zone runs when other zone runs

Discussion in 'Irrigation' started by ashs inc, Nov 8, 2004.

  1. ashs inc

    ashs inc LawnSite Senior Member
    from alabama
    Posts: 598

    Hey guys thanks in advance. I have a system I installed and for some reason when zone 5 comes on zone 9 comes on. I dont understand. I know the wires are not mixed up. I dont know why this is happening. please help to remedy this.

  2. activelandscaping

    activelandscaping LawnSite Member
    Posts: 241

    couple possibilities. Maybe a bad timer or a pinched wire. Take one wire, of the two that are on together, off in the box. Then start the zone that is still connected and test the wire you unhooked. If it's hot then the wire is pinched somewhere. If it doesn't come on then check the timer.

    Hope this helps,
  3. Fatheroftwo

    Fatheroftwo LawnSite Member
    Posts: 19

    Check to see if the wires are bare somewhere along the line and that they are touching. May try a meter to see how many volts the controller is putting out on each zone also (should be @24-26). The controller may be surging and causing a Weak valve to open. Just food for thought.
  4. williamslawn

    williamslawn LawnSite Member
    from SC
    Posts: 202

    Make sure valve does not have trash in it.
  5. Instant Rain

    Instant Rain LawnSite Member
    Posts: 54

    It might be current leakage. If there is a bad connection or nick on zone 5 and also a nick or bad connection on zone 9, the current may leak across the earth and cause the other valve to turn on. This usually only happens when a valve has just ended its watering as the next valve is starting. Attaching a wire in conjunction with the common at the terminal and attaching the other end to a ground rod will solve this
  6. Planter

    Planter LawnSite Member
    from Utah
    Posts: 214

    Check out the Rainbird technical bulletins at the following site:

    The top two will possibly help you troubleshoot the problem:
    Pinpointing Ground Faults (PDF: 152 KB)
    Field Wiring and Valves (PDF: 1,746 KB)

    With an Ohm meter you can determine what is happening.
  7. TClawn

    TClawn LawnSite Silver Member
    Posts: 2,036

    when zone 9 comes on does zone 5 come on too?

    you could try disconecting zone 9 from the timer and see if it still comes on. then reconnect zone 9 and disconnect zone 5 and see if it still happens. that way you'll know if it's a hydraulic problem or electrical. if it's electrical I would not want to be you, especially if the system is still under warranty.
  8. Critical Care

    Critical Care LawnSite Bronze Member
    Posts: 1,654

    Lets see if we have this correct. Are you saying that both zones are coming on when zone 5 is activated at the controller? Or when you turn on zone 5, only zone 9 comes on, and vice versa zone 5 comes on when 9 is activated? Sounds confusing, but gotta get this straight.
  9. TClawn

    TClawn LawnSite Silver Member
    Posts: 2,036

    I think only zone 9 comes on.

    if thats the case then why doesn't he just put the zone 9 wire in to the zone 5 slot, and the zone 5 wire in to the zone 9 slot.
  10. sheshovel

    sheshovel LawnSite Fanatic
    Posts: 5,112

    You probably have timed both station 5 and 9 to come on at the same time,Or you have them timed on both A and B or C,or your wires are screwed up.

Share This Page