DM009 Low

Baxi DM009 Fault Code

The Baxi DM009 fault code means: your boiler is currently in a setup or holiday mode rather than standard heating operation.. 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: Primary operating mode (0: Programming, 1: Manual, 2: Antifreeze/Holiday)

DIY fix possible

Locate the mode selector or dial on the front control panel.Switch the setting from 'Programming' or 'Holiday' back to the 'Winter' or 'Summer' operating position.Check if the display returns to normal and the boiler fires up.

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Baxi models that show the DM009 fault code

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

Source

Baxi DM009 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