| 1.Wether pre-filter is installed correctly? ☆Please make sure that the pre-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.Whether brush roller have been worn? ☆Please replace brush roller. |
| 4.Examine whether the floater, filter and pre-filter is clogged or not? ☆Clean the floater, and wash filter and pre-filter with water. And make sure filters are completely dry before reinstalling. |
| 5.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. |
