Why is sprinkler valve is stuck on

If you have a sprinkler valve that doesn’t turn off, or sticks on, the problem is most likely due to one or more of the following:
  1. The valve is failing and it’s not a controller problem
  2. The controller is just programmed incorrectly
  3. The controller is failing – causes strange behavior, seems to work, then does something unexpected. This is quite common
It shouldn’t be too hard to figure out what’s going on.  The first two are for you to investigate, the last one one I can solve foryou.
Item 1: Next time the water is “on” when it shouldn’t be, turn off power to the controller, or remove the back ribbon cable (there’s pictures of this on the rainDialDoctor website, see
This disconnects the controller from the valves, so if the valves stay on, it’s a valve problem, not a controller problem. Replace/repair the valve.
If you can’t wait for it to stick “on” again,
  • Try manually turning on a valve and then turn it off.  When you turn it off, the valve should go off within 10 seconds.  If not, the valve may be a problem.
  • Re-check the programming – all three schedules A,B and C.  See Item 2 below.
Item 2: Go to this you tube video to learn how to program it; it’s actually pretty easy and the video does a nice job.  It should apply to just about any model similar to the one shown.  If you want to call me when you’re in front of the controller, I can double check your settings for you.  I’m available on weekends and in the evenings – just let me know what times work for you.
Item 3: If the controller still seems to be causing problems, it’s probably just failing and needs to be repaired.  This is VERY COMMON and likely the cause. I do this all the time and the success rate is near perfect, cost and time are  reasonable.  Let me know and I’ll send you details; this is how I put a lot of food on the table these days.


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