Mitsubishi Electric MUZ-GE25VA-a1 User manual

SERVICE MANUAL
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
SPLIT-TYPE AIR CONDITIONERS
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•VA Series (OBH531)
PARTS CATALOG (OBB532)
MUZ-GE25VA
MUZ-GE25VAD
MUZ-GE33VA
MUZ-GE35VA
MUZ-GE35VA2
MUZ-GE35VAD
MUZ-GE42VA
MUZ-GE42VAD
Models
MUZ-GE25VA -A1 MUZ-GE50VA -A1
MUZ-GE25VA -A2 MUZ-GE50VA2 -A1
MUZ-GE25VAD -A1 MUZ-GE50VAD -A1
MUZ-GE33VA -A1 MUZ-GE60VA -A1
MUZ-GE35VA -A1 MUZ-GE60VAD -A1
MUZ-GE35VA2 -A1 MUZ-GE71VA -A1
MUZ-GE35VA2 -A2 MUZ-GE71VAD -A1
MUZ-GE35VAD -A1 MUZ-GE80VA -A1
MUZ-GE42VA -A1 MUZ-GE80VA2 -A1
MUZ-GE42VAD -A1 MUZ-GE80VAD -A1
No. OBH532
REVISED EDITION-E
Please void OBH532 REVISED EDITION-D.
Revision E:
• MUZ-GE25VAD- A1 , MUZ-GE35VAD- A1 , MUZ-GE42VAD- A1 ,
MUZ-GE50VAD- A1 , MUZ-GE60VAD- A1 , MUZ-GE71VAD- A1
and MUZ-GE80VAD- A1 have been added.

2
Revision A :
• MUZ-GE60VA- A1 , MUZ-GE71VA- A1 and MUZ-GE80VA- A1 have been added.
Revision B:
• MUZ-GE33VA- A1 and MUZ-GE42VA- A1 have been added.
Revision C:
• MUZ-GE35VA2- A1 , MUZ-GE50VA2- A1 and MUZ-GE80VA2- A1 have been added.
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.
Revision D:
• MUZ-GE25VA- A2 and MUZ-GE35VA2- A2 have been added.
Revision E:
• MUZ-GE25VAD- A1 , MUZ-GE35VAD- A1 , MUZ-GE42VAD- A1 , MUZ-GE50VAD- A1 , MUZ-GE60VAD- A1 , MUZ-GE71VAD- A1
and MUZ-GE80VAD- A1 have been added.
OBH532E

3
TECHNICAL CHANGES
1
MUZ-GE25VA - A1
MUZ-GE33VA - A1
MUZ-GE35VA - A1
MUZ-GE42VA - A1
MUZ-GE50VA - A1
MUZ-GE60VA - A1
MUZ-GE71VA - A1
MUZ-GE80VA - A1
1. New model
MUZ-GE35VA - A1 MUZ-GE35VA2 - A1
MUZ-GE50VA - A1 MUZ-GE50VA2 - A1
MUZ-GE80VA - A1 MUZ-GE80VA2 - A1
1. Inverter P.C. board has been changed.
MUZ-GE25VA - A1
MUZ-GE25VA - A2
1. Compressor has been changed.
2. Back panel has been changed.
3. Outdoor heat exchanger has been changed.
4. Reactor has been changed.
5. Inverter P.C. board has been changed.
6. Maximum heating capacity has been changed.
MUZ-GE35VA2 - A1
MUZ-GE35VA2 - A2
1. Compressor has been changed.
2. Back panel has been changed.
3. Outdoor heat exchanger has been changed.
4. Inverter P.C. board has been changed.
MUZ-GE25VA - A2 MUZ-GE25VAD - A1
MUZ-GE35VA2 - A2 MUZ-GE35VAD - A1
MUZ-GE42VA - A1 MUZ-GE42VAD - A1
MUZ-GE50VA2 - A1 MUZ-GE50VAD - A1
1. Inverter P.C. board has been changed.
MUZ-GE60VA - A1 MUZ-GE60VAD - A1
MUZ-GE71VA - A1 MUZ-GE71VAD - A1
MUZ-GE80VA2 - A1 MUZ-GE80VAD - A1
1. Outdoor heat exchanger has been changed.
2. R.V coil has been changed.
3. 4-Way valve has been changed.
4. Service panel has been changed.
5. Terminal block has been changed.
6. Inverter P.C. board has been changed.
OBH532E

