024 High
Boiler Fault Code 024
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code 024 appears across 1 boiler brand and 1 models. The exact meaning varies by manufacturer — pick your boiler brand below to see the model-specific fix.
Most common meaning Your boiler is confused because two temperature sensors have been mixed up or are misreading the heat levels, preventing it from starting safely. (As reported on Ideal Maximiser SE)
Pick your boiler brand for the 024 fix
Source
Information for the 024 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