E7 (Indoor Pcb /Display Board Communication Error) - INVENTOR O3MVI32-09WiFiR Service Manual

5.7

E7 (Indoor PCB /Display board communication error)

Description: Indoor PCB does not receive feedback from Display board for 120 seconds.
Recommended parts to prepare:
• Wiring mistake
• Faulty PCB
• Display board malfunction
Troubleshooting and repair:
Power off, then restart the unit
2 minutes later.
Is it still displaying
the error code?
Check the wirings and
Replace the indoor main
extinguished?
Replace the Display board.
YES
connection.
Are all the
connections
good?
YES
PCB.
Is the error
NO
NO The unit is operating normally.
Correct the connection
NO
or replace the Wirings.
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