BoilerFaultCodes 94 H......F..... High
Boiler Fault Code 94 H......F.....
Also written as 94HF — same fault.
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 94 H......F..... appears across 1 boiler brand and 3 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is struggling to detect the flame needed to heat your water, which is causing the system to shut down for safety. (As reported on Ideal Esprit HE)
Pick your boiler brand for the 94 H......F..... fix
Source
Information for the 94 H......F..... 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