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When a dishwasher is not cleaning dishes effectively, there could be several common problems that may be affecting its performance. Here are some usual issues to look out for:

  1. Clogged spray arms: The dishwasher's spray arms are responsible for distributing water and detergent to clean the dishes. If the spray arms are clogged with debris, such as food particles or hard water deposits, they won't be able to spray water effectively, resulting in poor cleaning.

  2. Dirty or clogged filters: Dishwashers have filters to trap food particles and debris during the wash cycle. If these filters become dirty or clogged, water circulation and cleaning efficiency will be reduced.

  3. Water supply issues: Insufficient water supply to the dishwasher can lead to inadequate cleaning. Check that the water inlet valve is working correctly and that there are no kinks or blockages in the water supply line.

  4. Improper loading: Incorrectly loading the dishes can hinder water and detergent from reaching all the soiled areas. Make sure you're following the dishwasher manufacturer's loading guidelines to optimize cleaning performance.

  5. Detergent-related issues: Using the wrong type of detergent, using too little or too much detergent, or using detergent that has expired can impact the dishwasher's cleaning capabilities.

  6. Hard water deposits: In areas with hard water, mineral deposits can accumulate in the dishwasher, affecting its efficiency. This can be resolved by using a dishwasher cleaner or descaler regularly.

  7. Malfunctioning wash pump motor: The wash pump motor is responsible for moving water through the dishwasher during the cleaning process. If it's not working correctly, the dishes won't get cleaned thoroughly.

  8. Worn or damaged parts: Over time, various dishwasher components can wear out or become damaged, such as the spray arms, door gasket, or wash arm bearing. These issues can impact the dishwasher's performance.

  9. Low water temperature: If the water entering the dishwasher is not hot enough, the detergent may not dissolve properly, leading to poor cleaning results.

  10. Blocked drainage: A clogged or partially blocked drainage system can prevent dirty water from draining properly, leading to dirty dishes at the end of the cycle.

Before attempting any repairs, it's essential to consult the dishwasher's manual and safety guidelines. If you're unsure about diagnosing or fixing the problem, it's best to seek the assistance of a professional dishwasher repair technician.

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