I have Beverage Air WTR48A, this morning i opened and its really hot inside, it is blowing hot air. I chacked the fan built inside and the one in the back are working, motor is warm and when you tuch can feel little vibration so that means its working too. I assume relay works too cause otherwise motor will not work I think. So the only thing I can think of is freon but how can it go empty overnight. Ic anyone knows anything please help.