Mitsubishi Electric FDF71VNXVD Technical Manual page 164

Error code
E1
Remote controller:
1. Applicable model
All models
2. Error detection method
When normal communication
between the remote controller
and the indoor unit is
interrupted for more than 2
minutes. (Detectable only with
the remote controller)
3. Condition of Error displayed
Same as above
4. Presumable cause
• Defective communication
circuit between remote
controller-indoor unit
• Noise
• Defective remote controller
• Faulty indoor control PCB
Note:
If the indoor unit cannot communicate normally with the remote controller for 180 seconds, the indoor unit PCB starts to
reset automatically.
LED Green Red
Keeps flashing Stays OFF
Indoor
Keeps flashing Stays OFF
Outdoor
5. Troubleshooting
Diagnosis
Is it possible to
reset normally by the
power reset?
Turn SW7-1 to OFF. � ON
Remove the wire � connecting
between indoor/outdoor units.
Power reset
Does the drain
pump restart automatically
1 minute later?
Note (2) Does the remote controller still display "
after 3 minutes?
163
-
Content
Remote controller
communication circuit error
YES
NO
YES
NO
" even
WAIT
-
'11 • PAC-T-160
Countermeasure
Malfunction by noise
Check peripheral
environment.
Defective indoor control
PCB ➞ Replace.
Defective remote controller
➞ Replace.