E19 High

Boiler Fault Code E19

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E19 appears across 4 boiler brands and 6 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 flow of water, which means it cannot tell if the taps are running or if it needs to heat your home. (As reported on Warmhaus Enerwa)

Pick your boiler brand for the E19 fix

Biasi E19 3 models Keston E19 1 model Vokera E19 1 model Warmhaus E19 1 model

Source

Information for the E19 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