Boiler Fault Code S.07

Also written as S07 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 27 April 2026

Fault code S.07 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 briefly running the internal pump after the heating has switched off to cool down the internal components, which is a normal operation and typically not a fault. (As reported on Glow-worm Flexicom cx)