Freezer makes loud knocking or banging noises when the compressor starts or stops.

Safety: Unplug the freezer before accessing the rear compartment. Avoid bending refrigerant lines excessively.

Steps:

• 1. Access rear: Remove the lower rear cover to expose the compressor and condenser area.
• 2. Check compressor mounts: Ensure the rubber grommets under the compressor feet are intact and the mounting bolts are snug but not overtightened.
• 3. Inspect tubing: Look for copper lines touching each other or the cabinet. Gently reposition them and add foam sleeves or clips where needed to prevent contact.
• 4. Secure condenser: Tighten any loose condenser brackets or screws.
• 5. Internal compressor noise: If knocking persists and seems to come from inside the compressor shell, it may be internal wear. This requires compressor replacement by a professional.