Carrier 38MHRC - Page 40

38MHRC: Service Manual
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40
DIAGNOSIS AND SOLUTION (CONT)
Indoor PCB / Display board communication error diagnosis and solution (E7/EH 0b)
Description: Indoor PCB does not receive feedback from the display board.
Possible causes:
• Communication wire
• Indoor PCB
• Display Board
Troubleshooting
A210600