Refrigerator makes loud knocking, rattling, or buzzing noises during operation.

Safety first: Unplug the refrigerator before touching moving parts or removing panels.

Step-by-step:

• Isolate noise source: Listen carefully to determine if the noise comes from inside the cabinet, the rear, or the bottom.
• Check leveling: Ensure the appliance is level and all adjustable feet are firmly on the floor.
• Inspect rear components: Remove the rear cover and check that the condenser fan and compressor are securely mounted. Tighten any loose screws.
• Check tubing: Gently bend any copper or aluminum tubes that are touching each other or the cabinet to create a small gap.
• Internal fan: If noise is from inside, access the evaporator fan and check for ice or debris on the blades. Clear and test.