Mitsubishi Electric PUZ-HWM140VHA Service Manual page 34

9-5. HOW TO CHECK THE PARTS
PUZ-HWM140VHA(-BS)
Parts name
TH3: Liquid pipe temp.
TH4: Discharge temp.
TH6: 2-phase pipe temp.
TH7: Ambient temp.
TH8: Heat sink temp.
TH32: Suction pipe temp.
TH34: Plate Hex liquid pipe temp.
Fan motor (MF1)
Solenoid valve coil
<4-way valve>
(21S4)
Compressor
(MC)
U
V
W
Linear expansion valve
(LEV-A) (LEV-B) (LEV-C)
Gray
M
Orange
Red
Yellow
Black
OCH748
PUZ-HWM140YHA(-BS)
Disconnect the connector then measure the resistance with a multimeter.
(At the ambient temperature of 10 to 30°C)
TH4
TH33
TH3
TH6
TH7
TH34
TH8
Refer to the next page.
Measure the resistance between the terminals with a multimeter.
(At the ambient temperature of 20°C)
1725 ± 172.5 Ω
Measure the resistance between the terminals with a multimeter.
(Winding temperature 20°C)
HWM140V
0.188 Ω
Disconnect the connector then measure the resistance with a multimeter.
(Winding temperature 20°C)
1
2
Gray - Black
3
4
5
Checkpoints
Normal
160 to 410 kΩ
4.3 to 9.6 kΩ
39 to 105 kΩ
Normal
Normal
HWM140Y
0.302 Ω
Normal
Gray - Yellow Gray - Orange
Gray - Red
46 ± 3 Ω
34
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short