BoilerFaultCodes DM029 Low
Boiler Fault Code DM029
Reviewed by the BoilerFaultCodes Editorial Team Last reviewed
Fault code DM029 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 reporting that the hot water temperature has been adjusted via the control dial, and this is a normal status notification rather than a fault. (As reported on Baxi 400 Combi 2)
Pick your boiler brand for the DM029 fix
Source
Information for the DM029 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