Mitsubishi Electric PCA-RP50GA Service Manual page 29

9-5. HOW TO CHECK THE PARTS
PCA-RP50GA PCA-RP50GA2 PCA-RP60GA
PCA-RP71GA PCA-RP100GA PCA-RP125GA
PCH-P50GAH PCH-P60GAH
PCH-P100GAH PCH-P125GAH PCH-P140GAH
Parts name
Room temperature Disconnect the connector then measure the resistance using a tester.
thermistor (TH1)
(Surrounding temperature 10:~30:)
Pipe temperature
thermistor (TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Measure the resistance between the terminals using a tester.
Fan motor
Relay connector
(Winding temperature 20:)
1
Red 1
White
2
2
3
Black
3
Protector
OFF : 130i 5:
ON : 80i 20:
Vane motor
4
Orange
5 M
Red
2
Pink
Yellow Brown Blue
3 6 1
4
Pink
M
2
Orange
Red
5
Yellow Blue
3 1
Measure the resistance of each heater element by using a tester.
Heater
(Surrounding temperature 20:)
(Only PCH)
Drain-up
Measure the resistance between the terminals using a tester.
(Winding temperature 20:)
mechanism (Option)
Gray
1
3
Gray
Contactor
Measure the resistance between the terminals using a tester.
(Only PCH)
PCH-P71GAH
Normal
4.3k"~9.6k" Open or short
Motor terminal
or
50GA
Relay connector
Red–Black
70.6"
White–Black
69.6"
Connector
50GA
Brown–Yellow
Brown–Blue
186~214"
Red–Orange
Red–Pink
Normal
Connector
100, 125, 140
Red–Yellow
Red–Blue
140~160"
Red–Orange
Red–Pink
50 60, 71
13.7"
0.467kW 80V 0.7kW 80V
Normal
195" Open or short
Normal
50~140
6 1
88H
160"
PCA-RP140GA
Check points
Abnormal
(Refer to the next pege for a detail.)
Normal
50GA2
60, 71
45.0"
44.8"
Normal
50GA2, 60, 71
140~160"
Abnormal
Open or short
Normal
100
9.1" 7.1"
0.9kW 80V
Abnormal
Abnormal
Open or short
29
100 125, 140
43.7" 20.4"
55.3" 20.7"
Abnormal
Open or short
125,140
6.4"
1.0kW 80V
Abnormal
Open or short
Abnormal
Open or short