F.463 — Burner in a fault state (Contaminated combustion air, flue gas recirculation)

What does F.463 mean?

The burner is in an error state due to contaminated combustion air or flue gas recirculation. Deposits on electrodes can indicate foreign bodies affecting combustion.

• Contaminated combustion air
• Flue gas recirculation
• Deposits on electrodes (e.g., from laundry detergents, cleaning agents, toiletries)

Click steps to track your progress.

1. 1

   Reset the burner.

2. 2

   Check the installation room and flue system for sources of contamination or foreign bodies, such as household chemicals or deposits.

3. 3

   If the fault persists, contact a qualified technician to clean the flue system and inspect combustion components.