Red L.E.D. I High
Boiler Fault Code Red L.E.D. I
Also written as REDLEDI — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code Red L.E.D. I appears across 1 boiler brand and 5 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 light the flame needed to heat your water and home. (As reported on Ariston E-Combi One 30)
Pick your boiler brand for the Red L.E.D. I fix
Source
Information for the Red L.E.D. I 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