wires...
- Page 94 OPERATING PROCEDURE PHOTOS 4. Removing the discharge temperature thermistor, Photo 5 defrost thermistor, outdoor heat exchanger tempera- Outdoor heat Ambient tem- exchanger tempera- perature ture thermistor and ambient temperature thermistor thermistor ture 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 95 OBH532E...
- Page 96 HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2009 MITSUBISHI ELECTRIC CORPORATION Distributed in Sep. 2013. No. OBH532 REVISED EDITION-E Distributed in Apr. 2012. No. OBH532 REVISED EDITION-D Distributed in Jul. 2011. No. OBH532 REVISED EDITION-C Distributed in Jul.