Freezer makes rattling or clanking noise when compressor starts or stops.

Safety first: Unplug the freezer before reaching behind or under it.

• Check external items: Ensure nothing is leaning against the freezer sides or top that could rattle.
• Inspect rear compartment: Remove rear panel and gently move refrigerant lines away from each other and from the cabinet using foam sleeves or clips.
• Secure condenser: Tighten any loose condenser mounting brackets.
• Compressor mounts: Confirm that compressor mounting bolts are snug but not overtightened, and that rubber grommets are in place.