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Old 04-01-2012, 10:58 AM   #1
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one zone in sprinkler system dead


The other 3 zones work, but when I manually switch it to the 4th zone, no water comes out of the sprinklers. In the proces of digging up the burried/sand/root overgrown valve/wiring......

Heard it could be the solenoid, but could it be the solenoid if 3 zones work?

Thanks

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Old 04-01-2012, 11:24 AM   #2
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one zone in sprinkler system dead


Each zone valve has its own solenoid. 1 can go bad and has nothing to do with the others. When you find the valve, test for 24 volts at the valve wires to prove toward the valve or back to the controller.

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Old 04-01-2012, 02:37 PM   #3
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one zone in sprinkler system dead


Thanks, niles. I checked and got 24 volts at the valve, on the wire color coded for the disabled zone. So, we have voltage. Could I now try to move the solenoid by hand? Would that prove anything?
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Old 04-01-2012, 03:10 PM   #4
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one zone in sprinkler system dead


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Thanks, niles. I checked and got 24 volts at the valve, on the wire color coded for the disabled zone. So, we have voltage. Could I now try to move the solenoid by hand? Would that prove anything?
you didn't say what kind of valve. If voltage their. Now take off 1 wire and use the ohm scale and see it the solenoid winding is open. If you get a reading like when you short the two leed's togother than the winding is good now if no short reading than winding is open. Best to just get a new solenoid. What you can do is change that solenoid with a good one. I know it will work so just get a new solinoid and be done .
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Old 04-01-2012, 04:05 PM   #5
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one zone in sprinkler system dead


Geez, Del, sounds like your advice is the right way to go, instead of analyzing it to death. The thing is over 20 yrs old. Just looked, and the cover says "Carson Industries". Gonna take a picture of it within minutes, if it helps.......
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Old 04-01-2012, 04:18 PM   #6
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one zone in sprinkler system dead


Carson industries is the company that made the valve box, not the valve/solenoid inside.

Rainbird, Orbit, Irritol are the big names
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Old 04-01-2012, 04:20 PM   #7
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one zone in sprinkler system dead


Replacing it can be a pretty extensive job. Yoy have to dig it back several feet on each side of the valve box.

Turn the top of the valve to see if the water flows, I bet it will.

Get a replacement solenoid for your brand.
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Old 04-01-2012, 04:29 PM   #8
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one zone in sprinkler system dead


heres the picture:
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Old 04-01-2012, 04:37 PM   #9
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one zone in sprinkler system dead


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Each zone valve has its own solenoid. 1 can go bad and has nothing to do with the others. When you find the valve, test for 24 volts at the valve wires to prove toward the valve or back to the controller.
Yes And good news is Solenoid actuactors for irrigation are relatively cheap. Your valve should have a little hex nut thing on it. If you twist it open, the valve should open and you will be able to water without the timer.

If a squirrel or some dumber animal dug down and chewed wiring to the actuator, you are temporarily screwed. If you can measure nothing with your tester you should pull and replace the wire run. Something chewed it.
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Old 04-01-2012, 04:43 PM   #10
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one zone in sprinkler system dead


Hmmm, kinda confused- "expensive" job and at the same time "cheap" to replace. Which is it(?)

Either way, I ubderstand on testing it- Lemme go out there right now, and try turning the 'cross" to get that zone to kick in, if thats what yous are suggesting........
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Old 04-01-2012, 04:45 PM   #11
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one zone in sprinkler system dead


Oh, before I do that- timer box says "Richdel". Is that the valve brand?
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Old 04-01-2012, 04:53 PM   #12
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one zone in sprinkler system dead


Geez, sorry guys, but my problem is I dont understand what is what. What is the valve in my picture, and what is the solenoid in my picture. Im shooting in the dark now.....
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Old 04-02-2012, 04:52 AM   #13
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one zone in sprinkler system dead


The solenoid acuator is that black cylindrical thing with wires coming out the top. Those wires should go back to the timer. As mentioned, your electrical tester should be reading close to decent voltage to the actuator. The actuator could have bought the farm though. The solenoid actuator should come loose easily. Just unthread it. You might want to turn the cutoff valve to the system off but you should not have to.

What is that severed green wire and the splice about, by the way? I actually cannot tell from the photo about how the solenoid is wired. Uncapped wires, even for low voltage, make me cringe a bit. Maybe a real sparky will chime in but I am seeing a lot of wiring for an irrigation valve. Looks some may be legacy and dead? But you say you are getting voltage delivered to the solenoid?

The handle thing is the flow control part of the valve.

See the little hex nut across from the solenoid? It is the manual override for the valve. If you open it you bypass the solenoid and the valve should open without you having to run back to the the timer to make adjustments.

Just a thought to pass on. It looks like that valve has some miles on it. Since you are thinking about it anyhow, you might want to invest chimp change in a kit for it to replace o-rings and other rubber type components. I haven't had to rebuild a valve in awhile but I should think the kits would not be more than $10 retail?



Last edited by user1007; 04-02-2012 at 05:47 AM. Reason: Added Photo Call Outs
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Old 04-02-2012, 05:39 AM   #14
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one zone in sprinkler system dead


Quote:
Originally Posted by del schisler View Post
you didn't say what kind of valve. If voltage their. Now take off 1 wire and use the ohm scale and see it the solenoid winding is open. If you get a reading like when you short the two leed's togother than the winding is good now if no short reading than winding is open. Best to just get a new solenoid. What you can do is change that solenoid with a good one. I know it will work so just get a new solinoid and be done .
As mentioned before, new solenoid actuators are not too expensive. Careful not to strip threads removing and reinstalling or you will have to dig and replace that valve.
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Old 04-02-2012, 07:14 AM   #15
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one zone in sprinkler system dead


Man, SD, BIG thanks! Now, I got something to go on! Will tackle this when I get home later.......

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