Mitsubishi Heavy Industries FDC250VSA Service Manual

'14 • PAC-SM-215
E9
Drain trouble
(FDT, FDTC, FDU and FDUM series)
Keeps ashing 1-time ash
Keeps ashing Stays OFF
1. Applicable model
5. Troubleshooting
FDT, FDTC, FDU and FDUM
series only
Diagnosis Countermeasure
Is the humidifier connected?
NO
Drain motor ON from the remote control
YES
Does drain motor
operate?
YES
NO
Check the error data in the remote control.
Is there any overflow?
Is DC12V
at CNI connector.
Is the
CNI connected
firmly?
NO
YES
Is
there any
anomaly on the optional
equipment?
NO
YES
YES
Is the
humidifier drain motor
interlocked by the indoor unit function
setting of remote
control?
NO
YES
Is
DC12V (FDTC:AC220/240V)
detected at CNR connector?
NO
YES
Is the drain
piping unclogged? Is the
drain pipe slop
OK?
NO
YES
NO
YES
NO
Check oat switch.
Defective indoor control
PCB
➞
Replace.
Defective indoor control
PCB
➞
Replace.
Check optional equipment
Correct setting to
“Humidier drain motor
interlock”.
Defective indoor control
PCB
➞
Replace.
(Replace power PCB on
FDTC series.)
Check wiring of drain
motor
Correct.
Check drain motor.
2. Error detection method
Float switch is activated
3. Condition of Error displayed
If the oat switch OPEN
is detected for 3 seconds
continuously or if oat
switch connector or wire is
disconnected.
4. Presumable cause
• Defective indoor control PCB
• Float switch setting error
• Humidifier drain motor
interlock setting error
• Option equipment setting
error
• Drain piping error
• Defective drain motor
• Disconnection of drain motor
wiring
Note:
When this error occurred at power ON, disconnection of wire or connector of the oat switch is suspected. Check and
correct it (or replace it, if necessary).
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
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Mitsubishi Heavy Industries FDC250VSA Specifications

General

Brand	Mitsubishi Heavy Industries
Model	FDC250VSA
Category	Air Conditioner
Language	English