If you have Hot and Cold lines from and to the Compressor, something is wrong with air flow. Could be Ducting, could be a really dirty Evaporator or Condenser, or very clogged Filters.
Condenser is easily cleaned with the Shroud off. Evaporator requires taking some of the forward housing off. With a Make/Model, we could tell you more about how to get in there. Our Coleman Mach has a panel that starts at the front, slopes up, and flattens out over the Fan Housing. The sides of the housing don't have to come off, just that upper piece. Yours may be different. Keep track of the several types of sheet metal screws that Coleman uses.