54
OCH670
1
2
3
4
5
M
Gray
Orange
Red
Yellow
Black
Parts name
Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10°C to 30°C)
Thermistor(TH3)
<Liquid>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<2-phase pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heatsink>
Thermistor (TH33)
<Comp. surface>
Normal
160 k
Ω
–410 k
Ω
TH4, TH33
Abnormal
Motor for compressor
(MC)
Linear expansion valve
(LEV-A/LEV-B)
Abnormal
Open or short
Refer to “4-2. COMPRESSOR TECHNICAL DATA”.
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20°C)
Normal
Gray–Black
Gray–Red
Gray–Yellow
Gray–Orange
Abnormal
46 ± 3
Ω
Open or short
Refer to the next page.
Fan motor(MF1,MF2)
Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)
Normal
W
V
U
39 k
Ω
–105k
Ω
4.3 k
Ω
–9.6 k
Ω
Open or short
TH3
TH6
TH7
TH8
Measure the resistance between the terminals with a tester.
(At the ambient temperature
−
10°C to 40°C)
Solenoid valve coil
<4-way valve>
(21S4)
Normal
Abnormal
Open or short
1190 to 1780 Ω
9-6. HOW TO CHECK THE PARTS
PUHZ-P100VKA.TH(-ET/-ER) PUHZ-P100YKA.TH(-ET/-ER)
PUHZ-P125VKA.TH(-ET/-ER) PUHZ-P125YKA.TH(-ET/-ER)
PUHZ-P140VKA.TH(-ET/-ER) PUHZ-P140YKA.TH(-ET/-ER)