Troubleshooting
Page 92
5.6 Eb (Communication error between the indoor PCB and display board)
Description: Indoor PCB does not receive feedback from Display board.
Recommended parts to prepare:
• Wiring mistake
• PCB faulty
• Display board malfunction
Troubleshooting and repair:
Power off,
then restart the
unit 2 minutes later.
Is it still displaying
the error code?
The unit operates normally.NO
Check the wirings and
connection.
YES
Is it normal?
Correct the connection
or replace the Wirings.
NO
Replace the indoor main PCB.
YES
Is the problem solved?
Replace the Display board.
NO
The unit operates normally.
YES
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