BoilerFaultCodes Flashing Green Low
Boiler Fault Code Flashing Green
Also written as FLASHINGGREEN — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Flashing Green 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 is working correctly and is simply letting you know that it is currently heating your home or water as requested. (As reported on Potterton Prima 30B)
Pick your boiler brand for the Flashing Green fix
Source
Information for the Flashing Green 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