There could be a number of reasons why your robot is missing some areas of the pool.
- First please be sure to place the robot into the shallow end of the pool.
Is the robot climbing the wall of the pool all the way to the water line?
If not, the filter baskets may be clogged.
- Try running the robot without the filter baskets for 1-2 minutes and observe if the robot covers the entire pool.
The robot may need an additional float. Or, the scrubbing brushes may need to be replaced.