BoilerFaultCodes F08 High
Boiler Fault Code F08
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code F08 appears across 2 boiler brands and 4 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler has sensed that parts of the internal system have become too hot, causing it to shut down automatically to prevent damage. (As reported on Ferroli Bluehelix Tech)
Pick your boiler brand for the F08 fix
Source
Information for the F08 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