Pmfy-P25Vbm-Epmfy-P25Vbm-E; Pmfy-P25Vbm-E#2; Pmfy-P25Vbm-Er3; Pmfy-P25Vbm-Er4 - Mitsubishi Electric City Multi PMFY Series Technical & Service Manual

8
TROUBLESHOOTING
8-1. HOW TO CHECK THE PARTS
PMFY-P20VBM-E
PMFY-P20VBM-E
1
PMFY-P20VBM-E#2
PMFY-P20VBM-ER3
PMFY-P20VBM-ER4
Parts name
Room temperature Disconnect the connector then measure the resistance with a tester.
thermistor (TH21) (At the ambient temperature 10: - 30:)
Liquid pipe temperature
thermistor (TH22)
Gas pipe temperature
thermistor (TH23)
Vane motor (MV) Measure the resistance between the terminals with a tester.
(At the ambient temperature 20: - 30:)
Yellow
2
MV
Red
4
Brown
5
1 3
Orange
Green
Linear expansion
Disconnect the connector then measure the resistance valve with a tester.
valve(LEV)
Refer to the next page for a detail.
Blue
4
Brown
M
6
Yellow
2
5 3
1
Orange
Red
White
Drain pump (DP)
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20:)
Blue
1
3
Blue
Drain sensor (DS)
Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(At the ambient temperature 0: - 60:)
1
2
3
OC307F
PMFY-P25VBM-E
PMFY-P25VBM-E

PMFY-P25VBM-E#2

PMFY-P25VBM-ER3

PMFY-P25VBM-ER4

Normal Abnormal
4.3k"~9.6k" Open or short
Connector Normal
Brown — Yellow
Brown — Red
380" i7%
Brown — Orange
Brown — Green
Normal
(1)-(5) (2)-(6)
White-Red Yellow-Brown
200" i10%
Normal Abnormal
400"~480" Open or short
Normal Abnormal
0.6k"~6.0k" Open or short
PMFY-P32VBM-E
PMFY-P32VBM-E
1
PMFY-P32VBM-E#2
PMFY-P32VBM-ER3
PMFY-P32VBM-ER4
Check points
Refer to the next page for the details.
Abnormal
Open or short
(3)-(5) (4)-(6)
Orange-Red Blue-Brown
Refer to the next page for the details.
22
PMFY-P40VBM-E
PMFY-P40VBM-E
1
PMFY-P40VBM-E#2
PMFY-P40VBM-ER3
PMFY-P40VBM-ER4
Abnormal
Refer to the next
Open or short
page for the details.
1