Mitsubishi Heavy Industries FDT100VNAWVH Service Manual page 155

Error code
E16
Remote control:
1. Applicable model
All models
2. Error detection method
Detected by rotation speed of
indoor fan motor
3. Condition of error displayed
• When actual rotation speed of
indoor fan motor drops to lower
-1
than 300min for 30 seconds
continuously, the compressor
and the indoor fan motor stop.
4. Presumable cause
• Defective indoor unit control
PCB
• Foreign material at rotational
area of fan propeller
• Defective fan motor
• Dust on indoor unit control PCB
• External noise, surge
Note:
RUN light TIMER light
Indoor
display
6-time flash ON
Green LED Red LED
Outdoor unit
control PCB
Keeps flashing Stays OFF
5. Troubleshooting
Diagnosis
Does any
foreign material
intervene in rotational area
of fan propeller?
NO
Does the fan
rotate smoothly when turned
by hand?
YES
Is DC280V
detected between Œ-Ž of
fan motor connector
CNU?
YES
Power source reset
Is it normalized?
154
-
Content
Indoor fan motor anomaly
YES
NO
Note (1) Ž for GND
（1）
NO
NO
YES
-
'19 • PAC-SM-309
Countermeasure
Remove foreign material.
Replace the fan motor.
Replace indoor unit control PCB
Replace fan motor. (If the
error persists after replacing
the fan motor, replace the
indoor unit control PCB.)
Malfunction by temporary
noise