4
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
Piping
Air outlet
Air inlet
(back and side)
Drain hose
Drain outlet
PART NAMES AND FUNCTIONS
2
MUZ-GE25VA MUZ-GE25VAD MUZ-GE33VA
MUZ-GE35VA MUZ-GE35VA2 MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD
MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD
OBH532E

5
ACCESSORIES
Model
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
Drain socket 1 1 1
Drain cap - 2 -
Piping
Air outlet
Drain outlet
Air inlet
(back and side)
Drain hose
MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD
MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD
OBH532E

6
Outdoor model MUZ-GE25VA- A1 MUZ-GE25VA- A2 MUZ-GE25VAD MUZ-GE33VA
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min.-Max.)
Cooling kW 2.5 (1.1 - 3.5) 3.3(1.4 - 3.9)
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 A10
Electrical data
Power input 1 (Total) Cooling W560 910
Heating 730 1,030
Running current 1
(Total)
Cooling A2.9 4.3
Heating 3.8 4.8
Power factor 1 (Total) Cooling %84 92
Heating 84 93
Starting current 1 (Total) A 3.8 4.8
Coefficient of performance
(COP) 1 (Total)
Cooling 4.46 3.63
Heating 4.38 3.88
Compressor
Model KNB073FFDHC KNB073FKVHC KNB092FFAHC
Output W 550 650
Current 1 Cooling A2.44 3.70
Heating 3.30 4.30
Refrigeration oil
(Model) L 0.32 (NEO22) 0.36 (NEO22) 0.32 (NEO22)
Fan motor
Model RC0J50-DB
Current 1 Cooling A0.24 0.31
Heating 0.27
Dimensions W × H × D mm 800 × 550 × 285
Weight kg 30
Special remarks
Dehumidification Cooling L/h 0.2 0.6
Air flow 1
Cooling
High
m3/h
–
Med. 1,806 1,956
Low 1,170 1,806
Heating
High 2,106 2,130
Med. 1,806 1,956
Low 1,452 1,476
Sound level 1 Cooling
dB(A)
46 47
Heating 48
Fan speed
Cooling
High
rpm
–
Med. 740 800
Low 490 740
Heating
High 860 870
Med. 740 800
Low 600 610
Fan speed regulator 3
Refrigerant filling capacity
(R410A)
kg 0.80
NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
SPECIFICATION
3
OBH532E

7
Outdoor model MUZ-GE35VA MUZ-GE35VA2-
A1
MUZ-GE35VA2-
A2
MUZ-GE35VAD MUZ-GE42VA MUZ-GE42VAD
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min.-Max.)
Cooling kW 3.5 (1.4 - 3.9) 3.5 (1.1 - 4.0) 4.2(0.9-4.8)
Heating 4.0 (1.4 - 4.8) 4.0 (1.6 - 5.3) 5.4(1.4-6.0)
Breaker Capacity A10
Electrical data
Power input 1 (Total) Cooling W1,010 920 1,260
Heating 1,030 990 1,540
Running current 1
(Total)
Cooling A4.7 4.4 5.8
Heating 4.8 4.6 7.0
Power factor 1 (Total) Cooling %93 91 94
Heating 93 94 96
Starting current 1 (Total) A 4.8 4.6 7.0
Coefficient of performance
(COP) 1 (Total)
Cooling 3.47 3.80 3.33
Heating 3.88 4.04 3.51
Compressor
Model KNB092FFAHC KNB092FNDHC SNB130FGBHT
Output W 650 900
Current 1 Cooling A4.10 3.76 5.19
Heating 4.30 4.06 6.38
Refrigeration oil
(Model) L 0.32 (NEO22) 0.45 (NEO22)
Fan motor
Model RC0J50-DB RC0J50-EA
Current 1 Cooling A0.31 0.35 0.32
Heating 0.27 0.31
Dimensions W × H × D mm 800 × 550 × 285
Weight kg 30 33 36
Special remarks
Dehumidification Cooling L/h 0.8 0.9 1.4
Air flow 1
Cooling
High
m3/h
–
Med. 1,956 1,872
Low 1,806 1,776 1,086
Heating
High 2,130 2,016
Med. 1,956 1,776
Low 1,476 1,386
Sound level 1 Cooling
dB(A)
47 50
Heating 48 51
Fan speed
Cooling
High
rpm
–
Med. 800 810
Low 740 770 490
Heating
High 870
Med. 800 770
Low 610
Fan speed regulator 3
Refrigerant filling capacity
(R410A)
kg 0.80 1.15
NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
OBH532E

