Mitsubishi Electric FDT125VNVF Technical Manual page 427

Error code
None
Remote controller:
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Faulty indoor control PCB
• Defective remote controller
• Broken remote controller wire
• Defective interface kit
Note:
RUN light TIMER light
Indoor
– –
display
Green LED Red LED
Outdoor
Keeps flashing 2 times flash
control PCB
5. Troubleshooting
Diagnosis
Remote controller does not display
anything after the power on.
Is DC10V or
higher detected at remote controller connection
terminals?
NO
Is DC10V or higher
detected on remote controller wires if
the remote controller is
removed?
NO
Is DC10V or
higher detected at interface kit connection
terminals?
NO
Is DC10V or higher
detected on connecting wires if
the interface kit is
removed?
NO
Are wires
connected properly between the
indoor/outdoor units?
NO
426 426
- -
Content
No display
YES
YES
YES
YES
YES
- -
'12 • PAC-T-174
Countermeasure
Defective remote controller
Defective remote controller
Defective interface kit
Defective interface kit
Defective connecting wire.
Defective remote controller
wire (Short-circuit, etc.)
Defective indoor control
PCB ➞ Replace.