F.455, F.456 — Burner in a fault state (Error in program run monitoring)

What does F.455, F.456 mean?

The burner is in a fault state due to an error detected in the program run monitoring. This suggests an issue with the burner's internal program execution.

• BCU burner control unit faulty
• Error in program run monitoring

Click steps to track your progress.

1. 1

   Reset the appliance.

2. 2

   If the fault recurs, contact a qualified technician.

3. 3

   Ensure the appliance has been reset correctly after the initial fault.