4 of the 6 zone won't work

Discussion in 'Irrigation / Sprinkler Forum' started by MP, Sep 3, 2007.

  1. MP

    MP New Member

    Sep 3, 2007
    My sprinker unit is 13 yrs old, which has a 6 zone sprinker system. Zone 1,2,3,4 won't work. Zone 5 and 6 works fine.

    The first 4zones won't come on. The wiring all look OK. When I run the unit on manual mode and turn on the 1st. zone, I noticed that there is voltage (approx 10-15 v) on zone 2,3,4. However, zone 5 and 6 have "0" volts. So there is bleeding of voltage on zone 1,2,3,4 which ever zone I make it active.

    When I go to manual mode and set zone 5, the voltage on this zone is 20 V and all the other zone show zero voltage. Ditto for zone 6 also. Which I guess should be the way it should work.

    What is going on on zone 1,2,3,4. What should I do to fix this issue. I thought the control box is fried and just replaced a brand new Rain Bird system. Please help ....:( ....appreciate your help in advance.

  2. jimbo

    jimbo Plumber

    Aug 31, 2004
    San Diego, CA
    First, I would not rely on any voltage meaurements taken with all the wiring connected. I would disconnect all wires at the controller, and repeat your test measurements. My first suspect would be an open neutral ( probably white) wire involving one or more of those 4 valves. Such an open can cause you to get confusing voltage measurements like you did. You will just need to disconnect things and make some contiuity measurements on all the wires.
  3. Sponsor

    Sponsor Paid Advertisement

  4. the wet maker

    the wet maker New Member

    Sep 6, 2007
    are you sure all your solenoids are good?
Similar Threads: zone won't
Forum Title Date
Irrigation / Sprinkler Forum Sprinkler stuck in Zone 1. Won't turn off. Jul 24, 2011
Irrigation / Sprinkler Forum New sprinkler timer suddenly won't switch to 2nd zone manually May 22, 2011
Irrigation / Sprinkler Forum Bad water hammer in house while zone switches Jul 7, 2017
Irrigation / Sprinkler Forum Hardie 18 Zone Controller "Short" in LED Jul 6, 2017
Irrigation / Sprinkler Forum Sprinklers weak at the end of one zone May 31, 2017

Share This Page