Mitsubishi Electric MUZ-GA25VA, Service Manual

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11-5. Trouble criterion of main parts
Part name Figure Check method and criterion
Outdoor fan motor(MF)
INNER FUSE
(Only MUZ-GA25VA/H)
152
i
: CUT OFF
0
5
R.V. coil(21S4)
Expansion valve coil(LEV)
MUZ-GA35VA
MUZ-GA35VAH
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
WHT – BLK
BLK – RED
RED – WHT
Normal
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Normal
1.26 k " ~ 1.62 k " 1.20 k " ~ 1.55 k "
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Normal
38 " ~ 50 "
Measure the resistance with a tester.
(Part temperature : –20˚C ~ 40˚C)
Color of the lead wire
Color of the lead wire
292 " ~ 374 "
236
"
~ 304
"
31 " ~ 41 "
31
"
~ 41
"
31 " ~ 41 "
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Compressor(MC)
Defrost heater(H)
Measure the resistance with a tester.
(Part temperature -20˚C ~ 40˚C)
Normal
333
"
~ 428
"
Normal
1,220 " ~ 1,580 "
Measure the resistance with a tester.
(Part temperature -20˚C ~ 40˚C)
MUZ-GA25VA
MUZ-GA25VAH
U-V
U-W
V-W
Normal
1.28 " ~ 1.66 "
1.58 " ~ 2.03 "
MUZ-GA35VA
MUZ-GA35VAH
MUZ-GA25VA
MUZ-GA25VAH
MUZ-GA35VA
MUZ-GA35VAH MUZ-GA25VA
MUZ-GA25VAH
MUZ-GA35VA
MUZ-GA35VAH
MUZ-GA25VA
MUZ-GA25VAH
2 3
W
U
V
1
WHT RED BLK
2 3
W
U
V
1
WHT RED BLK
WHT RED BLK
FUSE
Solenoid valve coil
(21R1)
MUZ-GA25VA-
E1 / E2 /
E3 (Serial No. ~6021350T)
MUZ-GA25VAH-
E1 / E2 /
E3 (Serial No. ~7000000T)
MUZ-GA35VA
MUZ-GA35VAH
Measure the resistance with a tester.
Refer to 11-7. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Refer to 11-7. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Discharge temperature
thermistor (RT62)
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Defrost thermistor
(RT61)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
LEV
WHT
6
RED
1
ORN
4
YL
W
5
BRN
2
BLU
3
MUZ-GA25VA MUZ-GA35VA
MUZ-GA25VAH MUZ-GA35VAH
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