MrCool DIY E Star Series, Руководство по устранению неисправностей

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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
NO
NO
YES