I have a commercial beverage air sandwich cooler that has no frost pattern on the evap.compressor is screaming hot

SOURCE: Air conditioner

You might be losing A/C R134. You can buy a test kit and new R134 at a parts and the tster will tell you how much R134 you have in your system and you can recharge it at the same time if you need it --Good Luck

SOURCE: mercedez benz S430 2002

My right door side mirra doesn't close and the window won't close.

SOURCE: How do I tell if my 1999 C280 is out of R134 or

Have the system tested,the only way to know for sure what the problem is.

SOURCE: I own a 2005 Escape. The ac compressor has been

Make sure you have the recirculation is on so you have cool air going through the case instead of outside air.when turn on recirc should hear noise like blower speed increasing.It's really not but it opens a door right by the blower motor.Here in Texas that's the only way to get them cool have to run recirc all the time.

SOURCE: Air Compressor will not come on. Fuses look good,

low side connection is in passenger fender well. Compressor should be running when you add freon. Jumper the 2 pin connector for the a/c cycling switch on the bottle or in the low side line.
Also, put can in hot water so it can evaporate faster to go in.