28
9-6. HOW TO CHECK THE PARTS
PLA-RP35EA.UK PLA-RP50EA.UK PLA-RP60EA.UK
PLA-RP71EA.UK
PLA-RP100EA.UK
PLA-RP125EA.UK PLA-RP140EA.UK
Drain float switch (FS)
2
1
Moving part
4
3
Measure the resistance between the terminals with a tester.
State of moving part
Abnormal
DOWN
Other than open
UP
Normal
Open
Short
Other than short
Switch
Magnet
Moving
Part
Orange
Red
White
Blue
Yellow
M
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 to 30°C)
i-see Sensor motor
(Option)
i-see Sensor (Option)
Room temperature
thermistor (TH1)
Condenser/evaporator
temperature thermistor (TH5)
Measure the resistance with a tester.
(Parts temperature 10 to 30°C)
Pipe temperature
thermistor/liquid (TH2)
Check method and criterion
Parts name
Normal
4.3 to 9.6 k
"
Abnormal
Opened or short-circuited
Measure the resistance between the terminals with a tester.
(At the ambient temperature 20 to 30°C)
Vane motor (MV)
Drain pump (DP)
Normal
Connector
Abnormal
300
"
Open or short
Orange
Red
White
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
)
Blue
Yellow
M
1
2
3
Red
Purple
Black
1
Check if the drain float switch works properly.
2
Check if the drain pump works and drains water properly in cooling operation.
3
If no water drains, confirm that the check code P5 will not be displayed 10 minutes after the
operation starts.
Note: The drain pump for this model is driven by the internal DC motor of controller board, so it is not
possible to measure the resistance between the terminals.
Normal
Red–
Black: Input 13 V DC →
The motor starts to rotate.
Purple–Black: Abnormal (check code P5) if it outputs 0–13 V square wave (5 pulses/rotation), and
the number of rotation is not normal.
Refer to “9-6-1. Thermister”.
1 2 3 4
1 2 3 4
Black
Black
Black
Black
Turn the power ON while the i-see Sensor connector is connected to the CN4Z on indoor
controller board. A communication between the indoor controller board and i-see Sensor
board is made to detect the connection.
Normal: When the operation starts, the motor for i-see Sensor is driven to rotate the i-see Sensor.
Abnormal: The motor for i-see Sensor is not driven when the operation starts.
Note: The voltage between the terminals cannot be measured accurately since it is pulse output.
250
"
Abnormal
Normal
Red–Yellow
Red–Blue
Red–Orange
Open or short
Red–White
OCH626A
