Marv and Cathy:
Remember, when you bypass the box (with the red light) you lose your overheating protection. My experience has been that a variety of conditions will trip the box....not necessarily conditions that come from a faulty frig....like excessive moisture (during a rainstorm, etc.).
I suggest you purchase a magnet capable of holding 25lbs (about 5 bucks at most hardware stores) and use it to reset your black box by passing it over the box. It may take a few passes; you may have to vary the conditions (like power on or power off) and it will eventially reset. Then at least you have protection until the next ghost appears.
Important: With each reset, carefully check you unit for leaks (yellow stains), failed fans, etc.
Hoe this helps....Stan.