How To Check The Parts - Mitsubishi Electric PUMY-P112VKM1 Service Manual

8-7. HOW TO CHECK THE PARTS

PUMY-P112VKM1(-BS)
PUMY-P125VKM1(-BS)
PUMY-P140VKM1(-BS)
Parts name
Thermistor (TH2)
Disconnect the connector then measure the resistance with a tester.
<HIC pipe>
(At the ambient temperature 10 to 30 :)
Thermistor (TH3)
<Outdoor liquid pipe>
Thermistor (TH4)
<Compressor>
Thermistor (TH6)
<Suction pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
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 :)
<4-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)
Linear expansion Valve
(LEV A)
Gray
M
1
Orange
2
Red
3
Yellow
4
Black 5
Linear expansion Valve
(LEV B)
Red
M 1
Blue
2
Orange
3
Yellow
4
White
5
OCH576
PUMY-P112YKM1(-BS)
PUMY-P125YKM1(-BS)
PUMY-P140YKM1(-BS)
Normal
TH4 160 to 410 k"
TH2
TH3
4.3 to 9.6 k"
TH6
TH7
TH8*
39 to 105 k"
Normal
1725 ± 172.5 "
Normal
PUMY-P•VKM PUMY-P•YKM
0.305 " 0.466 "
Normal
1182.5 ± 83 "
Gray - Black Gray - Red
Red - White Red - Orange
Check points
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Normal
Gray - Yellow Gray - Orange
46 ± 3 "
Normal
Red - Yellow
46 ± 4 "
115
* TH8 is internal thermistor
of power module. (Y)
Abnormal
Open or short
Abnormal
Red - Blue
Open or short