If you get the optional IO Board you can use the digital inputs to run the pump when the solar is on.
Wire through the booster pump relay on the Aqua Solar VOUT on the IO Board to one of the speed connections. That will run the pump when the solar turns on.
The Intelliflo3 says "If using digital inputs, schedules programmed via the Pentair Home app or drive touchscreen must be deleted." I do not know how it will work if you have a schedule to run the pump and also have the IO Board trigger connected.
If you are willing to buy the IO Board and wire it up let us know how it works.
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