Four wires : Red , Black , Yellow , Green
Which are the power wires and which are for control?
How should the control wires be connected?
Operating two valves to switch from pool to spa.
I am using the red and black for power and when I connect the green to the black the valves actuate but, when I disconnect the green, the valves do not return to original position.
Trying to actuate and then return to original position.