Mitsubishi MUY-A15NA, Service Manual

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10-4. Trouble criterion of main parts
Part name Figure Check method and criterion
Outdoor fan motor (MF)
R.V. coil (21S4)
(MUZ)
Expansion valve coil (LEV)
Measure the resistance between the terminals with a tester.
(Part temperature 14
°
F ~ 104
°
F)
WHT – BLK
BLK – RED
RED – WHT
Normal
Measure the resistance between the terminals with a tester.
(Part temperature 14˚F ~ 104˚F)
Normal
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 : 14˚F ~ 104˚F)
Measure the resistance with a tester.
Refer to 10-6. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Refer to 10-6. "Test point diagram and voltage", 1. "Inverter P.C. board",
the chart of thermistor.
Color of the lead wire
Color of the lead wire
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) (MUZ)
Fin temperature
thermistor (RT64)
Ambient temperature
thermistor (RT65)
31 " ~ 41 "
31 " ~ 41 "
31 " ~ 41 "
Measure the resistance between the terminals with a tester.
(Part temperature 14
°
F ~ 104
°
F)
Compressor (MC)
U-V
U-W
V-W
Normal
0.39 " ~ 0.49 "
0.43 " ~ 0.53 "
MUZ-A15/17
MUY-A15/17
MUZ-A09/12
2 3
W
U
V
1
WHT
RED BLK
2 3
W
U
V
1
WHT RED BLK
LEV
WHT 6
RED 1
ORN 4
YL
W
5
BRN
2
BLU
3
MUZ-A09NA MUZ-A12NA MUZ-A15NA
MUZ-A17NA MUY-A15NA MUY-A17NA
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