Mitsubishi MUZ-GE25VA(H), MUZ-GE35VA(H), MUZ-GE42VA(H), MUZ-GE50VA(H), MUZ-GE60VA Service Manual
...
SPLIT-TYPE AIR CONDITIONERS
OUTDOOR UNIT
Revision B:
• MUZ-GE60VA -
have been added.
Please void OBH516 REVISED EDITION-A.
E1
and MUZ-GE71VA - E1
SERVICE MANUAL
Models
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH -
E1
E1
E1
E1
E1
E1
HFC
utilized
R410A
MUZ-GE50VA -
No. OBH516
REVISED EDITION-B
E1
MUZ-GE50VAH MUZ-GE60VA MUZ-GE71VA -
E1
E1
E1
MUZ-GE25VA
MUZ-GE35VA
MUZ-GE42VA
Indoor unit service manual
MSZ-GE•VA Series (OBH515)
MSZ-CGE•VA Series (OBH523)
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 5
4. NOISE CRITERIA CURVES ······························ 7
5. OUTLINES AND DIMENSIONS ························ 9
6. WIRING DIAGRAM ···········································11
7. REFRIGERANT SYSTEM DIAGRAM ············· 18
8. PERFORMANCE CURVES ····························· 21
9. ACTUA TOR CONTROL ··································· 40
10. SERVICE FUNCTIONS ···································· 41
11. TROUBLESHOOTING ····································· 41
12. DISASSEMBLY INSTRUCTIONS ···················· 61
PARTS CATALOG (OBB516)
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision A:
• MUZ-GE42VA -
E1
, MUZ-GE42VAH - E1, MUZ-GE50VA - E1 and MUZ-GE50VAH - E1 have been added.
Revision B:
• MUZ-GE60VA - E1 and MUZ-GE71VA - E1 have been added.
2
1
TECHNICAL CHANGES
MUZ-GE25VA MUZ-GE35VA MUZ-GE42VA MUZ-GE50VA MUZ-GE60VA MUZ-GE71VA -
1. New model
E1
E1
E1
E1
E1
E1
MUZ-GE25VAH MUZ-GE35VAH MUZ-GE42VAH MUZ-GE50VAH -
E1
E1
E1
E1
3
2
PART NAMES AND FUNCTIONS
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH
MUZ-GE42VA MUZ-GE42VAH
Air inlet
(back and side)
Piping
Drain hose
Air outlet
Drain outlet
MUZ-GE50VA MUZ-GE50VAH
Air inlet
(back and side)
MUZ-GE60VA MUZ-GE71VA
Piping
Drain hose
Air outlet
Drain outlet
(GE50VA)
Air inlet
(back and side)
Piping
Drain hose
Air outlet
ACCESSORIES
Model MUZ-GE25/35/42VA MUZ-GE50VA MUZ-GE60/71VA
Drain socket 1 1 1
Drain cap - 2 -
Drain outlet
4
3
SPECIFICATION
MUZ-
Outdoor model
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min.-Max.)
