OVERHEAT NEON High

Boiler Fault Code OVERHEAT NEON

Also written as OVERHEATNEON — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code OVERHEAT NEON appears across 3 boiler brands and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has automatically shut itself down because it detected that it is getting too hot, likely due to a circulation problem. (As reported on Halstead Hero)

Pick your boiler brand for the OVERHEAT NEON fix

Baxi OVERHEAT NEON 2 models Halstead OVERHEAT NEON 1 model Ideal OVERHEAT NEON 1 model

Source

Information for the OVERHEAT 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 7 July 2026