We had a lighting strike recently that fried both the controller and the pump relay switch. I've been replacing parts as I discover they're not working. Fun . I'm at the point where everything is working except the pump relay switch (I think).
When the controller signals for water I can see with a volt meter that it's putting out ~26-27 volts AC. I'm measuring across the common and relay out terminals. I'm using a new controller. It's a Cyber-Rain http://www.cyber-rain.com/Products/products.aspx
The pump start relay switch is a AEG SL07 http://www.calcentron.com/Pages/AEGHomePage/aeg_contactors/aeg_contactors_home.htm
My problem is that when I have the controller apply the switching voltage, I don't see the switch close. I'm placing an Ohm meter across one of the pairs of contacts. When I press the switch on the relay next to the "10E" label I do see the switch close.
I've bought two SL07 switches thinking the first was faulty, but I get the same results with the second one. I'm not an electrician so I may be way off base, but is it possible that the voltage is correct, but there isn't enough current put out by the controller to trip the relay?
All thought are appreciated...
Last edited by Thatguy; 07-26-2009 at 02:01 PM.