Service manual

22
10-5. HOW TO CHECK THE PARTS
PCA-RP71HA PCA-RP71HA#1
PCA-RP125HA PCA-RP125HA#1
Measure the resistance between the terminals with a tester.
(Winding temperature 20)
Fan motor
(MF)
Open or short
Abnormal
White
Orange
Yellow
Blue
Black
Red
Relay
connector
Protector
Protector
OPEN : 135±5
CLOSE : 95±15
White–Black
Black–Blue
Blue–Yellow
Yellow–Red
Connector
PCA-RP71
140.5
15.4
28.5
80.4
PCA-RP125
75.6
36.7
23.6
47.8
Normal
Parts name Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature 10~30)
(Refer to <Thermistor Characteristic graph> for a detail.)
Room temperature
thermistor (TH1)
Pipe temperature
thermistor (TH2)
Condenser/Evaporator
temperature thermistor
(TH5)
Normal
4.3k~9.6k
Abnormal
Open or short
0
10
20
30
40
50
-20-100 1020304050
< Thermistor for lower temperature >
Temperature ()
Resistance (K)
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Pipe temperature thermistor(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R0=15k ± 3%
Fixed number of B=3480k ± 2%
Rt=15exp { 3480( ) }
0: 15k
10: 9.6k
20: 6.3k
25: 5.4k
30: 4.3k
40: 3.0k
Thermistor for
lower temperature
1
273+t
1
273
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