How much does it cost to fix boiler error code EE 3311?

Typical repair cost for the boiler EE 3311 fault is £100-£180 including labour.

EE 3311 Low

Boiler Fault Code EE 3311

Also written as EE3311 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE 3311 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 is receiving an incorrect signal from its external temperature sensor, which usually means the wiring connected to the small box on your outside wall has been damaged or has become loose. (As reported on Ariston E-Combi One 30)

Pick your boiler brand for the EE 3311 fix

Ariston EE 3311 4 models

Source

Information for the EE 3311 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