E08 High

Boiler Fault Code E08

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code E08 appears across 11 boiler brands and 83 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler has stopped working because one of its internal temperature sensors has developed a fault and can no longer monitor the water returning to the unit. (As reported on Vokera Mynute Vhe)

Pick your boiler brand for the E08 fix

Alpha E08 19 models Ariston E08 10 models Biasi E08 12 models Ferroli E08 1 model Johnson Starley E08 8 models Keston E08 9 models Potterton E08 1 model Ravenheat E08 9 models Remeha E08 7 models Viessmann E08 1 model Vokera E08 6 models

Source

Information for the E08 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