Well I was at a customers house starting up there system. Everyhting was fine. I was gone no more then 2 minutes away from the house I got a call. she said I hear water running under the deck (i'm think there is NOT any irrigaton pipe under the deck). I told her I will be there in a 2 minutes. I walk on the deck and listen. And low and behold it was her attic exhaust running. I told her I will send her a bill. Gotta love it.