F1 - 1 red flash, 1 green flash — Reverse phase detection

What does F1 mean?

This error means the phase rotation of the power supply is incorrect. This can prevent the unit from operating safely.

• Incorrect power supply phase connection
• Faulty power supply wiring
• Defective control board

Click steps to track your progress.

1. 1

   Verify the power supply phases are correctly connected.

2. 2

   Try swapping two of the phase connections to correct the rotation.

3. 3

   Ensure the main power supply wiring is secure.

4. 4

   Contact a qualified technician if the problem persists.