F7 - Reverse phase detector circuit fault in outdoor unit

What does F7 mean?

This error means there's a fault with the reverse phase detector circuit located on the outdoor unit's main circuit board.

• Malfunctioning reverse phase detector circuit.
• Problem with the outdoor unit's p.c.board (printed circuit board).
• Power supply anomalies affecting the detector.

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

   As this involves a circuit board fault, contact a qualified HVAC technician for diagnosis and repair.

3. 3

   The technician will need to inspect or replace the outdoor unit's p.c.board.

4. 4

   Do not attempt to fix circuit board issues yourself.