Mitsubishi MUZ-GE25VA User manual

SERVICE MANUAL
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············· 15
8. PERFORMANCE CURVES····························· 17
9. ACTUATOR CONTROL··································· 31
10. SERVICE FUNCTIONS···································· 32
11. TROUBLESHOOTING····································· 32
12. DISASSEMBLY INSTRUCTIONS···················· 50
Models
SPLIT-TYPE AIR CONDITIONERS
MUZ-GE25VA - E1
MUZ-GE25VAH - E1
MUZ-GE35VA - E1
MUZ-GE35VAH - E1
MUZ-GE42VA - E1
MUZ-GE42VAH - E1
MUZ-GE50VA - E1
MUZ-GE50VAH - E1
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
HFC
utilized
R410A
No. OBH516
REVISED EDITION-A
OUTDOOR UNIT
Indoor unit service manual
MSZ-GE•VA Series (OBH515)
MSZ-CGE•VA Series (OBH523)
PARTS CATALOG (OBB516)
MUZ-GE25/35/42VA
Revision A:
• MUZ-GE42/50VA(H) - E1 has been added.
Please void OBH516.

2
Revision A:
• MUZ-GE42/50VA(H) - E1 has been added.

3
MUZ-GE25VA - E1 MUZ-GE25VAH - E1
MUZ-GE35VA - E1 MUZ-GE35VAH - E1
MUZ-GE42VA - E1 MUZ-GE42VAH - E1
MUZ-GE50VA - E1 MUZ-GE50VAH - E1
1. New model
TECHNICAL CHANGES
1

4
Air outlet
Drain outlet
Piping
Drain hose
Air inlet
(back and side)
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH
MUZ-GE42VA MUZ-GE42VAH
MUZ-GE50VA MUZ-GE50VAH
Piping
Air outlet
Air inlet
(back and side)
Drain hose
Drain outlet
(GE50VA)
PART NAMES AND FUNCTIONS
2
ACCESSORIES
MUZ-GE25/35/42VA MUZ-GE50VA
Drain socket 1 1
Drain cap - 2

5
Outdoor model MUZ-GE25VA
MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH MUZ-GE42VA MUZ-GE42VAH MUZ-GE50VA MUZ-GE50VAH
Power supply Single phase, 230 V, 50 Hz
Capacity
Rated frequency (Min.-Max.)
Cooling kW 2.5 (1.1 - 3.5) 3.5 (1.1 - 4.0) 4.2 (0.9 - 4.8) 5.0 (1.4 - 5.5)
Heating 3.2 (1.3 - 4.5) 4.0 (1.6 - 5.3) 5.4 (1.4 - 6.0) 5.8 (1.4 - 7.3)
Breaker Capacity A 10 16
Electrical data
Power input 1 (Total) Cooling W545 865 1,215 1,515
Heating 700 955 1,460 1,565
Running current 1
(Total)
Cooling A2.9 4.2 5.6 6.8
Heating 3.7 4.6 6.6 7.0
Power factor 1 (Total) Cooling %82 90 94 96
Heating 82 90 96 97
Starting current 1 (Total) A 3.7 4.6 6.6 7.0
Coefficient of performance
(COP) 1 (Total)
Cooling 4.59 4.05 3.46 3.30
Heating 4.57 4.19 3.70 3.71
Compressor
Model KNB073FFDHC KNB092FFAHC SNB130FGBHT
Output W 550 650 900
Current 1 Cooling A2.44 3.56 4.99 6.09
Heating 3.20 4.06 5.98 6.32
Refrigeration oil (Model) cc 320 (NEO22) 450 (NEO22)
Fan motor
Model RC0J50-DB RC0J50-EA RC0J60-AA
Current 1Cooling A0.24 0.35 0.32 0.32
Heating 0.27 0.31 0.31
Dimensions W × H × D mm 800 × 550 × 285 840 × 850 × 330
Weight kg 30 33 36 54
Special remarks
Dehumidification Cooling /h 0.2 0.9 1.4 1.8
Air flow 1
Cooling Med.
m3/h
1,806 1,872 1,872 2,940
Low 1,170 1,776 1,086 1,740
Heating
High 2,106 2,016 2,016 –
Med. 1,806 1,776 1,776 2,940
Low 1,452 1,386 1,386 2,142
Sound level 1 Cooling dB(A) 47 50 54
Heating 48 51 56
Fan speed
Cooling Med.
rpm
740 810 810 780
Low 490 770 490 480
Heating
High 860 870 870 –
Med. 740 770 770 780
Low 600 610 610 580
Fan speed regulator 3 2
Refrigerant filling capacity (R410A) kg 0.80 1.15 1.55
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.
SPECIFICATION
3

