The white powdery buildup you're seeing inside your new dishwasher is most likely caused by hard water deposits or mineral residue. Hard water contains high levels of minerals, such as calcium and magnesium, which can leave behind a white, chalky residue when the water evaporates.
Here are a few possible solutions to help reduce or eliminate the white powdery buildup:
Check the water hardness: Determine the hardness level of your water by using a water test kit or contacting your local water utility. If you have hard water, it's advisable to install a water softener or use a dishwasher additive specifically designed to combat hard water deposits.
Use a rinse aid: Dishwasher rinse aids are designed to help prevent mineral deposits and improve drying performance. They work by reducing the surface tension of water, allowing it to sheet off dishes and glassware more effectively, minimizing the chance of residue formation.
Adjust detergent usage: Excessive detergent can contribute to the formation of residue. Ensure you're using the correct amount of dishwasher detergent recommended by the manufacturer, and consider using a detergent specifically formulated for hard water conditions.
Clean the dishwasher regularly: Periodically clean the dishwasher to remove any existing buildup. You can run an empty cycle with a dishwasher cleaner or use a mixture of vinegar and baking soda. Be sure to follow the manufacturer's instructions when using any cleaning product.
Wipe dishes before loading: If there are visible food particles or residues on dishes before loading them into the dishwasher, it can contribute to the buildup. Pre-rinse or scrape off excess food from dishes to help reduce the amount of debris in the dishwasher.
By implementing these steps, you should be able to minimize the white powdery buildup inside your dishwasher and keep it running efficiently. If the issue persists or worsens, you may want to consult the dishwasher's user manual or contact the manufacturer for further guidance.