BoilerFaultCodes S.14 Low
Boiler Fault Code S.14
Also written as S14 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code S.14 appears across 3 boiler brands and 68 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is not showing an error; it is simply displaying a status message to let you know that the burner is currently active and heating your water. (As reported on Glow-worm Ultracom 24cx 30cx)
Pick your boiler brand for the S.14 fix
Source
Information for the S.14 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