Condensation or moisture forming on the inside of the glass door.

Safety first: Unplug the unit before inspecting door wiring or heaters.

Steps to minimize condensation:

• 1. Check ambient conditions: If the room is very humid, some condensation is normal. Use a dehumidifier or improve ventilation.
• 2. Inspect door gasket: Look for gaps or damage that allow moist air to enter. Replace the gasket if it does not seal tightly.
• 3. Reduce door openings: Limit how often and how long the door is opened.
• 4. Door heater check (if equipped): Some Viking wine coolers have a door mullion heater. If condensation is heavy around the door frame, the heater may have failed. Have a technician test and replace the heater if necessary.