Troubleshooting - Mitsubishi Electric PKFY Series Technical & Service Manual

7
TROUBLE SHOOTING
7-1. HOW TO CHECK THE PARTS
PKFY-P32VGM-E
Parts name
Room temperature Disconnect the connector then measure the resistance with a tester.
thermistor (TH21)
(Surrounding temperature 10°C~30°C)
Liquid pipe temperature
thermistor (TH22)
Gas pipe temperature
thermistor (TH23)
Vane motor Measure the resistance between the terminals with a tester.
(Surrounding temperature 20°C~30°C)
Orange
4
Red 5
M
2
Pink
6
1
3
Yellow Brown
Blue
Fan motor
Measure the resistance between the terminals with a tester.
(Surrounding temperature 20°C)
Fan
Motor terminal or
3
Red 1
White
2
2
1
Black
3
Protector
Linear expansion
Disconnect the connector then measure the resistance with a tester.
valve
(Surrounding temperature 20°C)
Blue
4
Brown
6
M
Yellow
2
5 3
1
White
Red
Orange
OC310B
PKFY-P40VGM-E
Normal
4.3k ~9.6k Open or short
Connector
Brown - Yellow
Brown - Blue
Red - Orange
Red - Pink
relay connector
Red - Black
White - Black
Normal
(1)-(5) (2)-(6)
White-Red Yellow-Brown
150
PKFY-P50VGM-E
Check method
Abnormal
Normal
186 ~ 214
Normal
141.2
131.5
(3)-(5) (4)-(6)
Orange-Red Blue-Brown
±10%
13
Refer to the next page for the details.
Abnormal
Open or short
Abnormal
Open or short
Abnormal
Open or short
Refer to the next
page for the details.