BoilerFaultCodes green light flashes rapidly High
Boiler Fault Code green light flashes rapidly
Also written as GREENLIGHTFLASHESRAPIDLY — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code green light flashes rapidly appears across 1 boiler brand and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is attempting to start but failing to stay lit, which means it cannot provide heat or hot water reliably. This is likely due to the system detecting a failure in the ignition process. (As reported on Potterton Profile 60E)
Pick your boiler brand for the green light flashes rapidly fix
Source
Information for the green light flashes rapidly 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