Refrigerator makes loud humming, rattling, or vibrating noises.

Safety: Unplug the unit before touching moving parts at the rear.

Steps:

• Level the appliance: Adjust front and rear leveling feet so the refrigerator is stable and does not rock.
• Check rear components: Remove rear cover and gently hold the condenser fan shroud, tubing, and drain pan while the unit runs to identify vibration sources.
• Isolate tubing: If copper lines touch each other or the cabinet, insert foam or rubber spacers.
• Rearrange interior items: Ensure bottles and containers are not touching each other or the walls in a way that amplifies vibration.