How much does it cost to fix boiler error code Neon9?

Typical repair cost for the boiler Neon9 fault is £90-160 including labour.

Neon9 High

Boiler Fault Code Neon9

Also written as NEON9 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Neon9 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 detected that a temperature sensor is not working correctly, meaning it cannot accurately measure how hot the water is. (As reported on Potterton Performa System HE)

Pick your boiler brand for the Neon9 fix

Potterton Neon9 1 model

Source

Information for the Neon9 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