BoilerFaultCodes L06 High
Boiler Fault Code L06
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code L06 appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is detecting a flame even though the gas valve should be closed, which is a safety precaution that stops the boiler from running. (As reported on Ideal Logic Code Combi ESP1)
Pick your boiler brand for the L06 fix
Source
Information for the L06 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