E7 (Indoor Pcb /Display Board Communication Error) - Kaisai FLY INVERTER Series 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?
Replace the indoor main
NO
YES
NO
YES
PCB.
NO
Correct the connection
or replace the Wirings.
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