easy fuse job, not

Discussion in 'Irrigation' started by mudter, May 31, 2008.

  1. mudter

    mudter LawnSite Member
    from texas
    Messages: 15

    Looking for some help in trouble shooting a service call for a blown 1.5 fuse, the lady has already opened the controller (esp-8) but it did not look that disturbed. I replaced the fuse set the clock and manually start zone 1, zone 1 starts. I manually start zone two, it starts without an issue. I manually start zone 3 and zone 1 starts then the fuse pops. Replace fuse and start over, I make it to zone 5 and zone 2 starts just before the fuse pops again. I want to eliminate the issue so I disconnect the common and zone 1; I connect my 24 and get an open green light but no water. I try zone two, green light no water. I try all 7 zones and no water. Puzzled I looked at the controller again and there was not a wire for a mv. I connect the controller again and go back to the same process new fuse, zone 1 starts, blah, blah, fuse pops. Even more puzzled until I notice a stripped wire in the multi strand when three others are not striped. I connect the 24 to the open line and the common and get an open red light. This starts to eliminate a mv, correct? So why would the valves not open when the 24 was giving me a green light and the zones would open by the controller with out a mv connected? The clock output test was good on all 7 zones. Could there be a short in the multi strand and if so should it not show up as a short red light on the 24??????
     
  2. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 49,261

    Resistance measurements?
     
  3. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 22,598

    Ditto, OHM it out first, you get too deep into head scratching otherwise.
     
  4. AI Inc

    AI Inc LawnSite Fanatic
    Messages: 25,908

    Do you know if system has a master valve? If not connect common to 1 of the 24 v. Touch other wires to other 24 v 1 at a time. If zones dont come up its a wire / solonoid issue. If they come up its a clock issue. If it has an MV connect that to 24v that you are touching wires to first.
     
  5. FIMCO-MEISTER

    FIMCO-MEISTER Banned
    Messages: 18,668

    Did this post give anybody tired head beside me?
     
  6. Mike Leary

    Mike Leary LawnSite Fanatic
    Messages: 22,598

    Ditto, the guy was in so deep that even four-wheel drive & mud chains would have helped. All of us should have a critical path method of troubleshooting.
     
  7. mudter

    mudter LawnSite Member
    from texas
    Messages: 15

    was not in the service truck, so I did not have multi meter with me. that is the first thing on list monday morning
     
  8. mudter

    mudter LawnSite Member
    from texas
    Messages: 15

    Don't know if there is a master valve. I did try to activate each one of the valves with the 24 and got a green light but not water. This would lead me to believe that there is a master valve but there is no mv wire connected at the controller.
     
  9. mudter

    mudter LawnSite Member
    from texas
    Messages: 15

    sorry for the long tread, just trying to explain path of trouble shooting that I did. next time I will try to be like some of the other donkies with their short questions like...... "How much per zone?"
     
  10. Wet_Boots

    Wet_Boots LawnSite Fanatic
    Messages: 49,261

    (it still helps to edit for clarity - break up into an extra paragraph or two. A bit of extra work, to make up for the readers not being able to hear one describe the problem in spoken words)
     

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