BoilerFaultCodes Green fast flashing Low
Boiler Fault Code Green fast flashing
Also written as GREENFASTFLASHING — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Green fast flashing appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has entered a special intelligent-heating mode designed to automatically adjust temperatures based on how cold your home is, rather than a system error. (As reported on Vokera Compact 28 SE)
Pick your boiler brand for the Green fast flashing fix
Source
Information for the Green fast 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 7 July 2026