Mitsubishi Heavy Industries FDT28KXE6A Service Manual page 76

Error code
E16
Remote controller:
-
7-segment display:
1. Applicable model
FDK series only
2. Error detection method
Detected by revolution speed of
indoor fan motor
3. Condition of error displayed
When actual revolution speed of
indoor fan motor drops to lower
than 200min -1 for 30 seconds
continuously, the compressor
and the indoor fan motor stop.
After 3-seconds delay, fan
motor starts again automatically,
but if this anomaly occurs 4
times within 60 minutes after
the initial detection.
4. Presumable cause
• Indoor fan motor anomaly
• Foreign matter at rotational
area of fan impeller
• Fan motor anomaly
• Dust on control PCB
• Blown fuse
• External noise, surge
Note:
LED Green Red
Keeps flashing 1 time flash
Indoor
Keeps flashing Stays Off
Outdoor
5. Troubleshooting
Diagnosis
Does any
foreign matter intervene
in rotational area of fan
impeller?
NO
Does the fan
rotate smoothly when
turned by hand?
YES
Is DC280V
detected between ➀-➂ of fan motor
connector CNM?
YES
Reset the power supply and restart.
Does it become normal?
74
–
Content
Indoor fan motor anomaly
(FDK series)
YES
NO
Note (1) for GND
➂
(1)
NO
NO
YES
–
Countermeasure
Remove foreign matter.
Replace fan motor.
Replace fan motor and
power PCB
Replace fan motor. (If
this anomaly persists after
replacing the fan motor,
replace indoor control PCB.)
Malfunction by temporary
noise