Mitsubishi Electric City Multi PUMY-SP112VKM Technical & Service Manual page 106

8-5. HOW TO CHECK THE PARTS
PUMY-SP112VKM(R1).TH
PUMY-SP112YKM(R1).TH
PUMY-SP112VKM(R1).TH-BS PUMY-SP125VKM(R1).TH-BS PUMY-SP140VKM(R1).TH-BS
PUMY-SP112YKM(R1).TH-BS PUMY-SP125YKM(R1).TH-BS PUMY-SP140YKM(R1).TH-BS
Parts name
Thermistor (TH2)
Disconnect the connector then measure the resistance with a tester.
<HIC pipe>
(At the ambient temperature 10 to 30°C)
Thermistor (TH3)
<Outdoor liquid pipe>
Thermistor (TH4)
<Compressor>
Thermistor (TH6)
<Suction pipe>
Thermistor (TH7)
<Ambient>
Thermistor (TH8)
<Heat sink>
Fan motor (MF1)
Measure the resistance between the connector pins with a tester.
(At the ambient temperature 20°C)
Red
1
2
3
M
Blue
4
Brown
5
Orange
6
White
1.1 ± 0.05 M"
7
Solenoid valve coil Measure the resistance between the terminals with a tester.
(At the ambient temperature 20°C)
<4-way valve>
(21S4)
Motor for compressor Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)
(MC)
U
PUMY-SP•VKM
V
W
Solenoid valve coil
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20°C)
<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
OCH668B
PUMY-SP125VKM(R1).TH
PUMY-SP125YKM(R1).TH
Normal
TH4 160 to 410 k"
TH2
TH3
4.3 to 9.6 k"
TH6
TH7
TH8*
39 to 105 k"
Red - Blue Brown - Blue
40 ± 4 k"
Normal
1725 ± 172.5 "
Normal
PUMY-SP•YKM
0.015 " 0.466 "
Normal
1182.5 ± 83 "
Gray - Black Gray - Red
Red - White Red - Orange
PUMY-SP140VKM(R1).TH
PUMY-SP140YKM(R1).TH
Check points
Abnormal
Open or short
Normal
Orange - Blue White - Blue
220 ± 22 k"
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Normal
Gray - Yellow Gray - Orange
46 ± 3 "
Normal
Red - Yellow
Red - Blue
46 ± 4 "
106
Abnormal
Open or short
(Short, for White - Blue)
Open
Abnormal
Open or short
Abnormal
Open or short