Sub-Zero Freezer Not Cooling? How We Saved a Woodlands Refrigerator by Replacing the Main Control Board

A Woodlands family’s built-in Sub-Zero freezer was warming up because its main control board was rebooting every few seconds. Here’s how we diagnosed it, replaced and programmed the new board, and got the compressors running again, plus the real reasons surges, lightning, and generator power damage refrigerator electronics.