F.372 — Burner in a fault state (Repeated flame loss during calibration)

What does F.372 mean?

The burner repeatedly loses its flame during the calibration process, which can prevent it from operating correctly. This may be due to electrode issues, flue system problems, or gas solenoid valve contamination.

• Ionization electrode or connecting cable issue
• Loose plug-in connections
• Flue gas recirculation
• Condensate backup
• Contamination of gas solenoid valve inlet or strainer
• Foreign bodies in combustion air

Click steps to track your progress.

1. 1

   Reset the appliance.

2. 2

   Check for any condensate backup in the system and clear if necessary.

3. 3

   Review the installation room for sources of foreign bodies in the combustion air (e.g., aerosols, cleaning products).

4. 4

   If the fault persists, contact a qualified technician to inspect the ionization electrode, flue system, or gas solenoid valve.