FE High

Boiler Fault Code FE

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code FE appears across 2 boiler brands and 5 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.

Most common meaning Your boiler's internal computer has encountered a critical error or is having trouble communicating with its electronic security card, causing the system to shut down for safety. (As reported on Viessmann Vitodens 050-W)

Pick your boiler brand for the FE fix

Alpha FE 2 models Viessmann FE 3 models

Source

Information for the FE 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