The freezer and refrigerator start to warm up. I notice the evaporator fan is running slow. I defrost the freezer with a hair dryer. When complete the evaporator fan runs at full speed and the temperatures are normal for a few days until it re-occurs.
Answer Hello Dave. It sounds like you may have a defrost problem with the unit. Check and see if there is any frost build up on the evaporator coils in the freezer. If so, you will need to test the defrost heater and the defrost thermostat. They should read closed for continuity when cold. You can test this with a multi-meter TJMA-DMT3. I will include a link at the end to assist you how to use the multi-meter if needed. If both parts are good, you will need to replace the defrost timer. Once the problem is repaired, you will need to thaw out the ice on the coils before the unit will operate properly. http://forum.appliancepartspros.com/oven-repair-including-ranges-cooktops/4810-how-check-continuity-ohmmeter.html
My GE refrigerator has 6 wires emanating from the plug for the evaporator motor. Four go to the motor, and two white wires attach to what appears to be a thermocouple. All six wires are fastened into a bundle by a cylindrical blue rubber grommet, roughly 1" in length, several inches down from the plug. The picture of the part that comes very close to what I have is for part #AP4438809. However, when I cross check with the Appliance Compatibility Tool, I find that my model is not listed. When I search on the refrigerator model, the web site gives me a choice of two models: AP3875639 and AP3191003. The former has four wires, and the latter has 5 wires. Neither look close to what I have, and neither check out with compatibility tool. What is the correct part ? Can you point me to a picture that I can compare against ?
The evaporator fan motor WR60X10074 has 6 wires and is the correct one for your unit. In the picture you will notice a blue, yellow, red, and white coming off of the motor itself. When you look just beyond the blue grommet you will notice 3 white wires that go to the plug which 2 are for the thermistor/thermocouple.