Mitsubishi Electric FDT125VNVF Technical Manual page 421

Error code
None
Remote controller:
1. Applicable model
All models
2. Error detection method
The limit switch operates when
the indoor unit is stopped.
3. Condition of Error displayed
Same as above
4. Presumable cause
• Defective Limit switch
• Faulty indoor control PCB
Note:
RUN light TIMER light
Indoor
Stays OFF Keeps flashing
display
Green LED Red LED
Outdoor
Keeps flashing Stays OFF
control PCB
5. Troubleshooting
Diagnosis
panel set correctly?
Are limit switch OK?
Note (1) Check the operation of limit switch by checking if
the error can be rest or not by pushing the limit switch
by finger when the inlet panel is removed.
420 420
- -
Content
Limit switch anomaly
Is the inlet
NO
YES
⑴
NO
YES
- -
'12 • PAC-T-174
Countermeasure
Correction, re-set
Defective limit switch ➞
Replace.
Defective indoor control
PCB ➞ Replace.
(Defective limit switch
input circuit)