Boiler Fault Code Neon 10

Also written as NEON10 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code Neon 10 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 is struggling to accurately measure the temperature of your hot water, which usually means your taps will only run cold or or at a very inconsistent temperature. (As reported on Baxi Bahama 80e / 105e)