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Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.
31
DIAGNOSIS AND SOLUTION (CONT)
Communication error between the Indoor PCB and Display Board (EH0b)
Description: Indoor PCB does not receive feedback from the display board.
Recommended parts to prepare:
• Wiring mistake
• PCB faulty
• Display board malfunction
Troubleshooting and Repair:
Is the unit 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 wires.
NO
Replace the indoor main PCB.
YES
Is the problem solved? Replace the display board.
NO
The unit operates normally.
YES
Power o the unit. Restart
the unit 2 minutes later.
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