BoilerFaultCodes 80°C neon flashing High
Boiler Fault Code 80°C neon flashing
Also written as 80CNEONFLASHING — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 80°C neon flashing appears across 1 boiler brand and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is trying to start but keeps cutting out immediately after ignition, which means it cannot sustain a flame to keep your home warm. (As reported on Potterton Performa 24i HE)
Pick your boiler brand for the 80°C neon flashing fix
Source
Information for the 80°C neon flashing 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