How much does it cost to fix boiler error code EE 3300?

Typical repair cost for the boiler EE 3300 fault is £120-200 including labour.

EE 3300 Low

Boiler Fault Code EE 3300

Also written as EE3300 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code EE 3300 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 struggling to detect the temperature outside, which may cause it to run less efficiently than usual. (As reported on Ariston E-Combi One 30)

Pick your boiler brand for the EE 3300 fix

Ariston EE 3300 4 models

Source

Information for the EE 3300 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