I ran into a little "problem" this evening with my automated sprinkler system.. I have it hooked up to a switch and have it turned off. All of a sudden, the sprinklers turned on even though I hadn't changed anything. I looked at the control levers and all of them are off. I checked the actual valves themselves, and they were turned off as well. It was just then that I remembered I was in a middle of a thunderstorm and it was "raining", and the tanks were collecting the rain water. lol.