Mitsubishi Heavy Industries FDT100VNAWVH Service Manual page 147

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
• Defective interface kit
Note:
RUN light TIMER light
Indoor
display
– –
Green LED Red LED
Outdoor unit
control PCB
Stays OFF Stays OFF
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
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
146
-
Content
No display
YES
YES
YES
YES
YES
-
'19 • PAC-SM-309
Countermeasure
Defective remote control
Defective remote control
Defective interface kit
Defective interface kit
Defective connecting wire.
Defective remote control
wire (Short-circuit, etc.)
Defective indoor unit
control PCB ➞ Replace.