Mitsubishi Electric Mr. SLIM MSZ-FA25VA Technical Manual página 280

Resolución de averías
11-4. Trouble criterion of main parts
MUZ-HC25VA
Part name
Defrost thermistor
(RT61)
Discharge temperature
thermistor (RT62)
Fin temperature
thermistor (RT64)
Compressor(MC)
Outdoor fan motor(MF)
INNER FUSE
RA6V21-AB
+0
152 CUT OFF
°C
-5
RA6V21-BB
+
126i 2 CUT OFF
°C
-
R.V. coil(21S4)
280
MUZ-HC35VA MUZ-HC35VAB
Measure the resistance with a tester.
Refer to 11-6. "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 11-6. "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 –10˚C ~ 40˚C)
MUZ-HC25
U-V
U-W
1.65 ~ 2.03
V-W
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Color of the
lead wire
RA6V21-AB
WHT – BLK 305 ~ 374
BLK – RED 247 ~ 304
Measure the resistance between the terminals with a tester.
(Part temperature –10˚C ~ 40˚C)
Normal
1.32 k ~ 1.62 k
Check method and criterion
Normal
MUZ-HC35
1.49 ~ 1.84
Normal
RA6V21-BB
222 ~ 272
245 ~ 300
Figure
WHT
RED BLK
2 3
1
W
V
U
FUSE
BLK
RED WHT