Search results

  1. S

    Polaris 3900 gets stopped dead at a wall

    Polaris 3900 (dedicated pump)starts up and rolls until it hits wall. Stops then just sits- no wheels turning. Replaced backup valve to no avail. as well as the pressure relief valve by the wall. Do I need to take it apart to diagnose? Hubby just wants to replace, I don’t want to give up.