EC High

Boiler Fault Code EC

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code EC appears across 2 boiler brands and 2 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer has developed a fault and is unable to manage the heating system correctly. (As reported on Ideal Maximiser SE)

Pick your boiler brand for the EC fix

Ideal EC 1 model Worcester Bosch EC 1 model

Source

Information for the EC 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