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shivuns

Unregistered

1

Sunday, April 30th 2017, 12:52pm

One zone spraying even though the controller is in the off position.

I turned on the main water supply line to my sprinkler system with the controller set to the off position. I found that one zone was spraying even though the controller was in the off position. What could be cause/reason for this? I'd like to get it resolved before I really need to use the sprinklers.

mrfixit

Moderator

Posts: 2,307

Location: USA

2

Monday, May 1st 2017, 2:37am

Find the valve in question and adjust it or repair it. It's possible but not very likely it's the controller. Try disconnecting the wire from the valve and see if it shuts off. If not it's the valve itself. There could be debris keeping the valve from shutting off as well.

What model valve is it? Could you post a pic?

shivuns

Unregistered

3

Wednesday, May 10th 2017, 11:57am

One zone spraying even though the controller is in the off position.

They are Toro 264 series electric 1 inch valves with a Toro Greenskeeper control panel.

mrfixit

Moderator

Posts: 2,307

Location: USA

4

Wednesday, May 10th 2017, 12:29pm

The diaphragm on that valve will eventually get a hole in it. There's a good possibility that's the problem.
Could be the controller. One time I saw the Greenskeeper have a bad module and one station has power all the time no matter what. I swapped out the module and all was good.
There could be debris in side the valve keeping it from shutting off.
It's possible the plunger on that solenoid being stuck open. I've seen that particular solenoid rust inside quite a few times. If you take the solenoid off be very careful to not lose the spring under the plunger. If you drop it you may never find it again. When you take the solenoid off, note how the plunger looks. You don't want to put it in backwards. The pointy side goes in first towards the spring.

shivuns

Unregistered

5

Wednesday, May 10th 2017, 2:37pm

One zone spraying even though the controller is in the off position.

Correction, they are rain bird 100dv valves. I went off of the original quote that I received when they were installed, but they are not the Toro's that I originally thought. After some research, I matched the one's that I have to the Rain Bird 100DV. Pretty much the same procedure?

shivuns

Unregistered

6

Wednesday, May 10th 2017, 3:06pm

One zone spraying even though the controller is in the off position.

Thanks for your time.

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