Solar Heater Question

I bought a house that has a solar pool heater installed already. I’ve had to research to learn how it all works. It had the automatic actuator removed and disconnected from the controller, which I was happy to find that everything still worked when I hooked it all back up. I am curious though; if the pump is not on, will the automated solar actuator still open if it reads that the temperatures are optimal for solar heating? In other words, does the solar controller know when the pump is on or off?

We’d be glad to assist you. What is the make and model of the solar control? What is the pump connected to? Timer, Automation, Etc.?