Mitsubishi FDT100VNXWVH Service Manual page 139

Error code
None
Remote control:
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 unit control PCB
Note:
RUN light TIMER light
Indoor
display
Stays OFF Keeps flashing
Green LED Red LED
Outdoor unit
control PCB
Keeps flashing Stays OFF
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 reset or not by pushing the limit switch
by finger when the inlet panel is removed.
138
-
Content
Limit switch anomaly
Is the inlet
NO
YES
⑴
NO
YES
-
'20 • PAC-SM-351
Countermeasure
Correction, re-set
Defective limit switch ➞
Replace.
Defective indoor unit control
PCB ➞ Replace.
(Defective limit switch
input circuit)