Customer Questions and Answers for Refrigerator Temperature Sensor by Ge

Manny, You will want to check the evaporator fan motor to make sure that it is blowing. If the fan is not running then you will want to check to make sure that the control board is sending power out to the fan. There should be 12 vdc on the J2 connection from the red to white wires. If no power then the issue would be the control board. Also check to make sure that the evaporator coils are not impacted with ice. If they are then you will want to check the defrost limiter to see if it has continuity. If it does not have continuity then you would not need to change it out. You will also want to check the defrost thermistor for resistance. The resistance values should be as follows, 42.5K at 0 degrees, 14.4k at 37 degrees and 5K ohms at 77 degrees. If not within range then it would need to be replaced. If it checks good then also check the defrost heater for continuity. If no continuity then replace and if good with continuity and all other components check ok then you would need a new main control board. You can test this with a multi-meter TJMA-DMT3. Here is a link on how to use a multi-meter. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html