BoilerFaultCodes 0L Low
Boiler Fault Code 0L
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 0L appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is currently trying to light the flame to start provide heating or hot water, which is a normal part of its startup sequence. (As reported on Ideal Maximiser SE)
Pick your boiler brand for the 0L fix
Source
Information for the 0L 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