BoilerFaultCodes F.68 High
Boiler Fault Code F.68
Also written as F68 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.68 appears across 1 boiler brand and 33 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is struggling to keep a steady flame alight because the gas supply is inconsistent or contains air pockets. (As reported on Vaillant ecoTEC Pro / ecoTEC Plus)
Pick your boiler brand for the F.68 fix
Source
Information for the F.68 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