BoilerFaultCodes E16 High
Boiler Fault Code E16
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code E16 appears across 14 boiler brands and 79 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 a fault with a secondary temperature sensor that monitors water returning to the unit, causing it to stop operating for safety. (As reported on Warmhaus Enerwa / Priwa)
Pick your boiler brand for the E16 fix
Alpha E16 28 models Ariston E16 2 models Biasi E16 5 models Halstead E16 6 models Heatline E16 4 models Ideal E16 6 models Johnson Starley E16 2 models Navien E16 6 models Potterton E16 2 models Remeha E16 8 models Saunier Duval E16 6 models Viessmann E16 1 model Vokera E16 2 models Warmhaus E16 1 model
Source
Information for the E16 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