Why does Pentair Water Dispenser backwash at the wrong rate?
- PPatrick ByrdAug 19, 2025
If your Pentair Water Dispenser backwashes or purges at an excessively low or high rate, it could be due to a couple of reasons. The incorrect drain controller might be in use, so replace it with one of the correct size. Alternatively, foreign matter might be affecting the valve operation, so remove the drain control and clean the ball and seat.