-
239
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Error code
Remote control:
7-segment display:
LED Green Red
Indoor
Outdoor
Content
E9
Drain trouble
Keeps flashing
1 time flash
Keeps flashing
Stays Off
1. Applicable model
5. Troubleshooting
FDT and FDTC series
Diagnosis Countermeasure
Is the humidifier connected?
Drain pump motor ON from the remote control.
YES
Does the
drain pump motor
operate?
YES
NO
Check the error data in the remote control.
Is there any overflow?
Is DC
12V detected at CnI
connector?
Is the
CnI
connected
firmly
NO
YES
Is there any
anomaly on the option
equipment?
NO
YES
YES
Is the
humidifier drain pump
motor interlocked by the indoor unit
function setting of remote
control?
NO
YES
Is
AC220/240V
detected at
CnR?
NO
YES
Is the
drain piping unclogged?
Is the drain pipe
slop OK?
NO
YES
NO
YES
NO
NO
Check float switch.
Check the connection of
CnI.
If it is loose, connect it
securely.
Replace indoor unit control
PCB.
Check option equipment.
Correct setting to
"Humidifier drain pump
motor interlock".
Indoor unit control PCB
anomaly
Replace it.
Check the wiring of drain
pump motor.
Correct it.
Check drain pump motor.
2. Error detection method
Float switch is activated
3
.
Condition of error displayed
If the float switch OPEN
is detected for 3 seconds
continuously or if float switch
connector is disconnected or
wire broken.
4. Presumable cause
•
Indoor unit control PCB anomaly
• Mistake in setting of float
switch
• Mistake in setting of
humidifier drain pump motor
interlock
• Mistake in setting of option
equipment
• Mistake in drain piping
• Drain pump motor anomaly
• Disconnection/breakage of
drain pump motor wires
Note:
When this anomaly occurs at power ON, disconnection of connector or breakage of wire of float switch is suspected.
Check and correct it (or replace it, if necessary).
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