If the inside of a dishwasher turns black and develops an odor when it's not used for extended periods, it could be due to mold or mildew growth. Mold and mildew thrive in damp and dark environments, and if there is moisture left inside the dishwasher, it creates an ideal breeding ground for these microorganisms.
Here are a few possible reasons why this may occur:
Residual moisture: If the dishwasher isn't completely dry before being closed or if there is residual water left in the appliance after the last use, it can promote mold and mildew growth.
Food debris: If there are food particles or residue left in the dishwasher, it can contribute to mold growth. Even small traces of organic matter can provide a food source for mold and bacteria.
To address the blackening and odor in the dishwasher, follow these steps:
Clean the dishwasher: Remove any visible mold or mildew using a mild detergent, warm water, and a scrub brush or sponge. Pay attention to the rubber seals, corners, and crevices where mold can accumulate. You can also use a mixture of vinegar and baking soda to help eliminate odors and disinfect the dishwasher.
Remove and clean filters: Most dishwashers have filters that can become clogged with food particles and debris. Remove the filters and clean them thoroughly according to the manufacturer's instructions.
Dry the dishwasher: After cleaning, ensure the dishwasher is completely dry before closing the door. Leave the door slightly ajar or use a towel to absorb any remaining moisture.
Ventilation: Proper ventilation in the dishwasher area can help prevent excessive moisture buildup. Ensure the dishwasher is installed correctly and that there is adequate airflow around the appliance.
By regularly cleaning the dishwasher, ensuring it is dry, and removing any food particles, you can help prevent mold and mildew growth. If the issue persists or the mold growth is extensive, it may be beneficial to seek professional assistance or contact the manufacturer for further guidance.