Trouble Shooting - Mitsubishi Electric PKFY-P32VGM-E Technical & Service Manual

7

TROUBLE SHOOTING

7-1. HOW TO CHECK
PKFY-P32VGM-E PKFY-P40VGM-E PKFY-P50VGM-E
Parts name
Room temperature Disconnect the connector then measure the resistance with the 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 using the tester.
(Surrounding temperature 20°C~30°C)
4
Orange
5
Red M
2
Pink
6
3 1
Yellow Brown
Blue
Fan motor
Measure the resistance between the terminals using the 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 the tester.
valve (Surrounding temperature 20°C)
Blue
4
Brown
6
M
White-Red
2 Yellow
5 3
1
White
Red Orange
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)
Yellow-Brown
150'
Check method
Abnormal
Normal
186' ~ 214'
Normal
141.2Ω
131.5Ω
(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.