A:AnswerI don't see any access to the freon container..so I'd say no but if your handy and have proper tools you MAY be able to access but I think the unit is a sealed unit with no way to add freon like you can with a car.
A:AnswerIt's normal behavior for the AC unit to exhaust hot air.
When the drain tray if full, your air conditioner beeps eight times, P1 appears on the control panel display, and your air conditioner stops. The motor continues to run.