BoilerFaultCodes CM280 Low
Boiler Fault Code CM280
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code CM280 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 This code is an internal status message showing the temperature the boiler is currently aiming for, rather than a sign that something is broken. (As reported on Baxi 400 Combi 2)
Pick your boiler brand for the CM280 fix
Source
Information for the CM280 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