Breaker Capacity A 10 16 20
Power input 1 (Total)
Running current 1
(Total)
Power factor 1 (Total)
Electrical data
Starting current
Coeffi cient of performance
(COP) 1 (Total)
Compressor
Fan motor
Dimensions W × H × D mm 800 × 550 × 285
Weight kg 30 33 36 54 50 53
Dehumidifi cation Cooling /h 0.2 0.9 1.4 1.8 2.3
1 (Total) A 3.7 4.6 6.6 7.0 7.9 9.4
Model
Output W 550 650 900 1,200
Current 1
Refrigeration oil (Model) cc 320 (NEO22) 450 (NEO22)
Model RC0J50-DB RC0J50-EA RC0J60-AA RC0J60-BC
Current
Cooling
Heating
Cooling
Heating 700 955 1,460 1,565 1,770 2,110
Cooling
Heating 3.7 4.6 6.6 7.0 7.9 9.4
Cooling
Heating 82 90 96 97 98
Cooling 4.59 4.05 3.46 3.30 3.40 3.33
Heating 4.57 4.19 3.70 3.71 3.84 3.83
Cooling
Heating 3.20 4.06 5.98 6.32 6.44 8.07
Cooling
1
Heating 0.27 0.31 0.32 0.93 0.82
kW
GE25VA
MUZ-
GE25VAH
2.5 (1.1 - 3.5) 3.5 (1.1 - 4.0) 4.2 (0.9 - 4.8) 5.0 (1.4 - 5.5) 6.0 (1.5 - 7.5) 7.1 (2.4 - 8.7)
3.2 (1.3 - 4.5) 4.0 (1.6 - 5.3) 5.4 (1.4 - 6.0) 5.8 (1.4 - 7.3) 6.8 (2.0 - 9.3) 8.1 (2.2 - 9.9)
W
A
%
A
A
545 865 1,215 1,515 1,760 2,130
2.9 4.2 5.6 6.8 7.8 9.3
82 90 94 96 98 99
KNB073FFDHC KNB092FFAHC
2.44 3.56 4.99 6.09 6.59 8.00
0.24 0.35 0.32 0.84 0.83
High
Cooling
Air fl ow 1
Heating
Sound level 1
Med. 1,806 1,872 2,940 3,066 3,006
Low 1,170 1,776 1,086 1,740 1,692 1,512
High 2,106 2,016 – 2,952 2,892
Med. 1,806 1,776 2,940 2,952 2,892
Low 1,452 1,386 2,142 2,226 2,280
Cooling
Heating 48 51 56 55
m3/h
dB(A)
High
Special remarks
Fan speed
Fan speed regulator 3 2 3
Refrigerant fi lling capacity (R410A) kg 0.80 1.15 1.55 1.90
NOTE: Test conditions are based on ISO 5151.
Cooling: Indoor Dry-bulb temperature 27°C Wet-bulb temperature 19°C
Outdoor Dry-bulb temperature 35°C
Heating: Indoor Dry-bulb temperature 20°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.
Cooling
Heating
Med. 740 810 780 840
Low 490 770 490 480 450
High 860 870 – 810
Med. 740 770 780 810
Low 600 610 580 620 650
rpm
MUZ-
GE35VA
MUZ-
GE35VAH
47 50 54 55
MUZ-
GE42VA
MUZ-
GE42VAH
SNB130FGBHT
- 3,492 3,426
- 950
MUZ-
GE50VA
MUZ-
GE50VAH
840 × 850 × 330
GE60VA
SNB130FGBMT SNB172FEKMT
350(FV50S) 400(FV50S)
MUZ-
840 × 880 × 330
MUZ-
GE71VA
5
Specifi cations and rating conditions of main electric parts
Item
Current
transformer
Smoothing
capacitor
Diode module
Fuse
Defrost heater (H) —
Intelligent power
module
Expansion valve
coil
Reactor (L, L61) 18 mH 23 mH 340 μH
Power factor
controller
Currentdetecting
resistor
Current-limiting
PTC thermistor
Terminal block (TB1, TB2) 3 P
Relay
R.V.coil (21S4) 220 - 240 V AC
Heater protector (26H) —
IGBT (TR821) 30 A 600 V —
(CT761, CT781) 15 A —
(C61, C62, C63,
C81, C82, C83,
CB1, CB2, CB3)
(F601, F701, F801,
(R937A,R937B) — 1.1 Ω 2 W —
Model
(DB61) 15 A 600 V 25 A 600 V —
(DB65) 25 A 600 V —
(F62) — T2.0AL250V
(F61) T20AL250V —
F880, F901)
(IC932) — 5 A 600 V
(IPM) 15 A 600 V 20 A 600 V
(LEV) 12 V DC
(PFC) — 20 A 600 V
(R61)
(R61,R62) —
(R825) 25 mΩ 5 W —
(R937, R938,
R939)
(PTC64,
PTC65)
(X63) 3 A 250 V —
(X64) 20 A 250 V
(X66) —
(X601) — 3 A 250 V
(X602) — 3 A 250 V
MUZ-
GE25VA
(CT) 20 A —
45 mΩ 5 W
(1 element)
MUZ-
GE25VAH
230 V
130 W
3 A 250 V
Open 45°C
MUZ-
GE35VA
—
100 mΩ 5 W
(2 elements)
430 mΩ 2 W —
—
—
MUZ-
GE35VAH
620 μF 420 V 560 μF 350 V
230 V
130 W
3 A 250 V
Open 45°C
MUZ-
GE42VA
GE42VAH
T3.15AL250V
230 V
—
130 W
33 Ω
—
3 A 250 V
—
Open 45°C
MUZ-
180 mΩ 5 W
(2 elements)
MUZ-
GE50VA
—
—
—
MUZ-
GE50VAH
230 V
120 W
—
3 A 250 V
Open 45°C
MUZ-
GE60VA
—
—
—
—
MUZ-
GE71VA
6
4
