Customer Questions and Answers for Refrigerator Temperature Sensor by Ge

Marc,

This unit does not incorporate a temp control. The unit uses thermistors to regulate the temp. With the refrigerator side not cooling, there could be a one of a couple of issues. First you will want to pull the cover on the damper in the rear left upper corner of the refrigerator compartment and check to make sure that the damper is opening. With the door open the damper will close. When you push the light switch the damper door should close. If the damper is working then you will want to check to make sure that there is no frost build up on the rear wall of the freezer compartment. If there is 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. All of the thermistors in the unit will have the same specs. You can test each of them and if not reading within specs then replace the thermistor. 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