F7 - 1 red flash, 3 green flashes — Phase detection circuit fault

Was bedeutet F7 ?

This indicates a fault within the phase detection circuit, often related to the outdoor unit's control board.

• Faulty outdoor unit board
• Wiring issue in the phase detection circuit
• Power supply fluctuations

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Inspect the wiring connected to the outdoor unit board.

2. 2

   Ensure the power supply is stable.

3. 3

   If the issue persists, the outdoor board may need replacement.