How to Troubleshoot a Self-Defrosting Kenmore Refrigerator

Time the Kenmore refrigerator if it has already entered the automatic defrost cycle. The duration varies by type (top, side-by-side or bottom mount) and model. Top mounts can take about 20 minutes to defrost, while bottom mounts need 30 minutes. If you cannot find the exact defrosting time, located in your owner's manual, then time your unit for at least 30 minutes. Afterwards, the refrigerator and its mechanical components should switch back on to cool the unit back down.

You might also hear the clicks of an invisible defrost timer and thermostat on the inside of the refrigerator. Though you cannot visually use the timer, listen for its sounds as an indicator that defrosting is active and inactive.

Listen for sounds that are side effects or a result of the defrosting process. Hissing and sizzling is meltwater coming in contact with the heating element that facilitates defrosting. After the defrosting cycle is complete, you may hear popping noises.

You may also hear the sound of running water, which is the meltwater filtering into the drain pan. In some models you don't have to worry about emptying this built-in pan, because the water automatically evaporates away.

Look on the back wall of the refrigerator. If you see and hear drops of water running down this wall, it is a normal result of the defrosting process and there is no additional action needed on your part.

If you open the freezer compartment, you might see a red glow in some models. This is normal, as the heating elements are radiating infrared light energy.