BoilerFaultCodes Neon L6 High
Boiler Fault Code Neon L6
Also written as NEONL6 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Neon L6 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 has stopped working because it failed to light the burners or keep them running, and it needs a manual reset to try again. (As reported on Halstead Hero)
Pick your boiler brand for the Neon L6 fix
Source
Information for the Neon L6 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