Mitsubishi Electric PUHZ-FRP71VHA2 Service Manual page 45

10-6. HOW TO CHECK THE PARTS
PUHZ-FRP71VHA2
Parts name
Thermistor (TH3)
Disconnect the connector then measure the resistance with a tester.
<Liquid>
(At the ambient temperature 10 to 30°C)
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
TH4, TH33
<2-phase pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heatsink>
Thermistor (TH33)
<Comp. surface>
Fan motor (MF1) Refer to next page.
Solenoid valve coil Measure the resistance between the terminals with a tester.
(At the ambient temperature 20°C)
<4-way valve>
(21S4)
Solenoid valve coil
Measure the resistance between the terminals with a tester.
(SV1, SV2) (At the ambient temperature 20°C)
Solenoid valve coil
Measure the resistance between the terminals with a tester.
(SV3) (At the ambient temperature 20°C)
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)
(MC) U
V
W
Linear expansion valve
Disconnect the connector then measure the resistance with a tester.
(LEV-A/LEV-B/LEV-C) (Winding temperature 20°C)
Red
M
1
Brown
2
Blue
3
Orange
4
Yellow
5
White 6
OCH665B
Normal
160 to 410 kΩ
TH3
TH6
4.3 to 9.6 kΩ
TH7
TH8 39 to 105 kΩ
Normal
2350 ± 170"
Normal
1567 ± 150"
Normal
1450 ± 150"
Refer to "5-2. COMPRESSOR TECHNICAL DATA".
Red - White Red - Orange
Checkpoints
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Normal
Normal
Brown - Yellow
Brown - Blue
46 ± 4"
45
Abnormal
Open or short
Abnormal
Open or short