How much does it cost to fix boiler error code F39?

Typical repair cost for the boiler F39 fault is £90-180 including labour.

F39 High

Boiler Fault Code F39

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed 27 April 2026

Fault code F39 appears across 1 boiler brand and 14 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has sensed it is getting too hot too quickly and has shut down to protect its internal parts from damage. (As reported on Ferroli Modena HE)

Pick your boiler brand for the F39 fix

Ferroli F39 14 models

Source

Information for the F39 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