u/More-Bandicoot-964

My upstairs ac for our bedroom is freezing up, we live full-time and in Oklahoma and it isn't even the hottest it'll be, I shut it off to let it thaw out in hopes once it does it'll run better and not struggle to cool like it is since it's frozen over. it's also shaded by a tree most of the day and our downstairs one is not and doesn't have this issue, not sure how to prevent it from happening or if upping the AC temp inside to where it doesn't run as much? But its only set to 70 any help is much appreciated! Thank you