Green light Low

Boiler Fault Code Green light

Also written as GREENLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Green light appears across 3 boiler brands and 7 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 indicating that the internal burner is lit and ready to provide heating or hot water. (As reported on Glow-worm Glow-worm Fuelsaver 56 3E)

Pick your boiler brand for the Green light fix

Baxi Green light 4 models Glow-worm Green light 2 models Worcester Bosch Green light 1 model

Source

Information for the Green light 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