The cause of this sound could be many different things. I will cover the most likely, (easy one). Your condenser fan is going bad. Pull the Refrigerator away from the wall, up-plug it and remove the card board cover. Get a vacuum and get as much dust out as you can. Locate the fan, just try and clean the blades with a warm wet rag. Plug It back up and see if that is indeed the source of the sound. If it is, some fans can be oiled. You will have to take the fan out and using a Pin oilier, oil the shaft at both ends. PLEASE UN-PLUG IT BEFORE YOU WORK ON IT. PLEASE BE CAREFUL IN THERE. If you find that is the problem and you want to get a new fan, you will need all the numbers from your Ref. (model and Ser.) And you can order online from Sears.
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The cause of this sound could be many different things. I will cover the most likely, (easy one). Your condenser fan is going bad. Pull the Refrigerator away from the wall, up-plug it and remove the card board cover. Get a vacuum and get as much dust out as you can. Locate the fan, just try and clean the blades with a warm wet rag. Plug It back up and see if that is indeed the source of the sound. If it is, some fans can be oiled. You will have to take the fan out and using a Pin oilier, oil the shaft at both ends. PLEASE UN-PLUG IT BEFORE YOU WORK ON IT. PLEASE BE CAREFUL IN THERE. If you find that is the problem and you want to get a new fan, you will need all the numbers from your Ref. (model and Ser.) And you can order online from Sears.