How much does it cost to fix boiler error code EE0066?

Typical repair cost for the boiler EE0066 fault is £120-200 including labour.

EE0066 High

Boiler Fault Code EE0066

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE0066 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 the ability to read the temperature of the water circulating through your radiators, so it has shut down to prevent overheating. (As reported on Ariston Clas One)

Pick your boiler brand for the EE0066 fix

Ariston EE0066 1 model

Source

Information for the EE0066 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