If your RoboVac’s suction became weak with time being, you can follow the tips below for troubleshooting:

1. Check if any obstructions are blocking the suction inlet. 
2. Empty the dust collector and clean the filters with a vacuum cleaner or a cleaning brush.
3. Replace the filter/brush to see if the suction becomes stronger.
4. Check if the filters are wet due to water or other liquids on the floor. Air-dry the filters completely before use.

If you are good at handskill, you can follow the video to check if any debris get stuck inside the suction fan:

Moving the debris stuck in the suction fans

If you need any further assistance, please contact us.