S.92 Low

Boiler Fault Code S.92

Also written as S92 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code S.92 appears across 2 boiler brands and 12 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 running a routine internal check to ensure there is enough water flowing through the system to operate safely. (As reported on Vaillant ecoTEC Pro)

Pick your boiler brand for the S.92 fix

Heatline S.92 8 models Vaillant S.92 4 models

Source

Information for the S.92 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