BoilerFaultCodes F.088 High
Boiler Fault Code F.088
Also written as F088 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.088 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 has lost its electrical connection to the internal valve that controls gas flow, meaning it cannot safely ignite to provide heating or hot water. (As reported on Vaillant ecoTEC Plus 832)
Pick your boiler brand for the F.088 fix
Source
Information for the F.088 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