Ed High

Boiler Fault Code Ed

Also written as ED — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code Ed 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 heat pump has stopped working because a sensor that monitors the temperature of the water returning to the outdoor unit has failed or detected an error. (As reported on Ideal HP290)

Pick your boiler brand for the Ed fix

Ideal Ed 1 model Worcester Bosch Ed 1 model

Source

Information for the Ed 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