BoilerFaultCodes F.474 Low
Boiler Fault Code F.474
Also written as F474 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F.474 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's computer system has detected a temporary glitch in its internal clock or scheduling software, causing it to stop following your programmed heating and hot water times. (As reported on Viessmann Vitodens 100-W WB1A)
Pick your boiler brand for the F.474 fix
Source
Information for the F.474 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