Mitsubishi SCM40ZS-S User Manual

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252
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'16 • SCM-T-199
E9
Drain trouble
（
FDTC and FDUM series
）
Keeps ashing 1-time ash
Outdoor
–
Stays OFF
1. Applicable model
5. Troubleshooting
FDTC 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 the
CNI connected
firmly?
Is DC 12V
at CNI connector.
NO
YES
Is
there any
anomaly on the optional
equipment?
NO
YES
YES
YES
Is the
humidifier drain motor
interlocked by the indoor unit function
setting of remote
control?
NO
YES
Is
AC220/240V
（FDUM: DC12V）
detected at CNR
connector?
NO
YES
Is the drain
piping unclogged? Is the
drain pipe slop
OK?
NO
YES
NO
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 power
PCB
→
Replace.
（
FDUM: Indoor control PCB
）
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 or
power 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
Content

Mitsubishi SCM40ZS-S Specifications

General

Brand	Mitsubishi
Model	SCM40ZS-S
Category	Air Conditioner
Language	English