How much does it cost to fix boiler error code 330?

Typical repair cost for the boiler 330 fault is £120-250 including labour.

330 Medium

Boiler Fault Code 330

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 330 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 signal from an external temperature sensor, which means it cannot correctly calculate how much heat it needs to provide. (As reported on ECA FELiS FL 50 HM)

Pick your boiler brand for the 330 fix

ECA 330 1 model

Source

Information for the 330 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 7 July 2026