Mitsubishi Electric PUZ-ZM60VHA2, Service Manual

Page: 61 / 140

61
OCH771
10-5. HOW TO CHECK THE PARTS
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 10 to 30°C)
Thermistor (TH3)
<Liquid>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<2-phase pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
Thermistor (TH33)
<Comp. Surface>
Normal
160 to 410 k Ω TH4, TH33
TH3
TH6
TH7
TH8
Abnormal
Open or short
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20°C)
Solenoid valve coil
<4-way valve>
(21S4)
Motor for compressor
(MC)
Linear expansion valve
(LEV-A/LEV-B)
Normal
Abnormal
Open or short
Abnormal
Open or short Refer to “5-2. COMPRESSOR TECHNICAL DATA”.
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20°C)
Normal
Red - White Red - Orange
Red - Yellow
Red - Blue
Abnormal
46 ± 4 Ω
Open or short
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
ZM100–140 ZM200/250 ZM60/71
1435 ± 150 Ω 1215 ± 122 Ω 2350 ± 170 Ω
ZM60/71
ZM100-250
4.3 to 9.6 k Ω
39 to 105 k Ω