Pot 1 gives the desired value.
Pot 2 sets the maximum allowed value. Right?
not sure if this makes sense but im trying to build a fan controller that will hit a temp higher than the off temp value and then run till it hits that off temp value.
Not exactly.
Can You try using an other explanation? Pot 2 is max and Pot 1 is the desired value.
The writing about over temperature I don't understand.