F9 - Connector 2 or more open

What does F9 mean?

This error means that two or more connectors, likely within the outdoor unit, are open or disconnected. This points to multiple wiring issues or a more general problem.

• Multiple loose or disconnected connectors.
• General wiring fault.

Click steps to track your progress.

1. 1

   Power cycle the unit by turning off its dedicated circuit breaker for 30 seconds.

2. 2

   Restore power and observe if the error clears.

3. 3

   If the error remains, contact a qualified technician as multiple internal connections need checking.