Answer Ken, You will want to check the refrigerator sensor to ensure that the sensor is good. The resistance of the thermistor WR55X10025 should be 5K ohms at 77 degrees, 14.4K ohms at 36 degrees and 42.2K ohms at 0 degrees. If the resistance is not correct then the thermistor would need to be replaced. Read More... Answered by AppliancePartsPros.com | Wednesday, February 17, 2016