F.379 — Burner in fault state: Flame signal not present or insufficient

What does F.379 mean?

The burner is in a fault state because the flame signal is either not present or insufficient. This is crucial for safe boiler operation.

• Damaged or loose ionization electrode connecting cable
• Faulty ionization electrode

Click steps to track your progress.

1. 1

   Check the ionization electrode connecting cable for any damage and ensure it is firmly seated.

2. 2

   Visually inspect the ionization electrode for damage or wear.

3. 3

   Reset the boiler by briefly turning off and on its power supply. If the fault persists, contact a qualified technician.