BoilerFaultCodes Boiler On light Low
Boiler Fault Code Boiler On light
Also written as BOILERONLIGHT — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Boiler On light appears across 1 boiler brand and 2 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 is currently receiving a signal to provide heating or hot water. (As reported on Baxi Solo PF)
Pick your boiler brand for the Boiler On light fix
Source
Information for the Boiler On light 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