1. Check to make sure the valve that feeds the Venturi is open.
  2. Turn off the valve at the equipment to the Venturi and remove the Venturi from the skimmer and make sure it is not plugged with debris.*
  3. Check to make sure the weir is still in place in the skimmer and moving freely.
  4. Make sure the water level is not too low in the pool for the skimmer to work properly.
  5. Make sure the basket is not full of debris.