The unit is cooling good and the compressor is running just warm to the touch. The small fan over the defrost tray in the back runs all the time. Every once in a while it starts to defrost then quits. I would check the defrost timer but I don't know where it is located.
ANSWER Hello Dan. In the model number you provided, the control board is part number 12784415 and is the defrost timer for the unit. If the defrost is not cycling properly, you will need to replace the control board.
Answered by AppliancePartsPros.com | Monday, January 07, 2013