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Some Zones of Sprinkler System Don't Work

Discussion in 'Homeowner Assistance Forum' started by ptc11, Jul 29, 2006.

  1. ptc11

    ptc11 LawnSite Member
    Messages: 1

    I have several zones of my sprinkler system that are not working. Some zones don't pop any heads up and some pop up very little. This is an older system and has worked every year for the past 5 years. Just this past year it has started acting this way. I hear water running through the valves which appear to be working and are being controlled from the indoor controller I have, but I can't tell if water is actually getting to the heads of some zones. I don't see any puddling of water in the yard so I can't definitely say that water is even getting to the heads. I guess my question is, is it safe to assume that if when I turn a zone on from the controller and I hear water running through the valve, that the valve is working properly? Is there any tests I can run on the valves to see if they are working? I just find it hard to believe that I have a leak at a head or something like that when I have an entire zone that shows no sign of life at the heads, but yet I hear water running at the valve. I mean am I correct to suspect that the problem is closer to the valve than out in the yard near the heads?
  2. ed2hess

    ed2hess LawnSite Fanatic
    Messages: 14,449

    Can't assume the valve is fully open just because you hear some water running. Some valve have an adjustment knob on them. It sounds like you may have a head off somewhere that is taking down the entire line. Sometimes you have to let it run for 15 minutes or so to find a leak. It could be cracked pipe somewhere. One important thing is to try to locate as many valves as you can and keep grass off them. It is costly to have to use a valve finder.
  3. re151731

    re151731 LawnSite Member
    Messages: 32

    Try opening the zone valve manually to determine if all heads extend.On the valve there is a manual control lever.
  4. upidstay

    upidstay LawnSite Bronze Member
    from CT
    Messages: 1,575

    Call an irrigation company. Try the original company that installes it.

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