Mitsubishi PUMY-P100YHM Technical & Service Manual page 58

9-7. HOW TO CHECK THE PARTS
PUMY-P100YHM
PUMY-P125YHM
PUMY-P140YHM
Parts name
Thermistor (TH3)
Disconnect the connector then measure the resistance with a tester.
<Outdoor pipe>
(At the ambient temperature 10 ~30 )
Thermistor (TH4)
<Discharge>
Thermistor (TH6)
<Low pressure saturated
temperature>
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)
PUMY-P100YHM
1
PUMY-P125YHM
1
PUMY-P140YHM
1
Normal
TH4 160k ~410k
TH3
TH6 4.3k ~9.6k
TH7
TH8 1 39k ~105k
P100, P125,P140YHM
1370 ±100
P100, P125,P140YHM
(1)
0.302
Normal
1197±10
PUMY-P100YHMA
PUMY-P125YHMA
PUMY-P140YHMA
Check points
Abnormal
Open or short
Normal
P100,P125,P140YHM
1435 ±150
Normal
P100,P125,P140YHMA
0.330
Abnormal
Open or short
58
PUMY-P100YHMA-BS
PUMY-P125YHMA-BS
PUMY-P140YHMA-BS
1 TH8 is internal thermistor
of power module.
Abnormal
/YHMA
1
Open or short
Abnormal
Open or short