Strong unpleasant odor inside the refrigerator even after basic cleaning.

Safety first: Unplug the refrigerator before deep cleaning and avoid harsh chemicals that can damage plastics.

Steps:

• 1. Remove all food: Discard spoiled items and store good food in a cooler.
• 2. Clean all surfaces: Wash shelves, drawers, and interior walls with a solution of warm water and baking soda or mild detergent.
• 3. Clean hidden areas: Remove crisper drawers and clean under them. Check the drain hole and channel for residue and clean thoroughly.
• 4. Check and clean the drain pan: From the rear, remove the drain pan and wash it with hot soapy water if accessible.
• 5. Replace air filter: If your De Dietrich model has an internal air filter or deodorizer cartridge, replace it according to the manual.
• 6. Air out the cabinet: Leave doors open for several hours to dry completely before restarting.