VF Low

Boiler Fault Code VF

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

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

Most common meaning Your boiler is performing a routine self-cleaning process to remove air bubbles from the system and is not actually reporting a hardware fault. (As reported on Ideal Logic Combi C24 C30 C35)

Pick your boiler brand for the VF fix

Ideal VF 1 model Zanussi VF 1 model

Source

Information for the VF 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