BoilerFaultCodes E016 High
Boiler Fault Code E016
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E016 appears across 1 boiler brand and 7 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 that it is getting too hot and has automatically shut itself down to prevent any damage to its internal parts. (As reported on Navien NCB 28 HE)
Pick your boiler brand for the E016 fix
Source
Information for the E016 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 27 April 2026