have a 2000 gp GT, my ac hadnt worked since i pieced my car back together from hitting a deer back in dec of 06.. car sat for awhile too. got it back running summer of 08, decided to put a condenser in it this summer to get the ac workn... all went well. nut i notice this week (its been pretty cool of the mornings) that when i turn my heat on the ac compressor kicks on too....???!!!????

is it supo to do that?????? any help would be great guys!!