BoilerFaultCodes N.194 High
Boiler Fault Code N.194
Also written as N194 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code N.194 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 detected an internal electrical fault preventing the main control system from powering up correctly, which means your heating and hot water will not work. (As reported on Vaillant ecoTEC Plus 832)
Pick your boiler brand for the N.194 fix
Source
Information for the N.194 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