6
Specifications and rating conditions of main electric parts
Model
Item MUZ- GE25VA MUZ- GE25VAH MUZ- GE35VA MUZ- GE35VAH MUZ- GE42VA MUZ- GE42VAH MUZ- GE50VA MUZ- GE50VAH
Current
transformer
(CT) 20 A
(CT761, CT781) 15 A
Smoothing
capacitor (C61, C62, C63) 620 μF 420 V
Diode module (DB61) 15 A 600 V 25 A 600 V
(DB65) 25 A 600 V
Fuse
(F61) T20AL250V
(F701, F801,
F901) T3.15AL250V
Defrost heater (H) — 230 V
130 W —230 V 130 W —230 V 130 W —230 V 120 W
Intelligent power
module (IPM) 15 A 600 V 20 A 600 V
Expansion valve
coil (LEV) DC 12 V
Reactor (L61) 18 mH 23 mH
Current-
detecting
resistor
(R61) 45 mΩ5 W
(1 element)
100 mΩ5 W
(2 elements) —
(R61,R62) — 180 mΩ5 W
(2 elements)
(R825) 25 mΩ5 W
(R937, R938,
R939) 430 mΩ2 W —
(R937A,R937B) — 1.1 Ω2 W
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
(X66) — 3 A 250 V — 3 A 250 V — 3 A 250 V — 3 A 250 V
R.V.coil (21S4) AC 220 - 240 V
Heater protector (26H) — Open 45°C — Open 45°C — Open 45°C — Open 45°C
IGBT (TR821) 30 A 600 V

7
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
47
48
NC-10
MUZ-GE25VA MUZ-GE25VAH
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
47
48
NC-10
MUZ-GE35VA MUZ-GE35VAH
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
50
NC-10
51
MUZ-GE42VA MUZ-GE42VAH
90
80
70
60
50
40
30
20
10 63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION SPL(dB(A)) LINE
HEATING
54
NC-10
56
MUZ-GE50VA MUZ-GE50VAH
NOISE CRITERIA CURVES
4
Test conditions
Cooling : Dry-bulb temperature 35 °C
Heating : Dry-bulb temperature 7 °C Wet-bulb temperature 6 °C
OUTDOOR UNIT
MICROPHONE
1 m

8
Unit: mm
MUZ-GE25VA MUZ-GE25VAH MUZ-GE35VA MUZ-GE35VAH
MUZ-GE42VA MUZ-GE42VAH
10
69
800
302.5
500 Bolt pitch for installation
150
22.3
Handle
550
280
164.5
99.5
170.5
23 Service panel
Service port
285
344.5
44
400
Air in
Air out
Air in
17.5
Bolt pitch for
installation
304~325
40
Liquid refrigerant pipe joint
Refrigerant pipe (flared) ø6.35
Gas refrigerant pipe joint
Refrigerant pipe (flared) ø9.52
43
35
2 holes 10 X 21
REQUIRED SPACE Basically open 100 mm or more
without any obstruction in front
and on both sides of the unit.
350 mm or more
200 mm or more
100 mm or more
100 mm or more
Open two sides of left,
right, or rear side.
Drain hole ø42 (25/35/42VA)
Drain hole ø33 (25/35/42VAH)
MUZ-GE50VA MUZ-GE50VAH
OUTLINES AND DIMENSIONS
5
30°
35°
155
90
198
40
515
299
66
34
51
330
360
850
430
500 80
121
840
Service panel
Gas refrigerant
pipe joint
Refrigerant pipe
(flared) ø12.7
Liquid refrigerant
pipe joint
Refrigerant pipe
(flared) ø6.35
170
Open as a rule
500 mm or more if
the front and both
sides are open
100 mm or more
200 mm or more if
there are obstacles
to both sides
Open as a rule
500 mm or more if the back,
both sides and top are open
350 mm or more
100 mm or more
REQUIRED SPACE
Air in
Air out
Air in
4 holes 10 × 21
Drain holes ø33(50VA)

9
MUZ-GE25VA MUZ-GE35VA
WIRING DIAGRAM
6

10
MUZ-GE25VAH MUZ-GE35VAH