HELP A/C Wont blow cold, electrical 2008
 

I recently installed a new head unit in my 2008 GT. there are 5 connections you have to disconnect. The connection behind the 1/2/3/4 nob on the far right, that controls how much air you want, has a grey clip that i accidentally broke off when removing, but it is just to secure that it stays in place (I think). My question is this. I reconnected it and it still blows hard, and correctly, on all settings, 1 2 3 and 4, but now it isnt cold. If there was something wrong with the connection wouldnt it not blow at all, or is there a reason it would still blow, but not cold? I am going to take the head unit back out in a few days to install new subs so i will look at it then to make sure it is plugged in all the way but i cant think of why it wont blow cold. i checked the fuse in the inner fuse box and under the hood, they are good. There is also a "diode" for the ac and a relay, is there a way to check if either of those are bad? i was praying it was just a blown fuse but it isnt. any help is very much appreciated guys. thanks a lot in advance for any advice.