BoilerFaultCodes 1074 W High
Boiler Fault Code 1074 W
Also written as 1074W — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 1074 W appears across 1 boiler brand and 11 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 its internal thermometer, meaning it cannot safely monitor the temperature of the water circulating through your radiators. (As reported on Worcester Bosch Greenstar 8000 Life/Style)
Pick your boiler brand for the 1074 W fix
Source
Information for the 1074 W 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