How much does it cost to fix boiler error code F30?

Typical repair cost for the boiler F30 fault is £120-200 including labour.

F30 High

Boiler Fault Code F30

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 31 August 2026

Fault code F30 appears across 2 boiler brands and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because a sensor that measures water temperature is providing an incorrect signal, causing the system to shut down for safety. (As reported on Viessmann Vitopend 100)

Pick your boiler brand for the F30 fix

Ferroli F30 1 model Viessmann F30 2 models

Source

Information for the F30 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 31 August 2026