Oscar C Halethorpe , MD March 20, 2018 Appliance: Whirlpool Refrigerator GX2FHDXVQ03 Whirlpool Refrigerator Gx2fhdxvq03: Refrigerator was warming as the freezer stayed frozen. How to replace Refrigerator Electronic Control Board. Determined the problem was in the electronic control board. Since the fridge was already open and apart I decided to replace the defrost wiring harness too. The instructions that came with the control board were exact and easy to follow. The wiring harness is a simple replacement. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes