INVENTOR P9VI32-09WF

61
11.2.11 Indoor PCB /Display board communication error (E7)
Error Code
E7
Malfunction decision
conditions
Indoor PCB does not receive feedback from Display board.
Supposed causes
● Wiring mistake
● PCB faulty
● Display board malfunction
Trouble shooting:
Power off, then restart the unit
2 minutes later.Is it still
displaying the error code?
Replace the indoor main
PCB.Is the error extinguished?
Yes
Replace the Display board
Check the wirings
and connection. Are all
the connections good?
Yes
No
Correct the connection
or replace the wirings
No