F.161 — Burner in fault state due to BCU data memory access error

What does F.161 mean?

The burner is in a fault state due to an error accessing the data memory of the BCU burner control unit. This prevents the boiler from functioning correctly.

• BCU data memory access error
• Faulty BCU burner control unit

Click steps to track your progress.

1. 1

   Reset the boiler by briefly turning off and on its power supply.

2. 2

   If the fault recurs, contact a qualified heating engineer for further diagnosis.

3. 3

   An engineer may need to replace the BCU burner control unit if the issue persists.