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

Typical repair cost for the boiler Red neon light fault is £150-300 including labour.

Red neon light High

Boiler Fault Code Red neon light

Also written as REDNEONLIGHT — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code Red neon light 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 shut down for safety reasons. (As reported on Grant Vortex Combi 70)

Pick your boiler brand for the Red neon light fix

Grant Red neon light 1 model

Source

Information for the Red neon light 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