Fault code FE — Communication between main control board & Wired controller Fault

What does FE mean?

There is a communication error between the main control board and the wired controller. This can be caused by loose connections, incorrect wiring, or a faulty controller or board.

• The wired controller and the indoor control board are connected loosely
• The sequence of the wiring between the wired controller to the indoor control board is wrong
• The wiring between the wired controller to the indoor control board fails
• The wired controller fails
• The indoor control board is abnormal

Click steps to track your progress.

1. 1

   Reconnect the wiring between the wired controller and the indoor control board.

2. 2

   Verify that the wiring sequence is correct.

3. 3

   Replace the wiring if it is damaged.

4. 4

   If the wiring is correct, replace the wired controller or the indoor control board.