Boiler Fault Code 2.4

Also written as 24 — same fault.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 31 August 2026

Fault code 2.4 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 is perfectly fine, it is simply pausing for a few minutes between heating cycles to save energy and prevent unnecessary wear. (As reported on Worcester Bosch ZB 7 27 HE)