BoilerFaultCodes 1073 High
Boiler Fault Code 1073
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 1073 appears across 1 boiler brand and 9 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has stopped working because it is unable to accurately measure the temperature of the water inside it, likely due to a loose wire or a faulty sensor connection. (As reported on Worcester Bosch Greenstar 8000 Life)
Pick your boiler brand for the 1073 fix
Source
Information for the 1073 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