BoilerFaultCodes E00-722 High
Boiler Fault Code E00-722
Also written as E00722 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E00-722 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's main control computer has developed an internal electrical fault and can no longer safely operate the system. (As reported on Worcester Bosch 24/28CDi II RSF)
Pick your boiler brand for the E00-722 fix
Source
Information for the E00-722 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