The SE doesn't have climate control.Climate Control is a system whereby you dial in a temperature setting and the Climate Control keeps it at that temperature automatically.Which is why the AC should always be on.
In the SE the fan switch set to 'off' will shut down the AC for the same reason as Climate Control,it assumes that if you don't want a flow of air then you don't want AC.
If you don't have a flow of air through the car then the conditioning system,hot or cold,summer or winter,AC on or off,will not work properly and in the winter the interior will easily mist up.
Vic.