I am using an automatic sprinkler valve to run my vegetable garden drip system. I am using a pressure reducing low flow 9 valve manifold off of a 3/4" pvc line plumbed to the garden bed. I verified the position of all the manual valves to be in the closed position. On the garden zone there is no difference in the on or off position. It just runs and runs. Any help would be great. Thanks in advance.