BoilerFaultCodes CM210 Low
Boiler Fault Code CM210
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code CM210 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 simply displaying the current temperature from an outdoor sensor and is not indicating a fault with your heating system. (As reported on Baxi 400 Combi 2)
Pick your boiler brand for the CM210 fix
Source
Information for the CM210 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