Mitsubishi Electric Mr.Slim MUZ-GC25NA - C1 Service Manual page 35

MUZ-GC50NA MUZ-GC60NA MUZ-GC71NA
Part name
Defrost thermistor (RT61)
Ambient temperature ther-
mistor (RT65)
Outdoor heat exchanger tem-
perature thermistor
(RT68)
Discharge temperature
thermistor
(RT62)
Fin temperature
thermistor (RT64)
Compressor (MC)
Outdoor fan motor (MF)
R. V. coil
Linear expansion valve
High pressure switch
(HPS)
-
GC60NA
C2
GC71NA
Check method and criterion
Measure the resistance with a tester.
Refer to 9-6. "Test point diagram and voltage", 1. "Inverter P.C.
board" or 2. "Outdoor electronic control 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 9-6. "Test point diagram and voltage", 1. "Inverter P.C.
board" or 2. "Outdoor electronic control P.C. board", the chart of
thermistor.
Measure the resistance between terminals using a tester.
(Winding temperature : -10 ~ 40°C)
GC50/60NA- GC50/60NA-
C1
0.40 ~ 0.49 Ω 0.86 ~ 1.06 Ω
Measure the resistance between lead wires using a tester.
(Part temperature : -10 ~ 40°C)
Color of lead wire
RED – BLK
BLK – WHT
WHT – RED
Measure the resistance using a tester.
(Part temperature : -10 ~ 40°C)
GC50NA- GC60NA-
C2
1.32 ~ 1.62 kΩ
Measure the resistance using a tester.
(Part temperature : -10 ~ 40°C)
Color of lead wire
WHT – RED
RED – ORN
YLW – BRN
BRN – BLU
Pressure (MPa)
3.7 ± 0.15
+0.05
4.8
-0.1
Normal
GC71
C2
1.29 ~ 1.49 Ω
Normal
13.4 ~ 16.4 Ω
Normal
Other models
C2
2.6 ~ 3.3 kΩ
Normal
37.4 ~ 53.9 Ω
Normal
Close
Open
35
Figure
W
RED
V
U
WHT
BLK
RED
U (W)
WHT
(V)
V
BLK
W (U)
WHT
RED LEV
ORN
YLW BRN BLU