BoilerFaultCodes Neon SG1 Low
Boiler Fault Code Neon SG1
Also written as NEONSG1 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Neon SG1 appears across 1 boiler brand and 8 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is currently trying to light the flame, which is a normal part of its startup sequence. (As reported on Ideal Classic Slimline FF 330 360)
Pick your boiler brand for the Neon SG1 fix
Source
Information for the Neon SG1 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 7 July 2026