Mitsubishi Electric MXZ-8A140VA1 Technical & Service Manual page 40

9-6. HOW TO CHECK THE PARTS
OUTDOOR UNIT : MXZ-8A140VA MXZ-8A140VA
Parts name
Disconnect the connector then measure the resistance with a tester.
Thermistor (TH3)
(At the ambient temperature 10 ~30 )
<Outdoor pipe>
Thermistor (TH4)
<Discharge>
Thermistor (TH7)
<Outdoor>
Thermistor (TH8)
<Heatsink>
Fan motor(MF1,MF2)
Refer to next page.
Solenoid valve coil Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 )
<Four-way valve>
(21S4)
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20 )
(MC)
U
V
W
Measure the resistance between the terminals with a tester.
Solenoid valve coil
(At the ambient temperature 20 )
<Bypass valve>
(SV1)
Measure the resistance between the terminals with a tester.
Solenoid valve coil
(At the ambient temperature 20 )
<Bypass valve>
(SV2)
Normal
TH4 160k ~ 410k
TH3
4.3k ~ 9.6k
TH7
TH8 39k ~ 105k
Normal
MXZ-8A140VA MXZ-8A140VA
(1)
1370 ± 100 1435 ± 150
Normal
0.188
Normal
1327 ± 10
Normal
MXZ-8A140VA MXZ-8A140VA
(1)
1197 ± 10
1450 ± 150
MXZ-8A140VA
1
Check points
Abnormal
Open or short
Abnormal
2, 3
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
2, 3
Open or short
40
MXZ-8A140VA
2 3