F1 - Reverse phase detected in outdoor unit

What does F1 mean?

This code indicates that the electrical phases supplying the outdoor unit are reversed. This is a critical power supply issue.

• Incorrect wiring of the main power supply.
• Incorrect phase sequence from the electrical panel.
• Issue with the outdoor unit's power input.

Click steps to track your progress.

1. 1

   Turn off the main power supply to the air conditioning system at the circuit breaker.

2. 2

   Consult a qualified electrician to inspect and correct the phase wiring to the outdoor unit.

3. 3

   Do not restore power until a professional has verified the wiring.