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Part name FigureCheck method and criterion
Defrost thermistor
(RT61)
Ambient temperature
thermistor (RT65)
Outdoor heat exchanger
temperature thermistor
(RT68)
Normal
2.6k" ~ 3.3k"
Normal
0.40" ~ 0.49"
Discharge temperature
thermistor (RT62)
Fin temperature
thermistor (RT64)
Measure the resistance between terminals using a tester.
(Winding temperature : -10°C ~ 40°C)
Compressor
W
U
V
WHT
RED
BLK
Measure the resistance between lead wires using a tester.
(Part temperature : -10°C ~ 40°C)
Outdoor fan motor
Measure the resistance using a tester. (Part temperature : -10°C ~ 40°C)
R. V. coil
Measure the resistance using a tester.(Part temperature : -10°C ~ 40°C)
Linear expansion valve
LEV
WHT
RED
YLW
BRN
ORN
BLU
Color of lead wire
Normal
WHT - RED
RED - ORN
YLW - BRN
BRN - BLU
37.4" ~ 53.9"
MUZ-GB50VA
U
RED
WHT
BLK
V
W
(W)
(V)
(U)
Normal
RED - BLK
BLK - WHT
WHT - RED
13.4" ~ 16.4"
Color of lead wire
Measure the resistance with a tester.
Refer to 10-7. “Test point diagram and voltage”,1. “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 10-7. “Test point diagram and voltage”,1. “Outdoor electronic
control P.C. board”, the chart of thermistor.
10-5. Trouble criterion of main parts
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