I have 89 gxe with digital ac control wich I just replaced with another unit because the lcd display on mine was bad, now the one I bought works but it turns off on it's own, the display works better than the old one but it just turns off or starts warming up the air, is there some thing else I could do please help.

 

these units can be pretty quickly fixed, as long as you know how to solder a circuit board. there have been quite a few threads on how to fix these.