Refrigerator has strong musty or sour odor that persists after cleaning.

Step 1: Deep clean interior

• Remove all food and shelves.
• Clean all surfaces with a solution of baking soda and warm water or a mild disinfectant safe for refrigerators.

Step 2: Clean door gaskets

• Wipe gaskets with warm soapy water and a soft brush to remove mold.

Step 3: Clean drain pan

• Unplug the refrigerator and remove the rear lower panel.
• Carefully slide out the drain pan (if removable) and clean with hot soapy water; dry thoroughly.

Step 4: Improve airflow

• Do not block air vents with food items; allow air circulation to reduce moisture.

When to call a technician: If odor persists and appears to come from inside the cabinet walls, there may be insulation contamination that is not economically repairable.