BoilerFaultCodes E020 High
Boiler Fault Code E020
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E020 appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has shut down because it has reached an unsafe temperature, triggered by a safety sensor that prevents the unit from overheating. (As reported on Vokera Evolve)
Pick your boiler brand for the E020 fix
Source
Information for the E020 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