BoilerFaultCodes F.057 High
Boiler Fault Code F.057
Also written as F057 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.057 appears across 1 boiler brand 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's electronic brain can no longer safely manage the fuel and air mixture required to burn gas, meaning it has shut down completely to prevent an unsafe condition. (As reported on Vaillant ecoTEC Plus 832)
Pick your boiler brand for the F.057 fix
Source
Information for the F.057 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