1.Is dry filter installed correctly?
☆Please make sure that the dry filter is installed properly

2.Confirm whether there is dirt or debris in the channel or on the brush roller.
☆Please clean the brush roller and channel.

3.Examine the scraper and see if there is dirt or debris on the scraper. Check if the scraper is deformed.
☆Clean debris & dirt in the scraper with cleaning tool.

4.Confirm whether brush roller cover installed correctly?
☆Please install brush roller cover correctly.

5.Has the problem been resolved?
☆No.Please contact Tineco customer service.