8
Outdoor model MUZ-GE50VA MUZ-GE50VA2 MUZ-GE50VAD
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min.-Max.)
Cooling kW 5.0 (1.4 - 5.4) 4.8 (1.4 - 5.4)
Heating 5.8 (1.4 - 7.2)
Breaker Capacity A16
Electrical data
Power input 1 (Total) Cooling W1,640 1,480
Heating 1,650
Running current 1
(Total)
Cooling A7.4 6.8
Heating 7.4
Power factor 1 (Total) Cooling %96 94
Heating 96
Starting current 1 (Total) A 7.4
Coefficient of performance
(COP) 1 (Total)
Cooling 3.05 3.24
Heating 3.52
Compressor
Model SNB130FGBHT
Output W 900
Current 1 Cooling A6.69 6.09
Heating 6.72
Refrigeration oil
(Model) L 0.45 (NEO22)
Fan motor
Model RC0J60-AA
Current 1 Cooling A0.32
Heating 0.32
Dimensions W × H × D mm 840 × 850 × 330
Weight kg 54
Special remarks
Dehumidification Cooling L/h 1.8 1.6
Air flow 1
Cooling
High
m3/h
–
Med. 2,940
Low 1,740
Heating
High –
Med. 2,940
Low 2,142
Sound level 1 Cooling
dB(A)
54
Heating 56
Fan speed
Cooling
High
rpm
–
Med. 780
Low 480
Heating
High –
Med. 780
Low 580
Fan speed regulator 2
Refrigerant filling capacity
(R410A)
kg 1.55
NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
OBH532E

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
Capacity
Rated frequency (Min.-Max.)
Cooling kW 6.0 (1.5 - 7.5) 7.1 (2.4- 8.7)
8.0 (2.4 - 9.2) 7.8 (2.4 - 9.2)
Heating 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9) 9.0 (2.2 - 11.1)
Breaker Capacity A20
Electrical data
Power input 1 (Total) Cooling W1,760 2,130 2,560 2,460
Heating 1,770 2,110 2,540 2,550
Running current 1
(Total)
Cooling A7.8 9.4 11.3 10.8
Heating 7.8 9.5 11.2
Power factor 1 (Total) Cooling %98 99 98 99
Heating 98 97 99
Starting current 1 (Total) A 7.8 9.5 11.3 11.2
Coefficient of performance
(COP) 1 (Total)
Cooling 3.40 3.41 3.33 3.12 3.17
Heating 3.84 3.83 3.84 3.54 3.53
Compressor
Model SNB130FGBMT SNB172FEKMT
Output W 900 1,200
Current 1 Cooling A6.62 6.44 8.02 8.06 9.89 9.39 9.43
Heating 6.37 6.34 8.13 8.17 9.83 9.87
Refrigeration oil
(Model) L 0.35 (FV50S) 0.4 (FV50S)
Fan motor
Model RC0J60-BC
Current 1 Cooling A0.84 0.93 0.83 0.86
Heating 0.93 0.82
Dimensions W × H × D mm 840 × 880 × 330
Weight kg 50 53
Special remarks
Dehumidification Cooling L/h 1.9 2.2 2.9 2.7
Air flow 1
Cooling
High
m3/h
3,492 3,426
Med. 3,066 3,006
Low 1,692 1,512
Heating
High 2,952 2,892
Med. 2,952 2,892
Low 2,226 2,280
Sound level 1 Cooling
dB(A)
55
Heating 55
Fan speed
Cooling
High
rpm
950
Med. 840
Low 480 450
Heating
High 810
Med. 810
Low 620 650
Fan speed regulator 3
Refrigerant filling capacity
(R410A)
kg 1.55 1.90
NOTE: Test conditions are based on AS/NZS 3823.1.1.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C Wet-bulb temperature (24°C)
Heating: Indoor Dry-bulb temperature 20°C Wet-bulb temperature 15.5°C
Outdoor Dry-bulb temperature 7°C Wet-bulb temperature 6°C
Refrigerant piping length (one way): 5 m
1 Measured under rated operating frequency.
OBH532E

