Parts name Check points
Disconnect the connector then measure the resistance using a tester.
(Surrounding temperature 50°F~86°F)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
FAN MOTOR(MF,1,2,3,4)
4-WAY VALVE
SOLENOID COIL
(21S4)
OUTDOOR COIL
THERMISTOR (RT)
Normal
4.3k"~9.6k"
Abnormal
Open or short
Normal
PUH18 PUH24
PUH30,36
PUH42
Motor terminal
or
Relay connector
Abnormal
77.3"
134.6"
100.2"
83.8"
73.9"
118.7"
61.5"
79.8"
Open or short
Normal
PUH18,36,42 PUH24,30
Abnormal
1440" 1190"
Open or short
Measure the resistance between the terminals using a tester.
(Surrounding temperature 68°F)
BYPASS VALVE
SOLENOID COIL
(21R)
Normal
PUH18,24 PUH30,36,42
Abnormal
1500" 1197"
Open or short
Measure the resistance between the terminals using a tester.
CRANKCASE
HEATER (HC)
Normal
PUH18
PUH24,30,36,42
Abnormal
1920" 1340"
Open or short
White — Blue
Blue — Red (Brown)
[PUH30,36,42]
Protector
[PUH18,24]
Red(Brown)
Blue
White
Orange(Yellow)
Red(Brown)
Blue
White
Orange(Yellow)
Protector
Protector
OPEN : 275±9˚F
CLOSE : 187±27˚F
5. HOW TO CHECK THE PARTS
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