E8 High

Boiler Fault Code E8

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E8 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 has stopped working because water is not moving through the system properly or the pressure is too low. (As reported on Ideal HP290)

Pick your boiler brand for the E8 fix

Ideal E8 1 model Remeha E8 11 models

Source

Information for the E8 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