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9-6. HOW TO CHECK THE PARTS
PLA-ZRP35BA.UK
PLA-ZRP35BAR1.UK PLA-ZRP50BAR1.UK
PLA-ZRP71BA.UK
PLA-ZRP71BAR1.UK PLA-ZRP125BAR1.UK PLA-ZRP140BAR1.UK
Parts name
Room temperature
Disconnect the connector then measure the resistance with a tester.
thermistor
(TH1)
(At the ambient temperature of 10 to 30:)
Pipe temperature
thermistor/liquid(TH2)
Condenser/evaporator
temperature thermistor
(TH5)
Measure the resistance between the terminals with a tester.
Vane motor (MV)
(At the ambient temperature of 20 to 30:)
White
MV
Orange
Red
Yellow
Blue
Drain pump (DP)
Measure the resistance between the terminals with a tester.
(Winding temperature 20:)
YLW
1
3
YLW
Drain float switch (FS)
Measure the resistance between the terminals with a tester.
Moving part
State of moving part
1
2
3
4
i-see sensor
Turn on the indoor unit with the black plastic tape on the outside of
(Option)
i-see sensor controller board.
With electricity being turned on, measure the power voltage between connectors with tester.
i-see sensor rotates and pull out the connector of motor for i-see sensor.
4 3 2 1
i-see sensor (At the ambient temperature of 10 to 40:)
4 3
2
1
Blue Black Pink Brown
NOTE : Be careful not to discharge static electricity into electronics.
Measure the resistance between the terminals with a tester.
Vane motor for
(At the ambient temperature of 20 to 30:)
i-see sensor (Option)
White
MV
Orange
Red
Yellow
Blue
OCH535A
PLA-ZRP50BA.UK
PLA-ZRP125BA.UK
Normal
Abnormal
4.3 to 9.6k"
Open or short
Connector
Red - Yellow
(5–3, 0–8, 5–3, )–8)
Red - Blue
(5–1, 0–6, 5–1, )–6)
Red - Orange (5–4, 0–9, 5–4, )–9)
Red - White
(5–2, 0–7, 5–2, )–7)
Normal
Abnormal
290 "
Open or short
Normal
UP
Short
DOWN
Open
Black plastic tape
i-see sensor connector
2(−)—4(+)
1(+)—2(−)
Connector
Normal
Red - Yellow
Red - Blue
250 "
Red - Orange
Red - White
PLA-ZRP60BA.UK
PLA-ZRP60BAR1.UK
PLA-ZRP140BA.UK
Check points
(Refer to "9-6-1. Thermistor ".)
Normal
300 "
Abnormal
Other than short
Other than open
Do not disassemble corner panel
with i-see sensor.
Normal
1.857–3.132 V DC
0.939V–1.506 V DC
Abnormal
Open or short
30
Abnormal
Open or short
Switch
Magnet
Moving
Part
Abnormal
Other than the normal
Other than the normal
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