Zone not starting

Discussion in 'Irrigation / Sprinkler Forum' started by Macdaddy90, Jul 7, 2019.

  1. Macdaddy90

    Macdaddy90 New Member

    Jul 7, 2019
    San Joaquin County, California
    My problem is a zone that will not turn on via controller, but will turn on manually.

    For some background, I have an older home that came with numerous irrigation issues (controller was dead, valve diaphragms damaged, broken heads). Replaced controller, two backyard valves, and two front heads. Everything works fine now except this one zone.

    Here are the details:
    • Installed brand new Rain Bird Anti-Siphon Irrigation Valve with Flow Control. Installed same valve right next to it for adjacent backyard zone.
    • Opening bleed will start zone fine.
    • Opening solenoid manually will start zone fine, but it takes quite a few turns and the base of the solenoid is leaking at that point.
    • Flow Control setting makes no difference.
    • The backyard valves are close enough to let me swap the solenoids (leaving wired as-is). Swapping the solenoids shows the solenoid is not the problem (the other zone continues to work and the problem zone continues to not run).
    • Removing the bonnet did not reveal anything amiss.
    Any ideas on what the problem might be?
  2. WorthFlorida

    WorthFlorida The wife is still training me.

    Oct 28, 2009
    Orlando, Florida
    The zone itself at the controller is most likely bad. You did not say what model controller and total number of zones.

    1. To further test, check the voltage at the controller for this bad zone when it is activated.
    2. If no voltage, remove the wire and check the voltage again.
    3. A no load (no wire connected) it could be high as 29.9 vAC for a 24 volt transformer.
    4. With the wire connected to a good solenoid it may be anywhere from 18-24 v AC
    5. With an ohm meter and with the wire removed for this bad zone, measure the resistance to the solenoid. Should be 20-60 ohms. If no reading, there is an open wire.
    6. Move the bad zone wire to a spare zone (port) at the controller and activate that previous unused port. If it works reprogram the controller. You can skip a zone.
  3. Sponsor

    Sponsor Paid Advertisement

Similar Threads: Zone starting
Forum Title Date
Irrigation / Sprinkler Forum Almost no pressure in 4 out of 6 zones Aug 16, 2020
Irrigation / Sprinkler Forum Sprinkler zone pressure tank surge Aug 12, 2020
Irrigation / Sprinkler Forum Sprinkler Zones Won’t Respond Jul 20, 2020
Irrigation / Sprinkler Forum Sprinkler System Zone Issues? Jun 29, 2020
Irrigation / Sprinkler Forum Irrigation Zone Control Jun 22, 2020

Share This Page