[4] Simple parts check method
Part name
Thermistor (TH1) <Liquid
temperature detection>
Thermistor (TH2)
<Dischargetemperature
detection>
Thermistor (TH3) <Condenser/
evaporater temperature
detection>
Fan motor
Compressor
Thermal protector
trip temperature
150 ± 5 °C
Judgment instructions
Disconnect the connector and measure the resistance value with a multimeter.
(Ambient temperature 10 °C to 30 °C)
Measure the resistance value across the terminals with a multimeter. (Winding
temperature 20 C)
Measure the resistance value across the terminals with a multimeter. (Winding
temperature 20 °C)
Normal
4.3 kΩ~9.6 kΩ
160 kΩ~410 kΩ
Abnormal
Open or short
(Based on thermistor characteristic table (next page))
TH1, 3
TH2
White
Blue
Black
Normal
PUH-8MYF
Each phase 1.51 Ω
PUH-10MYF
Each phase 1.03 Ω
Abnormal
Open or short
PUH-7MYF
Each phase 1.66 Ω
Open or short
Open or short
Red
°
Normal
217 Ω
Abnormal
Open or short
Motor lead wire
PUH-7, 8MYF
Open or short
Between 2 phases
123 Ω
PUH-10MYF
Between 2 phases
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