Mitsubishi Heavy Industries FDC112KXEN6 Technical Manual page 359

Error code
Remote controller: E45
7-segment display: E45
1. Applicable model
FDC112-155KXEN6
FDC112-155KXES6
2. Error detection method
3. Condition of error displayed
If the communication between
inverter PCB and outdoor
control PCB is not established.
4. Presumable cause
• Faulty inverter PCB
• Faulty connector between
inverter PCB and outdoor
control PCB
• Faulty outdoor control PCB
Note:
LED Green Red
Keeps flashing Stays Off
Indoor
Keeps flashing 1 time flash
Outdoor
5. Troubleshooting
Diagnosis
Save data for 30 minutes before stoopping in Mente PC
Are the
connectors of inverter
PCB and outdoor control
PCB OK?
YES
Are
both JSW10, 11
on the inverter PCB
OFF?
YES
Is LED on the inverter
PCB flashing?
YES
Is the
connection
between inverter PCB
and outdoor control
PCB OK ?
YES
Replace outdoor control PCB
Does it become normal?
355
–
Content
Communication error between
inverter PCB and outdoor control PCB
NO
NO
NO
NO
(1) 0.4Ω or more at 25°C
NO
YES
–
Countermeasure
Check and save the data of
operating conditions
Insert the connectors
securely
Switch OFF all
No power on inverter PCB
➝ Find the cause
• Anomalous fan motor
(FDC112-155KXEN6 only)
• Faulty power circuit of
control PCB
(FDC112-155KXEN6 only)
Connect the signal wires
correctly
Replace inverter PCB
OK