In the summer time you turn the AC on and it switches to Hot, you can turn the temp control and it will reset to Cold air. You slow down and it goes hot again. I don't know what to do is this a problem with the temp control or computer?

 

Very common issue, many many threads about it, and a DIY on how to fix it yourself.

The solder joint for the ****-to-controlboard is breaking (since you have some control). It will completely break before long and nothing you do with the **** will change the temp.