If your unit is in warranty, please call GE and schedule tech service. The newer model refrigerators use an electronic control board that requires special equipment to diagnose. Out of warranty service calls would be at your expense. If it is an older refrigerator I am not quite sure. I hope this helps...
Handy Man
June 2007
I can answer this question...
How can I test my defrost timer and heater on a GE Refrigerator, model #TFX?