How much does it cost to fix boiler error code F52?

Typical repair cost for the boiler F52 fault is £120-£200 including labour.

F52 High

Boiler Fault Code F52

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code F52 appears across 2 boiler brands and 10 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 a problem with the internal sensor that monitors water temperature or flow, meaning it cannot safely regulate how much it heats the water. (As reported on Ferroli Modena HE)

Pick your boiler brand for the F52 fix

Ferroli F52 4 models Johnson Starley F52 6 models

Source

Information for the F52 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