Mitsubishi MUH-GA50VB User Manual

27
10-3. TROUBLE CRITERION OF MAIN PARTS
MUH-GA50VB MUH-GA60VB MUH-GA80VB
Part name FigureCheck method and criterion
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Compressor
(MC)
INNER
PROTECTOR
160i 5: OPEN
90i10: CLOSE
Normal
MUH-GA50VB
Terminal
C – R
C – S
1.59 " ~ 1.95 "
2.65 " ~ 3.24 "
MUH-GA60VB
0.71 " ~ 0.87 "
1.45 " ~ 1.77 "
MUH-GA80VB
0.56 " ~ 0.71 "
1.43 " ~ 1.76 "
R.V. coil(21S4)
LEV(Expansion valve)
MUH-GA80VB
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Normal
2.673 k" ~ 3.268 k"
Color of lead wire
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Normal
41.0 " ~ 49.0 "
Measure the resistance with a tester.
(Part temperature : –10˚C ~ 40˚C)
Measure the resistance with a tester.
(Part temperature –10˚C ~ 40˚C)
Discharge temperature
thermistor(RT62)
MUH-GA80VB
Ambient temperature
thermistor(RT63)
MUH-GA80VB
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
(Part temperature 0˚C ~ 40˚C)
Measure the resistance with a tester.
(Part temperature –10˚C ~ 40˚C)
Defrost thermistor
(RT61)
w Reference value
MUH-GA50VB-
E1
MUH-GA60VB MUH-GA80VB
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Color of
lead wire
WHT – BLK
BLK – RED
BLK – YLW
YLW – RED
70.4 " ~ 85.5 "
73.6 " ~ 89.3 "
–
–
61.0 " ~ 74.0 "
82.5 " ~ 100.2 "
–
–
55.4 " ~ 67.7 "
–
49.3 " ~ 60.3 "
22.9 " ~ 28.0 "
Normal
MUH-GA50VB-
E2
63.1 " ~ 76.6 "
79.1 " ~ 96.1 "
–
–
Outdoor fan motor(MF)
MUH-GA50VB
MUH-GA60VB
INNER
PROTECTOR
130i 5: OPEN
( 83i15: CLOSE
w
)
MUH-GA80VB
INNER
PROTECTOR
135i 5: OPEN
( 83i15: CLOSE
w
)
Refer to 10-5. "Test point diagram and voltage", "Outdoor deicer P.C. board",
the chart of thermistor.
Refer to 10-5. "Test point diagram and voltage", "Outdoor deicer P.C. board",
the chart of thermistor.
Refer to 10-5. "Test point diagram and voltage", "Outdoor deicer P.C. board",
the chart of thermistor.
REDORN WHT
YLW
BLK
MAIN
AUX.1AUX.2
C
P
P
~
BLK
R
MAIN
AUX.
RED
S
C
WHT
MAIN
AUX.
BLK
MUH-GA50VB
MUH-GA60VB
MUH-GA80VB
RED
WHTORN
P
LEV
WHT
6
RED1
ORN4
YLW5
BRN2
BLU3
:INNER PROTECTOR
P
OB368B-1.qxp 10.5.25 9:14 AM Page 27

Mitsubishi MUH-GA50VB Specifications

General

Brand	Mitsubishi
Model	MUH-GA50VB
Category	Air Conditioner
Language	English