Mitsubishi Heavy Industries FDT71VNXVD Service Manual page 81

Error code
Remote controller: E45
1. Applicable model
All models
2. Error detection method
3. Condition of Error displayed
When communication is not
established between the inverter
PCB and the outdoor control
PCB.
4. Presumable cause
• Defective inverter PCB
• Defective connector between
the outdoor control PCB and
inverter PCB
• Defective outdoor control
PCB
Note:
LED Green Red
Content
Indoor Keeps flashing Stays OFF
Outdoor Keeps flashing 1 time flash
5. Troubleshooting
Diagnosis
Is the connector
connection between the outdoor
control PCB and the inverter
PCB OK?
YES
Are
JSW10, 11 on the inverter
PCB all OFF?
YES
Is LED on the inverter PCB flashing?
YES
Is the
communication wire
between the control PCB and the inverter
PCB connected properly?
YES
Replace the outdoor control PCB.
Is normal state restored?
91
81
– –
Inverter communication error
NO
NO
NO
NO
NO
YES
'10 • PAC-SM-137A
Countermeasure
Correct connector.
Change to OFF.
Check why power is not
supplied to inverter PCB.
• Defective fan motor
Connect communication
wire securely.
Defective inverter PCB
Replace.
OK