How much does it cost to fix boiler error code EE7744?

Typical repair cost for the boiler EE7744 fault is £90-160 including labour.

EE7744 High

Boiler Fault Code EE7744

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE7744 appears across 1 boiler brand and 3 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 one of its internal sensors is reporting an electrical fault and can no longer monitor the temperature of the water coming back from your radiators. (As reported on Ariston Genus 27)

Pick your boiler brand for the EE7744 fix

Ariston EE7744 3 models

Source

Information for the EE7744 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