Every once in a while my 99 Cirrus will only blow out hot air when you turn on the air conditioner. Sometimes you can turn it back off and then on and it starts cooling. Other times it seems like the car has to sit for a while for it to work. When it does work, it cools fine. At last oil change, I had them check the freon level and was told it was OK (pressure was about 35). Mechanic suggested electrical problem. Any ideas?? Thanks in advance