How much does it cost to fix boiler error code Neon 1 NOT lit?

Typical repair cost for the boiler Neon 1 NOT lit fault is £80-180 including labour.

Neon 1 NOT lit High

Boiler Fault Code Neon 1 NOT lit

Also written as NEON1NOTLIT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code Neon 1 NOT lit appears across 3 boiler brands 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 appears to have no power reaching it, which is likely caused by an external electrical issue or a blown fuse inside the unit. (As reported on Glow-worm Space Saver 30 40 50)

Pick your boiler brand for the Neon 1 NOT lit fix

Glow-worm Neon 1 NOT lit 3 models Ikon Neon 1 NOT lit 1 model Protherm Neon 1 NOT lit 1 model

Source

Information for the Neon 1 NOT lit 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 31 August 2026