33
10-6. HOW TO CHECK THE PARTS
Parts name
Check points
Disconnect the connector then measure the resistance with a tester.
(At the ambient temperature of 10°C~30°C)
Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)
Measure the resistance between the terminals with a tester.
Drain pump (DP)
(Option)
Drain float switch (FS)
(Option)
(Refer to Thermistor characteristic graph.)
Room temperature
thermistor (TH1)
Liquid pipe thermistor
(TH2)
Condenser/evaporator
temperature thermistor (TH5)
1
3
Normal
4.3k
Ω
~9.6k
Ω
Abnormal
Open or short
Normal
Abnormal
290
Ω
Open or short
State of moving part
Abnormal
DOWN
Other than open
UP
Normal
Open
Short
Other than short
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20°C~30°C
Vane motor (MV)
Abnormal
Open or short
Red - Yellow
Red - Blue
Red - Orange
Red - White
Connector
Normal
300
Ω
2
1
Moving part
4
3
Switch
Magnet
Moving part
Yellow
Blue
Red
Orange
White
MV
PCA-RP35KAQ PCA-RP50KAQ PCA-RP60KAQ PCA-RP71KAQ
PCA-RP100KAQ PCA-RP125KAQ PCA-RP140KAQ
PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1
0
10
20
30
40
50
-20 -10 0 10 20 30 40 50
< Thermistor for lower temperature >
Temperature (
)
Resistance (k
)
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Pipe temperature thermistor/liquid(TH2)
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R
0
=15k
'
± 3%
Fixed number of B=3480
± 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
10-6-1. Thermistor
OCH491B
