E30 High

Boiler Fault Code E30

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E30 appears across 4 boiler brands and 7 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has sensed that the water is heating up too quickly or unevenly, causing it to shut down for safety. (As reported on Vokera Pinnacle)

Pick your boiler brand for the E30 fix

Ariston E30 2 models Chaffoteaux E30 1 model Keston E30 3 models Vokera E30 1 model

Source

Information for the E30 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