Mitsubishi Electric PUMY-P100VHMB Service Manual page 65

9-7. HOW TO CHECK THE PARTS
PUMY-P100VHMB(-BS)
PUMY-P125VHMB(-BS)
PUMY-P140VHMB(-BS)
PUMY-P100YHMB(-BS)
PUMY-P125YHMB(-BS)
PUMY-P140YHMB(-BS)
Parts name
Thermistor (TH3)
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10 ~30 )
<Outdoor pipe>
Thermistor (TH4)
<Dischatge>
<Compressor>
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-P100VHMBR1(-BS)
PUMY-P125VHMBR1(-BS)
PUMY-P140VHMBR1(-BS)
PUMY-P100YHMBR1(-BS)
PUMY-P125YHMBR1(-BS)
PUMY-P140YHMBR1(-BS)
Normal
TH4 160k ~410k
TH3
TH6 4.3k ~9.6k
TH7
TH8 1 39k ~105k
Normal
1435 ± 150
Normal
0.330
Normal
1197 ± 10
Check points
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
65
PUMY-P100VHMBR2(-BS)
PUMY-P125VHMBR2(-BS)
PUMY-P140VHMBR2(-BS)
PUMY-P100YHMBR2(-BS)
PUMY-P125YHMBR2(-BS)
PUMY-P140YHMBR2(-BS)
1 TH8 is internal thermistor
of power module. (Y)