Troubleshooting; Trouble Shooting - Mitsubishi city multi PKFY-08NAMU-A Technical & Service Manual

9

TROUBLE SHOOTING

9-1. How to check the parts PLFY-12, 20, 24, 32, 40NAMU-A
Parts name
Room temperature Disconnect the connector then measure the resistance using a tester.
thermistor (TH21) (Surrounding temperature 50_F~86_F)
Liquid pipe thermistor
(TH22)
Gas pipe thermistor
(TH23)
Vane motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 68_F~86_F)
4
White
M
2
Orange
1
Red
5 3
Blue Yellow
Fan motor Measure the resistance between the terminals using a tester.
Relay connector
1
Red
1
White
2
2
3
Black
3
Protector
OPEN : 266I9°F
CLOSE : 176I36°F
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 pump Measure the resistance between the terminals using a tester.
(Surrounding temperature 68_F~86_F)
Yellow
1
2
Yellow
Drain sensor Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature 50_F~140_F)
1
2
3
Normal
4.3k"~9.6k" Open or short
Connector Normal
Red — Yellow
Red — Blue
Red — Orange
Red — White
Motor terminal
or
Relay connector
12, 20, 24
Red-Black
White-Black
Normal
1 - 5 2 - 6
White-Red Yellow-Brown
150" i10%
Normal
319" Open or short
Normal
0.6k"~6.0k" Open or short
OC290-23
Check points
Abnormal
(Refer to the next page for a detail.)
Abnormal
300" Open or short
Normal
PLFY-NAMU-A
32, 40
87.2" 32.6"
104.1" 40.7"
3 - 5 4 - 6
Orange-Red Blue-Brown
Abnormal
Abnormal
(Refer to the next page for a detail.)
Abnormal
Open or short
Abnormal
(Refer to the next
page for a detail.)
Open or short