BoilerFaultCodes S.08 Low
Boiler Fault Code S.08
Also written as S08 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code S.08 appears across 3 boiler brands and 51 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is taking a short, planned break to prevent the system from turning on and off too frequently, which protects the internal components and saves energy. (As reported on Glow-worm Ultracom 2 SXI)
Pick your boiler brand for the S.08 fix
Source
Information for the S.08 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