Option - Mitsubishi Electric Mr.SLIM PCA-RP50KAQ Service Manual

10-6. HOW TO CHECK THE PARTS
PCA-RP35KAQ PCA-RP50KAQ
PCA-RP100KAQ PCA-RP125KAQ
PCA-RP50KAQR1 PCA-RP60KAQR1 PCA-RP71KAQR1
Parts name
Room temperature Disconnect the connector then measure the resistance with a tester.
thermistor (TH1) (At the ambient temperature of 10°C~30°C)
Pipe temperature
thermistor/liquid(TH2)
Condenser/evaporator
temperature thermistor (TH5)
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 20°C~30°C
White
MV
Orange
Red
Yellow
Blue
Drain pump (DP) Measure the resistance between the terminals with a tester.
(Winding temperature 20°C)

(Option)

1
3
Drain float switch (FS)
Measure the resistance between the terminals with a tester.
Moving part
State of moving part
1
2
3
4
(Option)
10-6-1. Thermistor
<Thermistor Characteristic graph>
Room temperature thermistor(TH1)
Thermistor for
Pipe temperature thermistor/liquid(TH2)
lower temperature
Condenser/evaporator temperature
thermistor(TH5)
Thermistor R =15kΩ ± 3%
0
Fixed number of B=3480 ± 2%
1
Rt=15exp { 3480(
273+t
0˚C 15kΩ
10˚C 9.6kΩ
20˚C 6.3kΩ
25˚C 5.4kΩ
30˚C 4.3kΩ
40˚C 3.0kΩ
OCH491C
PCA-RP60KAQ
PCA-RP140KAQ
Normal Abnormal
Open or short
Connector Normal
Red - Yellow
Red - Blue
300
Red - Orange
Red - White
Normal Abnormal
Open or short
Normal
UP Short
DOWN Open
1
) }
273
PCA-RP71KAQ
Check points
(Refer to Thermistor characteristic graph.)
Abnormal
Open or short
Abnormal
Other than short
Other than open
50
40
30
20
10
0
33
Switch
Magnet
Moving part
< Thermistor for lower temperature >
-20 -10 0 10 20 30 40 50
Temperature ( )