How much does it cost to fix boiler error code 430?

Typical repair cost for the boiler 430 fault is £80-150 including labour.

430 High

Boiler Fault Code 430

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 7 July 2026

Fault code 430 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 detected that the water pressure inside the system has dropped too low to operate safely and effectively. (As reported on ECA FELiS FL 50 HM)

Pick your boiler brand for the 430 fix

ECA 430 1 model

Source

Information for the 430 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