How much does it cost to fix boiler error code EE 0066?

Typical repair cost for the boiler EE 0066 fault is £120-180 including labour.

EE 0066 High

Boiler Fault Code EE 0066

Also written as EE0066 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE 0066 appears across 1 boiler brand and 4 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 the signal from the sensor that monitors the water temperature, causing it to stop heating your home to prevent potential overheating. (As reported on Ariston E-Combi One 30)

Pick your boiler brand for the EE 0066 fix

Ariston EE 0066 4 models

Source

Information for the EE 0066 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