I have a pool with a spillover spa but only a single pump. I have solar panels, but no automatic controller for them, just an actuator for the valve.
My pump is on a mechanical timer and runs from 10am till 5pm. All valves have Jandy valve actuators with I control with mechanical switches.
At about 3pm, I'd like the valves to turn such that only the spa is being filtered and it is not in spillover mode, and to make sure that the solar valve is opened. That way, the spa will warm up to about 100 - 105 degrees on most days.
I was thinking of a sprinkler timer, but they supply power and I need something that simply flips from NO to NC.