DM019 Low

Baxi DM019 Fault Code

The Baxi DM019 fault code means: your boiler is simply showing its current hot water operational status, rather than indicating a fault.. It appears on 1 Baxi model in our database.

Monitor it

This is a minor fault. Keep an eye on it and mention it at your next annual boiler service. Reset the boiler and see if it clears.

Technical description: DHW mode active (0: OFF (antifreeze), 1: Reduced, 2: Comfort, 3: Antilegionella

DIY fix possible

Check your boiler display manual to confirm this is a status code rather than an errorNo physical intervention is requiredIf your hot water is working normally, you can safely ignore this display

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Baxi models that show the DM019 fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Baxi DM019 fault code information on this page is sourced and cross-checked against the official Baxi service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026