Check for airflow, then clean the dust box and filter before blaming the fan.
Dreame's official L10s Ultra troubleshooting starts with the air outlet. If airflow is present, the fan is operating; Dreame then recommends cleaning the dust box and filter, increasing suction power in the app and running additional cleaning cycles. If there is no airflow and no fan sound, stop using the robot and contact support.
Find why the L10s Ultra is not vacuuming well
Can you feel airflow from the robot's air outlet while it is vacuuming?
This is Dreame's first official split between a working fan and a possible suction-system fault.
How to restore pickup performance
Empty the dust box
Remove accumulated debris and fine dust so the air path is not restricted.
Clean the filter correctly
Follow Dreame's maintenance instructions. If you rinse the dust box or filter, let them dry completely before reinstalling them.
Clear the main brush
Power the robot off, remove the brush guard and main brush, then remove wrapped hair and fibers from the roller and ends.
Inspect the visible intake
Remove compacted lint or pet hair from the user-accessible suction opening without pushing debris deeper inside.
Increase suction power
Dreame specifically recommends increasing suction in the app when airflow is present but vacuuming performance is poor.
Run a controlled test
Use a small amount of dry debris on hard flooring and run the robot over the area. If pickup remains weak after cleaning the air path, document the result for support.
When to stop DIY
If there is no airflow and no fan sound while the robot is vacuuming, Dreame advises stopping use and contacting after-sales support. Do not open the suction fan, motor or battery enclosure.
Use a different guide if vacuuming is not the main issue
Mop Pads Stay Dry
Use this if vacuum pickup is normal but mopping performance is poor because the pads are not getting wet.
Dock Not Working
Use this if the robot cleans normally but the base station is inactive or one of its main dock functions does not respond.