DOES NOT BLOW COLD AIR

Check to see if the compressor is running.  There is an overload on the relay that sometimes goes out.  If it is the relay you can hear the compressor kick on and off every couple of minutes.  To check the compressor shoot for continuity between the stand alone terminal and the other two.  Each should have about 4-12 ohms.  Check the evaporator fan in the back of the freezer.  Make sure the coils in the back of the freezer do not have too much ice build up.  If all of these check good you have a freon leak.