NOISE CRITERIA CURVES
MUZ-GE25VA MUZ-GE25VAH
FUNCTION
COOLING
HEATING
90
80
70
60
50
40
30
20
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
SPL(dB(A)) LINE
47
48
NC-10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MUZ-GE35VA MUZ-GE35VAH
FUNCTION
COOLING
HEATING
90
80
70
60
50
40
30
20
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
SPL(dB(A))
47
48
NC-10
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MUZ-GE42VA MUZ-GE42VAH
FUNCTION
COOLING
HEATING
90
80
70
60
50
40
30
20
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
SPL(dB(A)) LINE
50
51
NC-10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MUZ-GE50VA MUZ-GE50VAH
FUNCTION
COOLING
HEATING
90
80
70
60
50
40
30
20
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
SPL(dB(A)) LINE
54
56
NC-10
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
7
MUZ-GE60VA MUZ-GE71VA
FUNCTION
COOLING
HEATING
SPL(dB(A)) LINE
55
55
FUNCTION
COOLING
HEATING
SPL(dB(A)) LINE
55
55
90
80
70
60
50
40
30
20
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
NC-10
BAND CENTER FREQUENCIES, Hz
90
80
NC-70
70
60
NC-60
50
NC-50
NC-40
NC-30
40
30
20
NC-20
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
10
63 125 250 500 1000 2000 4000 8000
NC-10
BAND CENTER FREQUENCIES, Hz
Test conditions
Cooling: Dry-bulb temperature 35°C
Heating: Dry-bulb temperature 7°C Wet-bulb temperature 6°C
OUTDOOR UNIT
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1 m
MICROPHONE
8
5
OUTLINES AND DIMENSIONS
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH
MUZ-GE42VA MUZ-GE42VAH
REQUIRED SPACE
Drain hole ø42 (MUZ-GE25/35/42VA)
Drain hole ø33 (MUZ-GE25/35/42VAH)
40
800
17.5
69
Bolt pitch for
23
164.5
99.5
304~325
installation
170.5
Service port
100 mm or more
200 mm or more
Service panel
Liquid refrigerant pipe joint
Refrigerant pipe (flared) ø6.35
35
43
Gas refrigerant pipe joint
Refrigerant pipe (flared) ø9.52
344.5
285
550
44
Air in
2 holes 10 X 21
22.3
Handle
280
10
400
Air in
Air out
150
302.5
500 Bolt pitch for installation
100 mm or more
100 mm or more
350 m
Unit: mm
m o
r more
MUZ-GE50VA MUZ-GE50VAH
515
299
66
Air in
51
34
Air in
330
Air out
121
500
840
170
850
430
REQUIRED SPACE
Drain holes ø33(MUZ-GE50VA)
40
100 mm o
360
4 holes 10 × 21
80
r mo
re
500 mm or more
155
90
500 mm or more
198
100 mm or more
350 mm or more
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) ø6.35
30°
35°
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) ø12.7
9
MUZ-GE60VA MUZ-GE71VA
Unit: mm
330
880
50
452
175
417.5
Air in
Air out
109
500
840
Drain hole
40
2-holes 10 21
81
REQUIRED SPACE
42
100 mm or more
360
500 mm or more
100 mm or more
350 mm or more
500 mm or more
Service panel
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) Ø 6.35 (MUZ-GE60VA)
Ø 9.52 (MUZ-GE71VA)
35
44
164.5
99.5
195
Gas refrigerant
pipe joint
Refrigerant pipe
(flared)
Ø 15.88
10
6
MUZ-GE25VA MUZ-GE35VA
WIRING DIAGRAM
11
MUZ-GE25VAH MUZ-GE35VAH
12
MUZ-GE42VA
13
MUZ-GE42VAH
14
MUZ-GE50VA
15
MUZ-GE50VAH
16
MUZ-GE60VA MUZ-GE71VA
17
7
REFRIGERANT SYSTEM DIAGRAM
MUZ-GE25VA MUZ-GE25VAH
Refrigerant pipe ø9.52
(with heat insulator)
Stop valve
(with service port)
Flared connection
Flared connection
Stop valve
Refrigerant pipe ø6.35
(with heat insulator)
(with strainar)
4-way valve
Muffler
Capillary tube
ø3.0×ø2.0×240
Discharge
temperature
thermistor
RT62
LEV
Muffler
Compressor
Defrost
thermistor
RT61
Outdoor heat
exchanger
temperature
Outdoor
heat
exchanger
Refrigerant flow in cooling
