Fridge Automatic Defrost Not Working

If the defrost heater does not work then the defrost heater will not start and the frost will start to build up.

Fridge automatic defrost not working.

Several times a day the defrost heater turns on for a short period of time to melt the frost build up. When the defrost sensor trips it shut off power to the defrost heater. You can use volt ohm meter to check the defrost sensor for continuity. Sometimes frost builds up to the point that it blocks airflow and the refrigerator stops cooling completely.

The defrost sensor fuse is not resettable if the defrost sensor fuse blows you must replace the defrost sensor. To determine if the defrost sensor or fuse is defective use a multimeter to test both the sensor and fuse for continuity. If the defrost sensor fuse blows the defrost system will not work and the refrigerator will not defrost. Assemble the timer back onto the fridge and reinstate the power supply.

To reset the refrigerator defrost timer tepte simply states to locate the circular notch on the timer and turn it counterclockwise with a flathead screwdriver. In this video from sears partsdirect we ll help you troubleshoot why your refrigerator s automatic defrost system isn t cooling including checking the electronic control board defrost heater thermistor and bi metal thermostat. Once you ve pinpointed the problem we ll show you how to fix it and get your refrigerator cooling again. The defrost thermostat is not working.

The defrost sensor fuse is not resettable if the defrost sensor fuse blows you must replace the defrost sensor. If the defrost sensor fuse blows the defrost system will not work and the refrigerator will not defrost. The defrost heater tells the system when it is cold enough to start the defrost heater. The next thing you do is open up the freezer and see if that is still working properly.

This video is just an example of what you might want to look for. Refrigerator defrost problem is difficult to fix and most of the time require a refrigerator repair expert to identify the root of the problem. When you get out the milk juice or whatever it is you get for breakfast you notice something is wrong. If possible check the defrost thermostat before the ice is melted.

Some refrigerators have a reset or trip switch that is not marked or indicated in any way. It needs to be turned until the fan stops which means your fridge has reset the defrost button. Since you cannot force the refrigerator into a defrost cycle on most models go ahead and unplug the refrigerator. You wake up in the morning and go to the refrigerator to get some breakfast.

If the defrost sensor trips because it s not working correctly frost builds up on the evaporator fins eventually making the refrigerator and freezer not cool well.