Mitsubishi Heavy Industries FDT71VNXVD Service Manual page 59

Error code
Remote controller: None
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
Note:
LED Green Red
Content
Indoor Keeps flashing Stays OFF
Outdoor Keeps flashing 2 times flash
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
Are wires
connected properly between the
indoor/outdoor units?
NO

- -
No display
YES
YES
YES
-
'10 • PAC-SM-137$
Countermeasure
Defective remote controller
Defective remote controller
Defective connecting wire.
Defective remote controller
wire (Short-circuit, etc.)
Defective indoor control
PCB Replace.