Trouble Shooting - Mitsubishi Electric PLFY Series 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
(Surrounding temperature 10°C~30°C)
(TH21)
Liquid pipe thermistor
(TH22)
Normal
Gas pipe thermistor
(TH23)
4.3k
Vane motor Measure the resistance between the terminals using a tester.
(Surrounding temperature 20;~30;)
Normal
Approx.14k
Fan motor Measure the resistance between the terminals using a tester.
Relay connector
Motor terminal
1
Red 1
Relay connector
White
2
2
Red-Black
3
Black
3
White-Black
Protector
Linear expansion Disconnect the connector then measure the resistance valve using a tester.
valve
CN60
White
1
Yellow
2
(1)-(5)
Orange
3
LEV White-Red
Blue
4
Red
5
Brown
6
Drain-up
Measure the resistance between the terminals using a tester.(Surrounding temperature : 20;~30;)
mechanism
Normal
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
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Abnormal
~9.6k Open or short
' '
Abnormal
Open or short
'
Normal
or PLFY-P•VKM
P32,P40,P50,P63
136.2'
197.5'
Normal
(2)-(6) (3)-(5)
Yellow-Blown Orange-Red
150'
±10%
Abnormal
327 Open or short
'
Normal Abnormal
Open or short
0.6k' '
~6.0k
Check points
(Refer to the next page for a detail.)
Abnormal
Open or short
Abnormal
(4)-(6)
Blue-Brown
Open or short
(Refer to the next page for a detail.)
12
(Refer to the next
page for a detail.)