I misspoke, though again, about the EasyTouch not the IntelliCenter, but it may indicate Pentair's mindset. The EasyTouch's Freeze mode kicks on around 35°. That temperature doesn't appear to be adjustable, so that aligns with the IntelliCenter. It's the IntelliFlo that has the adjustable threshold, although that feature is called "Thermal Mode," not "Freeze Protection." Interestingly, the threshold adjustment range is 40° to 50°, so not 35° or 36°. Though I'm pretty sure my pump doesn't come on at 40°, but rather at 35°. So it's possible the IntelliFlo allows the EasyTouch to override its Thermal Mode setting in favor of the EasyTouch's Freeze Mode setting. The IntelliFlo's Thermal Mode can be turned off (bypassed). The EasyTouch's Freeze Mode cannot, although you assign which circuits respond to Freeze Mode, so that in effect could bypass Freeze Mode. It may be that I have my IntelliFlo's Thermal Mode turned off (though I don't remember doing that, nor would I), but I can't check it because my IntelliFlo's display no longer works!
The EasyTouch manual has similar inconsistencies, in that it sometimes says "at 35°" other times "below 35°" or "below 36°", etc. So they can't seem to get that together for either product line.
The EasyTouch's solar heater control does have a different threshold temperature for on and off. They call that setting "Temperature Differential," which controls the difference between when solar heating will engage vs when it will cut off, to avoid the pump and solar valve from going crazy right around the thermostat setting. So like I said, Pentair knows to, and how to, avoid this problem, but doesn't seem to provide that nicety for Freeze Mode (or if the EasyTouch does that, it's not adjustable as it is for solar heating control).
Not much help for IntelliCenter I realize, but it might explain why you can't find control of settings that you might want to adjust.