Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 200

Error code
None
Remote control:
1. Applicable model
All models
2. Error detection method
3. Condition of error displayed
4. Presumable cause
• Faulty indoor unit control
PCB
• Defective remote control
• Broken remote control wire
Note:
LED Green Red
Stays OFF Stays OFF
Indoor
Stays OFF Stays OFF
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?
199
-
Content
No display
YES
YES
YES
NO
-
'19 • PAC-T-327
Countermeasure
Defective remote control.
Defective remote control.
Defective connecting wire.
Defective remote control
wire. (Short-circuit, etc.)
Defective indoor unit
control PCB ➞ Replace.