Wine cooler makes a loud humming or buzzing noise from the rear that is louder than normal operation.

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

Steps to reduce loud humming/buzzing:

• 1. Pull the unit out: Move the cooler away from the wall to ensure the noise is not due to vibration against cabinetry.
• 2. Remove rear panel: Take off the lower rear cover to access the compressor and condenser fan.
• 3. Inspect the fan: Check for dust buildup or foreign objects in the fan blades. Clean and remove any obstructions.
• 4. Check fan motor: Spin the fan by hand; if it feels rough or wobbly, replace the condenser fan motor.
• 5. Inspect compressor mounts: Ensure the rubber grommets under the compressor are intact and that mounting bolts are snug but not overtightened.
• 6. Isolate vibrating tubing: Look for copper lines touching the cabinet or each other. Gently bend them slightly away and insert foam or rubber spacers to prevent contact.

Note: Some compressor hum is normal, but sudden increases in noise often indicate a fan or mounting issue.