BoilerFaultCodes N.319 Medium
Boiler Fault Code N.319
Also written as N319 — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code N.319 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 is struggling to circulate water effectively because an internal safety valve is stuck or blocked, which may cause it to turn itself off to prevent overheating. (As reported on Vaillant ecoTEC plus)
Pick your boiler brand for the N.319 fix
Source
Information for the N.319 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