Burner On Low
Boiler Fault Code Burner On
Also written as BURNERON — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Burner On appears across 4 boiler brands and 9 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is working normally and the burner is currently lit to provide heating or hot water. (As reported on Potterton Performa 24)
Pick your boiler brand for the Burner On fix
Source
Information for the Burner On 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