Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 143

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
126i 2 :
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 1.21 k ~ 1.56 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
MUZ-GC35
RA6V21-BB
212 ~ 272 31 ~ 41
31 ~ 41
234 ~ 300
31 ~ 41
MUZ-GC35
Normal
38 ~ 50
MUZ-GC35
333 ~ 428
28
Resolución de averías
Figure
WHT RED BLK
2 3
W
V
U
MUZ-GC25
MUZ-GC35
WHT RED BLK
2
FUSE
V
BLK RED WHT
WHT 6
RED 1
LEV
ORN 4
1
3 1
W
U
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