BoilerFaultCodes HE High
Boiler Fault Code HE
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code HE appears across 1 boiler brand 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's main control computer has developed an internal electrical fault and can no longer manage the heating process safely. (As reported on Ideal Classic FF)
Pick your boiler brand for the HE fix
Source
Information for the HE 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