Rattling or knocking noise when the compressor starts or stops.

Safety: Unplug the refrigerator before bending any tubing or tightening mounts.

• Remove items from top: Take off any objects on top of the fridge that may rattle.
• Inspect rear tubing: At the back, gently move refrigerant lines away from each other or from the cabinet using your fingers. Do not kink or sharply bend the tubes.
• Secure condenser: Tighten any loose brackets holding the condenser coil.
• Check compressor mounts: Ensure mounting bolts are snug but not overtightened, and rubber grommets are in place.
• Test operation: Restore power and listen during compressor start/stop cycles.