Wine cooler makes loud humming or buzzing noises during operation.

Safety: Unplug the unit before adjusting components at the rear. Avoid bending refrigerant lines excessively.

Steps:

• Level the cabinet: Use a spirit level and adjust the front leveling feet so the cooler is stable and does not rock.
• Check rear clearance: Ensure the cooler is not touching the wall or cabinets, which can amplify vibration.
• Inspect compressor mounts: Remove the rear panel and check the rubber grommets under the compressor. Replace if cracked or missing.
• Secure tubing: Gently separate any copper lines that are touching each other or the cabinet using foam sleeves or clips.
• Tighten fan brackets: Ensure the condenser fan and any internal fan assemblies are firmly mounted.

Note: Some compressor noise is normal, but sudden changes or metallic knocking sounds may indicate internal compressor damage requiring professional service.