How much does it cost to fix boiler error code E56?

Typical repair cost for the boiler E56 fault is £120-200 including labour.

E56 High

Boiler Fault Code E56

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code E56 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 lost its ability to measure the temperature of the water circulating through your radiators, so it has safely shut down to prevent overheating. (As reported on Ariston Genus 24 MFFI)

Pick your boiler brand for the E56 fix

Ariston E56 3 models

Source

Information for the E56 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