Loud knocking or rattling noise when compressor starts or stops.

Safety first: Unplug the refrigerator before adjusting components.

Steps to check:

• Inspect compressor mounts: Access the rear and check that the compressor is firmly mounted on its rubber grommets. Tighten loose fasteners carefully.
• Check tubing: Identify any copper lines that rattle against the frame when the compressor runs. Gently reposition them or add foam sleeves.
• Secure shrouds: Ensure the condenser fan shroud and rear panel are tightly fastened and not vibrating.