Mitsubishi Electric MUZ-GC25VA-E1 Service Manual page 28

11-4. Trouble criterion of main parts
MUZ-GC25VA
MUZ-GC25VAH
Part name
Defrost thermistor
(RT61)
Ambient temperature
thermistor (RT65)
Discharge temperature
thermistor (RT62)
Fin temperature
thermistor (RT64)
Compressor (MC)
Outdoor fan motor (MF)
INNER FUSE
(Only MUZ-GC25)
RA6V21-AB
+0
152 : CUT OFF
-5
RA6V21-BB
126i2 : CUT OFF
R.V. coil (21S4)
Expansion valve coil (LEV)
Defrost heater (H)
MUZ-GC35VA
MUZ-GC35VAH
Check method and criterion
Measure the resistance with a tester.
Refer to 11-7. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Measure the resistance with a tester.
Before measurement, hold the thermistor with your hands to warm it up.
Refer to 11-7. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
MUZ-GC25
U-V
U-W
1.58 " ~ 2.03"
V-W
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Color of the lead wire
RA6V21-AB
292 " ~ 374 "
WHT – BLK
BLK – RED
236 " ~ 304 "
RED – WHT
Measure the resistance between the terminals with a tester.
(Part temperature –20˚C ~ 40˚C)
Normal
MUZ-GC25
1.26 k" ~ 1.62 k"
Measure the resistance with a tester.
(Part temperature –20˚C ~ 40˚C)
Color of the lead wire
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Measure the resistance with a tester.
(Part temperature –20˚C ~ 40˚C)
Normal
MUZ-GC25
313 " ~ 402 "
Normal
MUZ-GC35
1.43 " ~ 1.84 "
Normal
MUZ-GC25
RA6V21-BB
212 " ~ 272 "
234 " ~ 300 "
MUZ-GC35
1.21 k" ~ 1.56 k"
Normal
38 " ~ 50 "
MUZ-GC35
333 " ~ 428 "
28
MUZ-GC25
MUZ-GC35
FUSE
31 " ~ 41 "
31 " ~ 41 "
BLK RED
31 " ~ 41 "
Figure
WHT
RED BLK
2 3
1
W
V
U
MUZ-GC35
WHT RED BLK
2 3 1
W
V
U
WHT
WHT6
LEV
RED1
ORN4