How To Check The Parts - Mitsubishi Electric PUZ-WM50VHA Service Manual

9-4. HOW TO CHECK THE PARTS

PUZ-WM50VHA.UK
PUZ-WM50VHA-BS.UK
PUZ-WM85YAA.UK
PUZ-WM85YAA-BS.UK
Parts name
Thermistor (TH3)
<Liquid>
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<Two-phase pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
Thermistor (TH33)
<Comp. surface>
Thermistor (TH34)
<Plate hex liquid>
Fan motor
(MF1)
Solenoid valve coil
<4-way valve>
(21S4)
Motor for compressor
(MC)
U
V
W
Linear expansion valve
(LEV-A/LEV-B)
GY
M 1
OG
2
RD
3
YE
4
BK
5
OCH727
PUZ-WM60VAA.UK
PUZ-WM60VAA-BS.UK
PUZ-WM112VAA.UK
PUZ-WM112VAA-BS.UK
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10 to 30:)
Normal
TH4
160 to 410 k"
TH33
TH3
TH6
4.3 to 9.6 k"
TH7
TH34
39 to 105 k"
TH8
Refer to the next page.
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Normal
WM50
1725 i 173 "
Measure the resistance between the terminals with a tester.
(Winding temperature 20:)
WM50VHA WM60VAA
0.98 Ω 0.95 Ω
Disconnect the connector then measure the resistance with a tester.
(Winding temperature 20:)
Gray - Black Gray - Red
PUZ-WM85VAA.UK
PUZ-WM85VAA-BS.UK
PUZ-WM112YAA.UK
PUZ-WM112YAA-BS.UK
Check points
Abnormal
Open or short
WM60-112
Open or short
1435 i 150 "
WM85VAA WM85YAA
0.95 Ω 1.65 Ω
Normal
Gray - Yellow
46 ± 3"
38
Abnormal
WM112VAA WM112YAA
0.74 Ω 0.94 Ω Open or short
Abnormal
Gray - Orange
Open or short
Abnormal