Trouble Shooting - Mitsubishi Electric PLFY-P32VKM-A Technical & Service Manual

7

TROUBLE SHOOTING

7-1. How to check the parts PLFY-P•VKM-A
Parts name
Room temperature Disconnect the connector, then measure the resistance using a tester.
thermistor
(TH21) (Surrounding temperature 10°C~30°C)
Liquid pipe thermistor
(TH22)
Gas pipe thermistor
(TH23)
Vane motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 20;~30;)
Fan motor Measure the resistance between the terminals using a tester.
Relay connector
1
Red 1
Relay connector
White
2
2
3
Black
3
Protector
Linear expansion Disconnect the connector then measure the resistance valve using a tester.
valve
CN60
White
1
Yellow
2
Orange
3
LEV
Blue
4
Red
5
Brown
6
Drain-up
Measure the resistance between the terminals using a tester.(Surrounding temperature : 20;~30;)
mechanism
Gray
1
2
Gray
Drain sensor Measure the resistance after 3 minutes have passed since the power supply was intercepted.
(Surrounding temperature : 0; ~ 60;)
1
2
3
Normal
4.3k ~9.6k Open or short
' '
Normal
Approx.14k Open or short
'
Motor terminal
or
Red-Black
White-Black
Normal
(1)-(5) (2)-(6)
White-Red Yellow-Blown
150'
Normal
327 Open or short
'
Normal
0.6k' '
~6.0k
Check points
Abnormal
(Refer to the next page for a detail.)
Abnormal
Normal
PLFY-P•VKM
P32,P40,P50,P63
136.2'
197.5'
(3)-(5) (4)-(6)
Orange-Red Blue-Brown
±10%
Abnormal
Abnormal
Open or short
12
Abnormal
Open or short
Abnormal
(Refer to the next
page for a detail.)
Open or short
(Refer to the next page for a detail.)