10
Specifications and rated conditions of main electric parts
Model
Item
MUZ-
GE25VA
MUZ-
GE25VAD
MUZ-
GE33VA
MUZ-
GE35VA
MUZ-
GE35VA2
MUZ-
GE35VAD
MUZ-
GE42VA
MUZ-
GE42VAD
MUZ-
GE50VA
MUZ-
GE50VA2
MUZ-
GE50VAD
Smoothing
capacitor
(C62, C63) 600 μF/620 μF 420 V —
( C61 )— 600 μF/620 μF 420 V
Diode module (DB61) 15 A 600 V 25 A 600 V
(DB65) 25 A 600 V
Fuse
(F62) —
(F61) T20AL250V
(F701, F801, F901) T3.15AL250V
(F601,F880, F901) —
Intelligent
power module /
Power module
1.
(IC932) —
(IPM) 15 A 600 V 20 A 600 V
Expansion valve
coil (LEV) 12 VDC
Reactor (L61) 18 mH 23 mH
(L) —
Power factor
controller (PFC) —
Current-limiting
PTC thermistor (PTC64, PTC65) 33 Ω
Terminal block (TB1, TB2) 3 P
Relay
(X63) 3 A 250 V
(X64) 20 A 250 V
(X601) —
(X602) —
R.V.coil (21S4) 220 - 240 VAC
IGBT (TR821) 30 A 600 V
Specifications and rated conditions of main electric parts
Model
Item
MUZ-GE60VA MUZ-GE60VAD MUZ-GE71VA MUZ-GE71VAD MUZ-GE80VA MUZ-GE80VA2 MUZ-GE80VAD
Smoothing
capacitor
(C61, C62, C63) —
( CB1, CB2, CB3 )560 μF 450 V
Diode module (DB61) —
(DB65) —
Fuse
(F62)
T2.0AL250V — T2.0AL250V — T2.0AL250V —
(F61) —
(F701, F801, F901) —
(F601,F880, F901) T3.15AL250V
Intelligent power
module
(IC932) 5A 600 V
(IPM) 20 A 600 V — 20 A 600 V — 20 A 600 V —
IGBT module (IC700) — 20 A 600 V — 20 A 600 V — 20 A 600 V
Expansion valve
coil (LEV) 12 VDC
Reactor (L61) —
(L) 340 μH
Power factor
controller
(PFC) 20 A 600 V — 20 A 600 V — 20 A 600 V —
(IC820) — 20 A 600 V — 20 A 600 V — 20 A 600 V
Current-limiting
PTC thermistor (PTC64, PTC65) 33 Ω
Terminal block (TB1, TB2) 3 P
Relay
(X63) —
(X64) 20 A 250 V
(X601) 3 A 250V
(X602) 3 A 250V
R.V.coil (21S4) 220 - 240 VAC
IGBT (TR821) —
1.
Intelligent power module: MUZ-GE25VA - A1 , MUZ-GE35/50VA
Power module: Other models
OBH532E