Troubleshooting - Mitsubishi Electric PAC-AK50BC Technical & Service Manual

7

TROUBLESHOOTING

7-1. HOW TO CHECK THE PARTS
BRANCH BOX : PAC-AK50BC
PAC-AK30BC
Parts name
Disconnect the connector then measure the resistance with a tester.
Thermistor (TH-A~E)
(At the ambient temperature 10 ~30 )
<Gas pipe>
Disconnect the connector then measure the resistance with a tester.
Linear expansion valve
(Winding temperature 20 )
( LEV-A~E )
Red - White Red - Orange Brown - Yellow Brown - Blue
M Red
1
Brown
2
Blue
3
Orange
4
Yellow
5
White
6
OCH508A
PAC-AK51BC
PAC-AK31BC
Normal
4.3k ~ 9.6k
Normal
46 ± 4
PAC-AK52BC
PAC-AK32BC
Check points
Abnormal
Open or short
Abnormal
Open or short
12
PAC-AK53BC