well I've been trying to diagnose this problem for about a week. I recharged my ac system which has a small leak but I was trying to make it through the summer with some cold air. it was chilly the other day and I turned on the heat an nothing but cold air. if I press the ac button with the heat all the way up on 90 I get nothing but the coldest ac air. I did the ECC self test an I got the codes E7, E2, and P7. so im trying to figure out if I need to replace the blend door assembly or just the actuator motor. this same thing happened to me about this time last year but the problem magically resolved itself. Can someone please give me some insight on this problem. is there anyway I can manually set the door to heat? fall is coming in quick and I cant imagine an Ohio winter without heat. thank you for your time and effort it is really appreciated.