BoilerFaultCodes Green neon Low
Boiler Fault Code Green neon
Also written as GREENNEON — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Green neon appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is operating exactly as it should and the green light indicates the burner is currently lit and heating your water. (As reported on Potterton Ultra 2 30 DV)
Pick your boiler brand for the Green neon fix
Source
Information for the Green neon 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