Zone won't shut off

Discussion in 'Irrigation / Sprinkler Forum' started by seedman76, May 23, 2020.

  1. seedman76

    seedman76 New Member

    Joined:
    May 23, 2020
    Location:
    Minnesota
    Last fall I had a irrigation system that operated perfectly. In November I did a drainage project in my backyard and in the process cut 3 irrigation lines and my 18/8 multi-color low voltage wiring. I repaired the 3 lines. I also purchased a short section of 18/8 wire from my irrigation dealer and spliced it in where I severed the wiring. I used Orbit wire nuts and silicon grease caps. I wired everything up matching each color across the splices. I thought I was in business until I discovered that on my 8 zone system, zone 4 turns on whenever any other zone is on and it won't turn off until I shut the system off at the controller. I've got a pond pump if that matters. While troubleshooting, I disconnected all the wiring for each zone at the Weathermatic SL800 controller. The only wires connected were the red/white wires which come from my Irritrol pump control box and tell the pump to turn on. If with all zones disconnected zone 4 still ran. Somehow it's getting power/water to it even when NONE of the wires for any zone are connected at my controller. I'm at a loss for where to turn and any help would be greatly appreciated. Thank you.
     
  2. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    Check the solenoid at the valve. Be sure it is fully tight clockwise. A quarter turn to half, counter clock wise will allow water to flow. It might have frozen this last winter and it's damaged. A bleed valve, if it has one will also do the same.
     
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  4. seedman76

    seedman76 New Member

    Joined:
    May 23, 2020
    Location:
    Minnesota
    Just wanted to give an update and say "thank you" for your help and suggestions on my irrigation issue. I was able to resolve it over the weekend. Turns out it wasn't an electrical issue. Fortunately before I spent much time troubleshooting the electrical components I took the advice to check the valves. I took the solenoid off of zone 4 and verified it was operating by having my wife turn zone 4 on/off at the controller and watching the bottom of the solenoid move up/down. Next I removed the valve and took all the components apart. I discovered a 1/4" diameter rock below the valve laying in the horizontal inlet pipe that brings water to the valve. I removed the rock with needle nose pliers, cleaned the valve, reassembled everything and gave it a try. Presto, everything worked as it should. What a relief...I was elated...thanks again for your help.
     
  5. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    The stone could have been in there since day one or when a sprinkler head was changed and the stone fell in. Alway flush the pipes after removing a sprinkler or repairing a pipe.

    I once had a small piece of steel, from the drill head when the well was drilled driving me nuts. Several times I removed the check valve since the pump was losing prime and nothing found but I could hear, at times, the water rushing back down the well. I finally changed the check valve and if I be damned it did it again, This is going on for two weeks. The last time I removed the check valve, there it was, the piece of steel wedge in the check valve. It was going up and down the pipe a each time I would run the pump or taking the check valve out it would dislodge and fall down the well. :confused:
     
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