Mitsubishi FDK15KXZE1 - Page 103

'17 • KX-T-264
Error code
Remote control:
LED Green Red
Indoor
Outdoor
Content
E20
Indoor DC fan motor rotation
speed anomaly
Keeps ashing 1-time ash
Keeps ashing Stays OFF
1. Applicable model
5. Troubleshooting
All models
Diagnosis Countermeasure
NO
YES
YES
YES
Does any
foreign material
intervene in rotational area
of fan propeller?
Is DC280V detected
between FDT : ➀-➃, FDK : ➀-➂
of fan motor connector
CNM?
Is it normalized?
Is the fuse F1 or F2 blown?
Does the fan
rotate smoothly when turned
by hand?
YES
NO
NO
NO
YES
NO
YES
Power source reset
Is DC15V
detected between connector
CNM FDT : ➃-➄, FDK : ➂-➃ when
the fan motor on command
is released?
Is DC15V detected
between CNM FDT : ➃-➄, FDK : ➂-➃
when the connector is disconnected at the fan motor side
and the fan motor on command is
released?
NO
NO
YES
Remove foreign material.
Replace the fan motor.
Check power voltage.
Replace faulty fan motor
and power PCB.
Replace the indoor unit
control PCB.
Replace fan motor.
Replace fan motor. (If the
error persists after replacing
the fan motor, replace the
indoor unit control PCB.)
Malfunction by temporary
noise
2. Error detection method
Detected by rotation speed of
indoor fan motor
3 . Condition of error displayed
When the actual fan rotation
speed does not reach to the
speed of [required speed
-50 min
-1
] after 2 minutes have
been elapsed since the fan
motor rotation speed command
was output, the unit stops by
detecting indoor fan motor
anomaly.
4. Presumable cause
• Defective indoor unit power
(control) PCB
• Foreign material at rotational
area of fan propeller
• Defective fan motor
• Dust on control PCB
• Blown fuse
• External noise, surge
Note:
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