F2 - L3 open phase detected

What does F2 mean?

The system has detected an open phase on the L3 power line, typically affecting the outdoor unit. This means there is a loss of power on one of the electrical phases.

• Loss of power on the L3 phase.
• Loose or disconnected wiring for the L3 phase.
• Faulty circuit breaker or power supply component.

Click steps to track your progress.

1. 1

   Turn off the main power supply to the unit at the circuit breaker.

2. 2

   Wait for at least 30 seconds and then restore power.

3. 3

   Check the main circuit breaker for the air conditioning unit to ensure it is fully engaged.

4. 4

   If the issue continues, a professional inspection of the electrical wiring is needed.