How much does it cost to fix boiler error code EE 1100?

Typical repair cost for the boiler EE 1100 fault is £120-220 including labour.

EE 1100 Medium

Boiler Fault Code EE 1100

Also written as EE1100 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE 1100 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 connection to the temperature sensor that monitors your underfloor heating, so it has stopped that specific heating circuit for safety. (As reported on Ariston E-Combi One 30)

Pick your boiler brand for the EE 1100 fix

Ariston EE 1100 4 models

Source

Information for the EE 1100 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