I have a couple of home gardens with drip lines, connected to Hunter valves which have Hunter Latching DC solenoids in them.
The solenoids were being controlled by a Toro DDCWP (http://www.sprinklertalk.com/manuals/toro/ddcwp_manual.pdf), but the screen is dying so I am looking to replace it.
I purchased an OpenSprinker Bee, but I can’t get it to control my solenoids properly.
I have done some experimenting and connected up the old DDCWP controller, and found that when it ‘closed’ a valve it did so by telling the solenoid to extend the small rubber plunger at the bottom on the solenoid.. When it opened the value it retracted the plunger.
I am guessing that this seals and unseals a opening in the valve that allows the water to flow. It works perfectly with the DDCWP.
I found with the Bee the behavior was reversed. When the Bee powered on it retracted all the plungers, allowing water to flow. When I started a zone it would extend the plunger, sealing the valve.
The solenoids have two wires – Black and Red. All the Black wires are commoned and the red wire is connected to signal.
Any thoughts or advice on what I should be looking at next here?