How much does it cost to fix boiler error code 722?

Typical repair cost for the boiler 722 fault is £120-280 including labour.

722 Medium

Boiler Fault Code 722

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code 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 has detected that the secondary heating circuit is getting too hot, likely due to a circulation or sensor issue. (As reported on Ariston Alteas One)

Pick your boiler brand for the 722 fix

Ariston 722 1 model

Source

Information for the 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