CP490 Low

Boiler Fault Code CP490

Reviewed by the BoilerFaultCodes Editorial Team Last reviewed

Fault code CP490 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 currently running a special programme designed to dry out new floor screed, which limits the temperature of your heating system. (As reported on Baxi 400 Combi 2)

Pick your boiler brand for the CP490 fix

Baxi CP490 1 model

Source

Information for the CP490 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