Boiler Fault Code BURNER FAILS TO START

Also written as BURNERFAILSTOSTART — same fault.

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

Fault code BURNER FAILS TO START 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 failing to ignite because it is not receiving the necessary signals or power to start the heating process. (As reported on Worcester Bosch Utility)