BoilerFaultCodes F.354 High
Boiler Fault Code F.354
Also written as F354 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.354 appears across 1 boiler brand and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is having difficulty accurately controlling the flow of gas needed to burn fuel efficiently, which has caused it to stop working for your safety. (As reported on Viessmann Vitodens 100-W WB1A)
Pick your boiler brand for the F.354 fix
Source
Information for the F.354 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