How much does it cost to fix boiler error code Red neon illuminated?

Typical repair cost for the boiler Red neon illuminated fault is £120-250 including labour.

Red neon illuminated High

Boiler Fault Code Red neon illuminated

Also written as REDNEONILLUMINATED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Red neon illuminated 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 it is getting too hot and has automatically switched itself off to prevent damage. (As reported on Baxi Solo 3 40 PF)

Pick your boiler brand for the Red neon illuminated fix

Baxi Red neon illuminated 1 model

Source

Information for the Red neon illuminated 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