Boiler Fault Code GREEN blinking

Also written as GREENBLINKING — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code GREEN blinking 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 is struggling to light itself correctly because the internal firing mechanism is becoming partially blocked or worn out. (As reported on Grant Vortex Eco)