The refrigerator’s ice maker has its own motor to push the ice cubes from the freezing tray to the ice bin. This operation lasts for about 15 minutes and occurs approximately every 1 ½ to 2 hours. If in your home the water connection isn’t used, you can switch the ice maker’s power to “OFF” and that will stop the unit from performing this function being that said noise gets much louder when icemaker is running dry.
If the noise stops when the doors are open, but then returns as they are closed, this is likely the result of a fan noise. Based on the severity of the noise, this may require service.
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