Mitsubishi Electric MU-GA50VB User manual

CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················3
3. SPECIFICATION·················································3
4. NOISE CRITERIA CURVES·······························5
5. OUTLINES AND DIMENSIONS ·························6
6. WIRING DIAGRAM ············································7
7. REFRIGERANT SYSTEM DIAGRAM················9
8. PERFORMANCE CURVES······························12
9.TROUBLESHOOTING·······································20
10. DISASSEMBLY INSTRUCTIONS·····················28
11. PARTS LIST······················································32
12. RoHS PARTS LIST···········································34
MU-GA50VB -
MU-GA60VB -
MU-GA80VB - A1
A1
A1
SPLIT-TYPE, AIR CONDITIONERS
MU-GA50VB
NOTE:
• This service manual describes technical data of outdoor units.
• RoHS compliant products have <G> mark on the spec name plate.
For servicing of RoHS compliant products, refer to the RoHS Parts List.
No. OB464
OUTDOOR UNIT
SERVICE MANUAL
Wireless type
Models
HFC
utilized
R410A
Indoor unit service manual
MS-GA·VB (OB463)
OB464-1.qxp 06.7.11 4:23 PM Page 1

TECHNICAL CHANGES
2
1
MU-A18WV - ➔MU-GA50VB -
1. Model name has been changed.
Indication of capacity has been changed. (BTU➔ kW)
2. Valve cover has been added.
3. Fan motor has been changed. (RA6V50-OG➔RA6V60-MA)
MU-A24WV - ➔MU-GA60VB -
1. Model name has been changed.
Indication of capacity has been changed. (BTU➔ kW)
2. Compressor has been changed. (NN29VBAHT➔NN25VBAHT)
3. Capillary tubes have been changed to LEV.
4. Fan speed regulator has been changed. (1 speed ➔2 speed)
5. Outdoor fan motor has been changed. (RA6V60-MA ➔RA6V75-AD)
6. Ambient temperature thermistor has been added.
7. Outdoor unit size has been changed. (W 850 mm x H 605 mm x D 290 mm ➔ W 840 mm x H 850 mm x D 330 mm)
MU-A30WV - ➔MU-GA80VB -
1. Model name has been changed.
Indication of capacity has been changed. (BTU➔ kW)
2. Compressor has been changed. (NN37VAAHT➔NN33VACHT)
A1A1
A1A1
A1A1
OB464-1.qxp 06.7.11 4:23 PM Page 2

3
PART NAMES AND FUNCTIONS
2
Drainage hose
Piping
Air inlet Air inlet
Air outlet
Drain outlet
(back and side)
Air outlet
(back and side)
OUTDOOR UNIT
MU-GA50VB MU-GA60VB
MU-GA80VB
SPECIFICATION
3
Outdoor model
Function
Power supply
Capacity
Dehumidification
Air flow(High/ Low)
Power outlet
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Maximum current
Model
Output
Winding
resistance(at 20:)
Model
Winding
resistance(at 20:)
Dimensions WOHOD
Weight
Sound level(High)
Fan speed(High)
Fan speed regulator
Refrigerant filling
capacity(R410A)
Refrigeration oil (Model)
kW
L/h
K/h
A
A
W
%
A
A
A
A
W
"
"
mm
kg
dB
rpm
kg
L
MU-GA50VB
Cooling
Single phase
230V, 50Hz
5.1
1.4
2,322/ –
15
7.69
1,681
95
37
7.14
0.55
11.5
2.91
RN196VHSHT
1,300
C-R 1.80
C-S 3.00
RA6V60-MA
WHT-BLK 71
BLK-RED 89
850o605o290
45
52
873
1
1.60
0.52(NEO22)
MU-GA60VB
Cooling
Single phase
230V, 50Hz
6.5
2.3
2,940/1,470
25
10.09
2,251
97
45 or less
9.52
0.57
15.0
2.80
NN25VBAHT
1,600
C-R 0.89
C-S 2.03
RA6V75-AD
WHT-BLK 62.8 BLK-YLW 55.9
YLW-RED 26.0
840o850o330
73
55/53
805/435
2
2.40
1.20(NEO22)
Electrical data
Compressor
Fan motor
Special remarks
Coefficient of performance(C.O.P)
Capacity
NOTE: Test conditions are based on AZ/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
Indoor-Outdoor piping length : 7.5m
OB464-1.qxp 06.7.11 4:23 PM Page 3

4
Outdoor model
Function
Power supply
Capacity
Dehumidification
Air flow(High/Low)
Power outlet
Running current
Power input
Power factor
Starting current
Compressor motor current
Fan motor current
Maximum current
Model
Output
Winding
resistance(at 20:)
Model
Winding
resistance(at 20:)
Dimensions WOHOD
Weight
Sound level(High/Low)
Fan speed(High/Low)
Fan speed regulator
Refrigerant filling
capacity(R410A)
Refrigeration oil (Model)

kW
L/h
K/h
A
A
W
%
A
A
A
A
W
"


"
mm
kg
dB
rpm
kg
L
MU-GA80VB
Cooling
Single phase
230V, 50Hz
7.8
3.5
2,940/1,470
25
12.91
2,881
97
45 or less
12.34
0.57
20.0
2.64
NN33VACHT
2,200
C-R 0.68
C-S 1.80
RA6V75-AD
WHT-BLK 62.8 BLK-YLW 55.9
YLW-RED 26.0
840o850o330
75
55/53
805/435
2
2.40
1.30(NEO 22)
Electrical data
Compressor
Fan motor
Special remarks
Coefficient of performance(C.O.P)
Capacity
NOTE: Test conditions are based on AZ/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
Indoor-Outdoor piping length : 7.5m
OB464-1.qxp 06.7.11 4:23 PM Page 4

5
NOISE CRITERIA CURVES
4
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
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
52
SPL(dB(A)) LINE
High
FAN SPEED
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB=20µPa
MU-GA50VB
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
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
55
SPL(dB(A)) LINE
High
FAN SPEED
OCTAVE BAND SOUND PRESSURE LEVEL, 0dB=20µPa
MU-GA60VB MU-GA80VB
OUTDOOR UNIT
MICROPHONE
1m
OB464-1.qxp 06.7.11 4:23 PM Page 5