711 High
Boiler Fault Code 711
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 711 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 track of the temperature of the water coming back from your radiators, which may stop your heating from working efficiently or starting up at all. (As reported on Ariston Alteas One)
Pick your boiler brand for the 711 fix
Source
Information for the 711 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