BoilerFaultCodes L.144 High
Boiler Fault Code L.144
Also written as L144 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code L.144 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 struggling to detect the flame correctly, so it has turned itself off to stay safe and prevent gas from building up. (As reported on Vaillant ecoTEC plus)
Pick your boiler brand for the L.144 fix
Source
Information for the L.144 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