BoilerFaultCodes Blue indicator light flashing High
Boiler Fault Code Blue indicator light flashing
Also written as BLUEINDICATORLIGHTFLASHING — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Blue indicator light flashing 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 signalling a general internal fault that has caused it to stop working to ensure your safety. (As reported on Worcester Bosch 28i Junior)
Pick your boiler brand for the Blue indicator light flashing fix
Source
Information for the Blue indicator light flashing 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