62
OCH439M
1
2
3
4
5
6
M
Gray
Orange
Red
Yellow
Black
1
2
3
4
5
M
Gray
Orange
Red
Yellow
Black
Parts name
Checkpoints
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature of 10 to 30°C)
TH3: Liquid pipe temp.
TH4: Discharge temp.
TH6: Plate Hex liquid pipe temp.
TH7: Ambient temp.
TH8: Heat sink temp.
TH32: Inlet water temp.
TH33: Comp. surface thermistor
(W50VHA(R1–R3), W85VHAR1)
Suction pipe temp. (HW112,140)
TH34: Comp. surface thermistor
(HW
•
HA2R3–R7)
Normal
160 to 410 kΩ
4.3 to 9.6 kΩ
4.4 to 9.8 kΩ
39 to 105 kΩ
TH4
TH33 (W50VHA(R1,R2,R3), W85VHAR1)
TH34 (HW
•
HA2R3–R7)
TH3
TH6
TH7
TH33 (HW112,140)
TH32
TH8
Abnormal
Open or short
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20°C)
Solenoid valve coil
<4-way valve>
(21S4)
Compressor
(MC)
Normal
Abnormal
Open or short
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20°C)
Normal
1450 ± 150 Ω
Abnormal
Open or short
Solenoid valve coil
<Bypass valve>
(SV) W50VHA
Refer to the next page.
Fan motor (MF1)
W50,85
2350 ± 170 Ω
HW112,140
1435 ± 150 Ω
0.865 to 0.895 Ω
0.302 Ω
HW112,140Y(2)
HW140V(2)
W85
W50
0.188 Ω
Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)
Normal
Abnormal
Open or short
W
V
U
Linear expansion valve
(LEV-A) (LEV-B) (LEV-C)
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
0.640 Ω
<HW•HA2R3–R7 models>
<except HW•HA2R3–R7 models>
W85VHA
9-4. HOW TO CHECK THE PARTS
PUHZ-W50VHA(-BS) PUHZ-W85VHA(-BS) PUHZ-HW112YHA(-BS)
PUHZ-HW140VHA(-BS)
PUHZ-HW140YHA(-BS)
PUHZ-W50VHAR1(-BS) PUHZ-W85VHAR1(-BS) PUHZ-HW112YHA2(-BS)
PUHZ-HW140VHA2(-BS)
PUHZ-HW140YHA2(-BS)
PUHZ-W50VHAR2(-BS)
PUHZ-HW112YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS) PUHZ-HW140YHA2R1(-BS)
PUHZ-W50VHAR3(-BS)
PUHZ-HW112YHA2R3(-BS) PUHZ-HW140VHA2R2-BS PUHZ-HW140YHA2R3(-BS)
PUHZ-HW112YHA2R4(-BS) PUHZ-HW140VHA2R3(-BS) PUHZ-HW140YHA2R4(-BS)
PUHZ-HW112YHA2R5(-BS) PUHZ-HW140VHA2R4(-BS) PUHZ-HW140YHA2R5(-BS)
PUHZ-HW112YHA2R6(-BS) PUHZ-HW140VHA2R5(-BS) PUHZ-HW140YHA2R6(-BS)
PUHZ-HW112YHA2R7(-BS) PUHZ-HW140VHA2R6(-BS) PUHZ-HW140YHA2R7(-BS)
PUHZ-HW140VHA2R7(-BS)