Service manual

32
11-5. Trouble criterion of main parts
Part name FigureCheck method and criterion
Outdoor fan motor(MF)
R.V. coil(21S4)
LEV(Expansion valve coil)
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
1.20 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
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 "
U-V
U-W
V-W
Normal
MUZ-FA35VA
MUZ-FA35VAH
0.41 " ~ 0.53 "
MUZ-FA25VA
MUZ-FA25VAH
1.28 " ~ 1.66 "
23
W
U
V
1
WHT
RED BLK
23
W
U
V
1
WHT
RED BLK
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
RED1
ORN4
YLW5
BRN2
BLU3
MUZ-FA25VA MUZ-FA35VA
MUZ-FA25VAH MUZ-FA35VAH
OB372D --2qxp 07.5.7 4:49 PM Page 32