How much does it cost to fix boiler error code bF?

Typical repair cost for the boiler bF fault is £120-300 including labour.

bF High

Boiler Fault Code bF

Also written as BF — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code bF appears across 1 boiler brand and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler is currently stuck in an automated filling process and cannot continue until this is resolved. (As reported on Viessmann Vitodens 200)

Pick your boiler brand for the bF fix

Viessmann bF 7 models

Source

Information for the bF fault code is sourced from the official service / installation manual for each model that displays it. Read more about how we source fault codes →

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026