Goods Scene Troubleshooting
Dreame H12 – Brush roller is not installed
The appliance does not detect a correctly installed brush roller.
Issue meaning
What this issue means
The appliance does not detect a correctly installed brush roller.
Start here
First checks
Install the brush roller correctly and confirm that it is fully seated before restarting the appliance.
Inspection
Area to inspect
Brush roller installation and seating.
Goods Scene guidance
What to do next
Confirm the roller is present and seated correctly before treating the alert as a detection or electronics problem.
Practical guidance is kept separate from manufacturer wording.