Visible condensation or sweating on the outside of the cabinet or around the door.

Steps:

• Check the door gasket for gaps and ensure it makes full contact with the cabinet all around. Replace if damaged.
• Reduce humidity in the room if possible (use ventilation or dehumidification).
• Avoid leaving the door open for extended periods.
• If condensation persists despite a good gasket and normal humidity, internal insulation issues may exist and require professional evaluation.