Wine cooler making loud humming or buzzing noise from the rear

Safety: Unplug the cooler before touching the compressor, fan, or tubing.

Noise reduction steps:

• Level the appliance: Use a spirit level and adjust the front leveling feet so the cooler is stable and does not rock.
• Check rear panel: Remove and refit the rear cover, ensuring it is not flexing against the condenser or fan.
• Inspect condenser fan: Spin the fan blades by hand with power off. If they feel rough, wobble, or scrape, replace the condenser fan motor.
• Secure tubing: Gently move any copper refrigerant lines that are touching the cabinet or each other, and secure them with foam or clips to prevent rattling.
• Compressor mounts: Check the rubber grommets under the compressor. If they are hardened or missing, replace the compressor mounting grommets to reduce vibration.

Note: Some compressor hum is normal, but loud metallic rattling or grinding may indicate a failing fan or internal compressor issue.