BoilerFaultCodes E2233 High
Boiler Fault Code E2233
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E2233 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 has lost communication with the internal thermometer that monitors water temperature, causing the system to shut down for safety. (As reported on Worcester Bosch CDi Classic)
Pick your boiler brand for the E2233 fix
Source
Information for the E2233 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