How much does it cost to fix boiler error code Safety Thermostat Neon?

Typical repair cost for the boiler Safety Thermostat Neon fault is £100-250 including labour.

Safety Thermostat Neon High

Boiler Fault Code Safety Thermostat Neon

Also written as SAFETYTHERMOSTATNEON — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Safety Thermostat Neon appears across 2 boiler brands and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has switched itself off because it has detected that it is getting too hot inside. (As reported on Potterton Performa 24 Eco HE)

Pick your boiler brand for the Safety Thermostat Neon fix

Baxi Safety Thermostat Neon 6 models Potterton Safety Thermostat Neon 1 model

Source

Information for the Safety Thermostat 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 27 April 2026