BoilerFaultCodes 468 High
Boiler Fault Code 468
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 468 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler's internal self-tuning system is detecting an unusual flame signal, which is preventing it from completing its safety checks and starting up correctly. (As reported on Viessmann Vitodens 100-W B1GA)
Pick your boiler brand for the 468 fix
Source
Information for the 468 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