Mitsubishi Electric PCFY-P40VGM-E Technical & Service Manual page 17

7
TROUBLE SHOOTING
7-1. How to check the parts
PCFY-P40VGM-E PCFY-P63VGM-E PCFY-P100VGM-E PCFY-P125VGM-E
Parts name
Room temperature Disconnect the connector then measure the resistance using a tester.
thermistor (TH21) (Surrounding temperature 10:~30:)
Liquid pipe temperature
thermistor (TH22)
Gas pipe temperature
thermistor (TH23)
Fan motor Measure the resistance between the terminals using a tester.
Relay connector
1
Red
1
White
3
3
5
Black
5
Protector
Linear expansion Disconnect the connector then measure the resistance valve using a tester.
Blue
4
valve
Brown
6
M
2 Yellow
5 3
1
White
Red Orange
Drain-up machine Measure the resistance between the terminals using a tester.
(Optional) (Surrounding temperature 20:~30:)
Gray
1
3
Gray
Drain sensor Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Optional) (Surrounding temperature 0:~60:)
1
2
3
Vane motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 20:~30:)
4
Orange
M
5
Red
2
Pink
Yellow Brown Blue
6 1
3
Connector
Pin No.
2
Pink
M
4
Orange
5
Red
Yellow
Blue
3 1
Connector
Pin No.
Normal
4.3k"~9.6k" Open or short
Motor terminal
or
Relay connector
P40VGM-E
Red-Black
70.6"
White-Black
69.6"
Normal
(1)-(5) (2)-(6)
White-Red Yellow-Brown
150k" i10%
Normal
92" Open or short
Normal
0.6k"~6.0k" Open or short
Connector
PCFY-P40VGM-E PCFY-P63VGM-E
Brown — Yellow
Brown — Blue
186~214"
Brown — Orange
Brown — Pink
Connector
PCFY-P100VGM-E, PCFY-P125VGM-E
Red — Blue
Red —Yellow
Red — Pink
Red — Orange
Check points
Abnormal
Refer to the next page for the details.
Normal
PCFY-
P63VGM-E P100VGM-E
45.0" 43.7"
44.8" 53.3"
(3)-(5) (4)-(6)
Orange-Red Blue-Brown
Abnormal
Abnormal
Normal
140~160"
Normal
140~160"
17
Abnormal
P125VGM-E
20.4"
Open or short
20.7"
Abnormal
Refer to the next
page for the details.
Open or short
Abnormal
Open or short
Abnormal
Open or short