Mitsubishi Electric Mr. Slim PCA Series Service Manual page 27

9-6. HOW TO CHECK THE PARTS
PCA-A24KA6.TH
Parts name
Room temperature
Disconnect the connector then measure the resistance with a tester.
thermistor (TH1)
(At the ambient temperature 50 to 86 F [10 to 30 C])
Liquid pipe thermistor
(TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Vane motor (MV)
Measure the resistance between the terminals with a tester.
(At the ambient temperature of 68 to 86 F [20 to 30 C])
White
Orange
Red
Yellow
Blue
Drain pump (DP) (Option)
Measure the resistance between the terminals with a tester.
(Winding temperature 68°F [20 C])
YLW
1
3
YLW
Drain float switch (FS)
Measure the resistance between the terminals with a tester.
(Option)
Moving part
1
2
3
4
i-see sensor
(Option)
4 3 2 1
i-see sensor (At the ambient temperature of 50 to 104 F [10 to 60 C])
4 3 2 1
Blue BlackPink Brown
NOTE : Be careful not to discharge static electricity into electronic device.
Measure the resistance between the terminals with a tester.
Vane motor for
(At the ambient temperature of 68 to 86 F [20 to 30 C])
i-see sensor (Option)
White
Orange
Red
Yellow
Blue
OCH585
PCA-A30KA6.TH
Normal
4.3 to 9.6k" Open or short
Connector Normal
Red - Yellow
Red - Blue
300 "
Red - Orange
Red - White
Normal Abnormal
290 "
Open or short
State of moving part Normal
UP Short
DOWN Open
Turn on the indoor unit with the black plastic tape on the outside of i-see sensor controller board.
i-see sensor rotates then pull out the connector of motor for i-see sensor.
With electricity being turned on, measure the power voltage between connectors with tester.
Black plastic tape
i-see sensor connector
2( )–4(+)
1(+)–2( )
Connector Normal
Red - Yellow
Red - Blue
Red - Orange
Red - White
PCA-A36KA6.TH
Check points
Abnormal
(Refer to "9-6-1. Thermistor".)
Abnormal
Open or short
Abnormal
Other than short
Other than open
Normal
1.857 to 3.132 V DC
0.939 to 1.506 V DC
Abnormal
250 " Open or short
27
PCA-A42KA6.TH
Switch
Magnet
Moving
Part
Abnormal
Other than the normal
Other than the normal