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

Typical repair cost for the boiler Red LED illuminated fault is £90-180 including labour.

Red LED illuminated High

Boiler Fault Code Red LED illuminated

Also written as REDLEDILLUMINATED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code Red LED illuminated appears across 3 boiler brands and 6 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has become too hot and has automatically shut itself down as a safety precaution. (As reported on Potterton Kingfisher MF 40-100)

Pick your boiler brand for the Red LED illuminated fix

Halstead Red LED illuminated 1 model Potterton Red LED illuminated 3 models Vokera Red LED illuminated 2 models

Source

Information for the Red LED 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 31 August 2026