Refrigerator making loud knocking, banging, or rattling noises during operation

Safety first: Unplug the refrigerator before touching moving parts or internal components.

Steps:

• Level the unit: Adjust the front leveling legs so the refrigerator is stable and does not rock. Slightly tilt back so doors close by themselves.
• Check rear components: Remove the rear panel and inspect the condenser fan for contact with wires or debris. Reposition any items touching the blades.
• Secure tubing: Look for refrigerant lines or wiring harnesses vibrating against the cabinet. Use foam pads or clips to secure them.
• Compressor mounts: Ensure the compressor mounting bolts or rubber grommets are intact. Replace worn grommets if the compressor is banging against the frame.

Note: Some brief noises (clicks, pops) are normal during defrost and temperature changes, but continuous loud banging is not.