Boiler Fault Code BURNER (FLASHING)

Also written as BURNERFLASHING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026

Fault code BURNER (FLASHING) appears across 1 boiler brand and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has detected an internal electronic error within its main control system that is preventing the burner from safely igniting. (As reported on Grant Vortex Eco External Wall Hung)