GVA-24 valve

Yes that’s the manual and I have a copy of it that came with the valve. What I can’t figure out is howto stop the actuator in the middle at 90 degrees so it doesn’t turn anymore toward the spa return and the right side at the 180 degree mark to shut off the pool return.Everytime I think I have it , it’s not right.
 
Do you have a reason to run the spillway whenever the system is in pool mode?
Constant use of the spillway aerates the water and will cause pH to rise.

Have you considered using the automations built-in spillway mode?
This will allow you to cycle between pool jode and spillway mode a couple times daily for 15-30 minutes, allowing the spa water to be refreshed.
 
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