HF High

Boiler Fault Code HF

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code HF 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 heat pump's internal computer chips are not communicating correctly because their configuration settings do not match each other. (As reported on Ideal HP290)

Pick your boiler brand for the HF fix

Source

Information for the HF 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