Mitsubishi Heavy Industries MHI FDU71VNXVF1 Technical Manual page 306

Error code
None
Remote control:
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
4. Presumable cause
• Faulty indoor control PCB
• Defective remote control
• Broken remote control wire
Note:
LED Green Red
Keeps flashing Stays OFF
Indoor
Keeps flashing 2 times flash
Outdoor
5. Troubleshooting
Diagnosis
Remote control does not display
anything after the power on.
Is DC10V or
higher detected at remote control connection
terminals?
NO
Is DC10V or higher
detected on remote control wires if
the remote control is
removed?
NO
Are wires
connected properly between the
indoor/outdoor units?
NO
305
-
Content
No display
YES
YES
YES
-
'12 • PAC-T-178
Countermeasure
Defective remote control
Defective remote control
Defective connecting wire.
Defective remote control
wire (Short-circuit, etc.)
Defective indoor control
PCB ➞ Replace.