BoilerFaultCodes LC Medium
Boiler Fault Code LC
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code LC appears across 3 boiler brands and 13 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has shut itself down as a safety precaution because it has been manually restarted too many times within a short period. (As reported on Ideal Logic+ System)
Pick your boiler brand for the LC fix
Source
Information for the LC 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 7 July 2026