Low neon light High

Boiler Fault Code Low neon light

Also written as LOWNEONLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Low neon light 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 struggling to maintain a strong flame, which is why it keeps turning off or failing to heat up properly. (As reported on Glow-worm EnergySaver)

Pick your boiler brand for the Low neon light fix

Glow-worm Low neon light 1 model

Source

Information for the Low neon 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