Freezer makes a loud knocking or banging noise during compressor start or stop.

Safety first: Unplug the freezer before touching any rear components.

• 1. Inspect compressor mounts: Check that the compressor is firmly held by its mounting bolts and rubber grommets. Replace worn grommets and tighten loose fasteners.
• 2. Adjust tubing: Identify any copper lines that move or strike the cabinet when the compressor starts or stops. Carefully reposition them and secure with foam pads or clips.
• 3. Add damping: Place anti-vibration pads under the freezer feet to reduce transmitted noise.
• 4. Monitor: If knocking persists and seems to come from inside the compressor shell, it indicates internal wear. The unit may continue to operate but eventual compressor replacement by a technician may be required.