Refrigerant flow in heating
thermistor
RT68
Ambient
temperature
thermistor
RT65
Strainer
#100
R.V. coil
heating ON
cooling OFF
Unit: mm
MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH
Refrigerant pipe ø9.52
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
Muffler
Stop valve
(with service port)
Capillary tube
ø3.0×ø2.0×240
Stop valve
(with strainar)
4-way valve
Discharge
temperature
thermistor
RT62
LEV
Muffler
Compressor
Defrost
thermistor
RT61
Capillary tube
ø3.0×ø1.8×600(×2)
Refrigerant flow in cooling
Refrigerant flow in heating
Outdoor
heat
exchanger
Strainer
#100
R.V. coil
heating ON
cooling OFF
Outdoor heat
exchanger
temperature
thermistor
RT68
Ambient
temperature
thermistor
RT65
Unit: mm
18
MUZ-GE50VA MUZ-GE50VAH
Unit: mm
Refrigerant pipe
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
ø
12.7
Stop valve
(with service port)
Stop valve
(with strainar)
4-way valve
Receiver
Muffler
#100
Discharge
temperature
thermistor
RT62
Compressor
Capillary tube
ø
3.6
×
ø
2.4×50
LEV
Strainer
#100
Outdoor
heat
Defrost
thermistor
RT61
Refrigerant flow in cooling
Refrigerant flow in heating
exchanger
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
heating ON
cooling OFF
Ambient
temperature
thermistor
RT65
MUZ-GE60VA
Refrigerant pipe
(with heat insulator)
Flared connection
Flared connection
Refrigerant pipe ø6.35
(with heat insulator)
ø
15.88
Stop valve
(with service port)
Stop valve
4-way valve
Strainer
#100
Muffler
#100
Discharge
temperature
thermistor
RT62
Compressor
Capillary tube
ø
4.0
×
ø
2.4×100
LEV
Strainer
#100
Outdoor
heat
Defrost
thermistor
RT61
Refrigerant flow in cooling
Refrigerant flow in heating
exchanger
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
heating ON
cooling OFF
Ambient
temperature
thermistor
RT65
19
MUZ-GE71VA
Refrigerant pipe
(with heat insulator)
ø
15.88
Flared connection
4-way valve
Stop valve
(with service port)
Muffler
#100
Discharge
temperature
thermistor
RT62
Defrost
thermistor
RT61
Outdoor
heat
exchanger
Ambient
temperature
thermistor
RT65
Unit: mm
Flared connection
Refrigerant pipe ø9.52
(with heat insulator)
Strainer
Stop valve
#100
Compressor
Capillary tube
ø
4.0
×
ø
2.4×100
LEV
Strainer
#100
Outdoor heat
exchanger
temperature
thermistor
RT68
R.V. coil
heating ON
cooling OFF
Refrigerant flow in cooling
Refrigerant flow in heating
MAX. REFRIGERANT PIPING LENGTH and MAX. HEIGHT DIFFERENCE
Refrigerant piping: m Piping size O.D: mm
Max. Length A Max. Height difference B Gas Liquid
MUZ-GE25/35/42 20 12 9.52
12.7
MUZ-GE60
MUZ-GE71 9.52
30 15
Indoor
unit
Max. Height
difference
B
Max. Length
A
15.88
Outdoor unit
6.35MUZ-GE50
ADDITIONAL REFRIGERANT CHARGE (R410A: g)
Model
MUZ-GE25 800
MUZ-GE35/42 1,150
Outdoor unit
precharged
5 m 6 m 7 m 8 m 9 m 10 m 11 m 12 m 13 m 14 m 15 m 20 m
0 0 0 30 60 90 120 150 180 210 240 390
Calculation: X g = 30 g/m × (Refrigerant piping length (m) - 7)
Model
Outdoor unit
precharged
7 m 10 m 15 m 20 m 25 m 30 m
MUZ-GE50 1,550 0 60 160 260 360 460
Calculation: X g = 20 g/m × (Refrigerant piping length (m) – 7)
Model
Outdoor unit
precharged
7 m 10 m 15 m 20 m 25 m 30 m
MUZ-GE60 1,550 0 0 100 200 300 400
Calculation: X g = 20 g/m × (Refrigerant piping length (m) – 10)
Model
Outdoor unit
precharged
7 m 10 m 15 m 20 m 25 m 30 m
MUZ-GE71 1,900 0 0 275 550 825 1,100
Calculation: X g = 55 g/m × (Refrigerant piping length (m) – 10)
NOTE: Refrigerant piping exceeding 7 m requires additional refrigerant charge according to the calculation.
