Red LED High

Boiler Fault Code Red LED

Also written as REDLED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Red LED appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because it failed to start or got too hot, and it now needs to be manually restarted to begin operating again. (As reported on Chaffoteaux 80/100)

Pick your boiler brand for the Red LED fix

Source

Information for the Red LED 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