Freezer runs very loudly; humming, buzzing, or rattling noises from the rear or inside.

Safety first: Unplug the freezer before touching moving parts or metal tubing.

Steps:

• Level the appliance: Use a spirit level and adjust the front feet so the cabinet is stable and does not rock.
• Check rear components: Remove the rear cover and gently press on copper lines and the condenser to see if noise changes. Add foam pads or reposition lines slightly to prevent contact with the cabinet.
• Inspect fan: Inside, remove drawers and listen near the rear panel. A grinding or squealing sound indicates a failing evaporator fan motor.

Remedy: Tighten compressor mounting bolts if loose. Replace the evaporator fan motor if noisy. Avoid bending refrigerant lines sharply to prevent leaks.