Wine cooler makes a loud humming or buzzing noise from the rear.

Unplug the cooler before touching the fan or heat sink.

Steps:

• Level the unit: Use a spirit level and adjust the front feet so the Koolatron cooler sits firmly on all corners.
• Inspect rear fan: Remove the rear cover and check if the fan blades are rubbing against wires, the grille, or dust buildup. Gently reposition any wires and clean dust.
• Tighten hardware: Tighten screws securing the fan and the aluminum heat sink to reduce vibration.
• Replace fan: If the fan still hums loudly or wobbles, replace the rear cooling fan motor with a compatible Koolatron part.