Refrigerant piping length (one way)
Refrigerant piping length (one way)
Refrigerant piping length (one way)
Refrigerant piping length (one way)
20
PERFORMANCE CURVES8
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH
MUZ-GE50VA MUZ-GE50VAH MUZ-GE60VA MUZ-GE71VA
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.
(1) GUARANTEED VOLTAGE
198 ~ 264 V, 50 Hz
(2) AIR FLOW
Air flow should be set at MAX.
(3) MAIN READINGS
(1) Indoor intake air wet-bulb temperature: °C [WB]
(2) Indoor outlet air wet-bulb temperature: °C [WB]
(3) Outdoor intake air dry-bulb temperature: °C [DB]
(4) Total input: W
(5) Indoor intake air dry-bulb temperature: °C [DB]
(7) Total input: W
Indoor air wet/dry-bulb temperature difference on the left side of the following chart shows the difference between the
indoor intake air wet/dry-bulb temperature and the indoor outlet air wet/dry-bulb temperature for your reference at service.
How to measure the indoor air wet-bulb / dry-bulb temperature difference
1. Attach at least 2 sets of wet and dry-bulb thermometers to the indoor air intake as shown in the figure, and at least 2 sets
of wet and dry-bulb thermometers to the indoor air outlet. The thermometers must be attached to the position where air
speed is high.
2. Attach at least 2 sets of wet and dry-bulb thermometers to the outdoor air intake.
Cover the thermometers to prevent direct rays of the sun.
3. Check that the air filter is cleaned.
4. Open windows and doors of room.
5. Press the EMERGENCY OPERATION switch once (twice) to start the EMERGENCY COOL (HEAT) MODE.
6. When system stabilizes after more than 15 minutes, measure temperature and take an average temperature.
7. 10 minutes later, measure temperature again and check that the temperature does not change.
}
}
Cooling
Heating(6) Outdoor intake air wet-bulb temperature: °C [WB]
INDOOR UNIT OUTDOOR UNIT
Wet and dry-bulb
thermometers
FRONT VIEW
8-1. CAPACITY AND INPUT CURVES
8.4
7.7
7.1
6.5
5.9
5.3
4.7
10.4
9.5
8.7
8.0
7.2
6.5
5.7
10.2
9.4
8.6
7.9
7.1
6.4
5.7
9.3
8.6
7.9
7.2
6.5
5.8
5.2
6.6
6.1
5.6
5.1
4.6
difference (°C)
4.2
3.7
Indoor air Wet-bulb temperature
9.7
8.9
8.2
7.5
6.8
6.1
5.4
1.5
1.4
1.3
1.2
1.1
1.0
Capacity correction factors
0.9
-10-5 0 5 1015202530354045
Wet and dry-bulb
thermometers
BACK VIEW
Cooling capacity (
Outdoor intake air Dry-bulb temperature(°C)
at Rated frequency)
Indoor intake air Wet-bulb
temperature( )
26
24
22
20
18
MUZ-GE25VA
MUZ-GE25VAH
MUZ-GE35VA
MUZ-GE35VAH
MUZ-GE50VA
MUZ-GE42VA
MUZ-GE50VAH
MUZ-GE42VAH
MUZ-GE71VA
MUZ-GE60VA
21
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