Midea ODMFI-E-2110

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7.4.2.17 Communication malfunction between adapter board and outdoor main control board(ODU Ed)
Malfunction decision
conditions
If outdoor PCB does not receive feedback from adapter board.
Supposed causes
● Wiring mistake
● Faulty PCB
YES
Power off, then restart the unit after 3
minutes.
Does the error still
exist?
Replace the outdoor main control
board
Does a problem remain? The unit is operating normallyNO
Check the wirings and connections
YES
Are all the
connections good?
Ensure proper connectionsNO
YES
Replace the adapter main
PCB
The problem is solvedNO