Mitsubishi Electric PUMY-P112VKM3 Technical & Service Manual page 111

8-7. HOW TO CHECK THE PARTS
PUMY-P112VKM3(-BS)
PUMY-P112YKM3(-BS)
PUMY-P112YKME3(-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 the 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
0.305 ± 0.015 "
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
OCH632A
PUMY-P125VKM3(-BS)
PUMY-P125YKM3(-BS)
PUMY-P125YKME3(-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
0.466 ± 0.023 "
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 "
111
PUMY-P140VKM3(-BS)
PUMY-P140YKM3(-BS)
PUMY-P140YKME3(-BS)
* TH8 is internal thermistor
of power module. (Y)
Abnormal
Open or short
Abnormal
Red - Blue
Open or short