Use and Care Manual

Troubleshooting 26

Note: For certain models, outdoor PCB could not be removed separately. In this case, the outdoor electric

control box should be replaced as a whole. This picture and the value are only for reference, actual appearance

and value may vary

7.6 EH 0b (Indoor PCB / Display board communication error diagnosis and solution)

Description: Indoor PCB does not receive feedback from the display board.

Recommended parts to prepare:

• Communication wire

• Indoor PCB

• Display board

Troubleshooting and repair:

Is it still displaying

the error code?

The unit functions normally

Check the wirings and connections

Are all the connections

good

Replace the indoor main PCB

Does the error still exist?

Replace the display board

Power off, then restart the unit 2 minutes

later

Ensure a proper connection

YES