11 Reasons For Dishwasher Not Cleaning Dishes

Dishwasher Not Cleaning Dishes

It may have happened to you that you have collected your dirty dishes for a few days and loaded them in the dishwasher, but after washing, you will encounter dirty and uncleaned dishes and you will have to wash them all by hand again! But where is the problem? Why Dishwasher not cleaning? What is the reason for dishes not being cleaned in the dishwasher and is there a solution for it?

In this post from RepairLand website, we intend to investigate the reason why the dishwasher is not cleaning and explain the available solutions to you.

Cause of dishwasher not cleaning dishes

In fact, not cleaning dishes in the dishwasher is one of the common problems of this machine, which can occur for various reasons. This problem can have a technical aspect, ie it is due to a malfunction of one of the parts of the device. In the second case, the cause of the dish stain in the dishwasher is due to non-technical cases, ie it has occurred due to non-observance of some items and principles in using the dishwasher. Fortunately, most of the time, the cause of the dishes becoming cloudy or the cause of the dishes whitening and the dishes not being cleaned in the dishwasher in general is due to non-technical issues and the problem can be solved by yourself. Here are 11 effective reasons.

1- The dishwasher detergent you used is unsuitable

Perhaps the most important factor in preventing dishes from being cleaned by the dishwasher is the use of improper detergent. Dishwasher detergents include: powder, gel, detergent or rinse aid or coolant or polishing liquid or dishwashing oil (all of these names refer to the same substance), dishwasher salt and dishwasher tablets. Each of these different types of detergents has a different and specific application and performance, and one of them can be the cause of white stains on the dishes of your dishwasher, which we will learn more about in the following.

If you use unsuitable, expired, counterfeit or poor quality detergent, you will not receive the desired washing quality and cleanliness at the end of the dishwashing cycle.

  • Dishwasher detergent

Dishwasher powders are one of the most commonly used detergents, which must be accompanied by a special polishing liquid and special salt. These powders do not dissolve well in water when washed at low temperatures and almost often cause deposits or cloudy stains on the dishes and are a cause of dishes whitening in the dishwasher.

  • Dishwasher gel

Dishwasher gel is a better detergent than dishwasher powders, as it does not have the problem of sediment and low solubility in cold water. Dishwasher gels are available in a variety of simple and enzymatic forms and have become more popular in recent years. The use of dishwasher gels is also generally associated with the use of coolant and special salt.

  • Dishwasher polishing liquid

The polishing liquid is used in the last stage of the washing cycle and when rinsing the dishes. This liquid is used to make the dishes more shiny and help them dry better. If the polishing liquid is not used or is low, in addition to the problem of not cleaning the dishes in the dishwasher, we may also have trouble drying the dishes. If the amount of polishing liquid is high, other problems will occur, such as the production of too much foam by the dishwasher.

  • Dishwasher salt

Dishwasher salt is one of the most important factors in dishwasher washing. The quality and quantity of the salt is very important because the function of the salt is to take the hardness of the water and adjust it, and this is directly involved in the quality of washing, sediment and bleaching of the dishes. Dishwasher salt is effective in reducing and controlling water hardness by regenerating dishwasher resin, which reduces water hardness. If the amount of salt in the salt tank at the bottom of the dishwasher is low, the hardness of the water will increase and it will cause deposits on the dishes and the dishwasher itself.

  • Dishwasher tablets

Dishwasher tablets are more popular because of their better performance than powders and other detergents. Dishwasher tablets come in a variety of enzyme-free and non-enzyme models, as well as plain or gypsum tablets that contain only detergent, and jelly or multifunction tablets that contain coolant and some salt in addition to the detergent.
Depending on the type of tablet used, you may no longer need to use oil or polishhing liquid. But the use of salt is necessary in any case. Detergent tablets are not a good choice if you use short-term or low-temperature washing programs. Because dishwasher tablets do not dissolve well in a short time in water below 50 degrees.

Wrong dishwasher settings

2- Wrong dishwasher settings

Dishwasher settings are another factor that affects the quality of the dishwasher cleaning. Adjusting the amount of water hardness according to the hardness of the water in your area, choosing the right washing program for dirty dishes and determining the right water temperature to remove grease and stains, should be done before the start of the washing cycle.

3- Improper arrangement of dishes in the dishwasher

One of the reasons that dishes not cleaning in the dishwasher is to put the dishes in a wrong order. In these cases, when water and detergent do not reach all the dishes and their different parts, some of the dishes are not washed well and food powder or pieces may remain on them. Also, improper arrangement of dishes in the dishwasher may interfere with the movement and circulation of the sprinkler arm, cause the washing arms to malfunction and even damage the arms or dishes.

Try to load the dishes in their own place according to the principles of arranging the dishes in the dishwasher and depending on the amount of dirt, put them in the top or bottom basket and avoid sticking the dishes together and overloading.

4- Clogging the holes of the dishwasher sprinkler arm

The reason for cleaning the dishwasher can be clogging and blockage of the nozzles or holes on the sprinkler arms of the machine. If the sprinkler arms do not work properly and are blocked by water deposits, food debris, etc., it will not be possible to spray water on the dishes, and as a result, they will cause the dishes in the dishwasher to become cloudy and not clean.

Therefore, if the water spray pressure decreases and the amount of water in the device is not enough, the sprinkler arms or wash arms should be inspected and their nozzles or holes should be inspected. If necessary, you can use the vacuum cleaner to remove the arms and wash and clean them with a vacuum cleaner and needle.

Dirty dishwasher drain filter

5- Dirty dishwasher drain filter

One of the reasons for not cleaning the dishwasher is that the drain filter is blocked. The dishwasher drain filter is located on the bottom of the machine and usually consists of two large and small filter pieces. This filter becomes clogged over time due to the accumulation of small and large pieces of food, which leads to the dishes not being cleaned.

To clean filters, simply remove them (usually by turning them clockwise and lifting the filter), then wash them with soap and water to remove food particles from the cavities.

6- Problem of dishwasher water inlet valve

Faults in the water inlet valve can cause the dishes to not cleaning by the dishwasher. If the inlet valve or one of its related parts has a problem, there will be a problem with the dishwasher not being dehydrated. If the amount of water is low, the dishes will not be washed clean. In these cases, repairing or replacing the solenoid valve by an experienced technician will solve the problem.

7- Problem in the water pump system of the dishwasher

Any defect in the water pump system, which includes the water circulation pump (motor), impeller, belt, etc., can interfere with the washing process and cause the dishes to become cloudy in the dishwasher. If the pump makes no sound or just buzzes, it may be burned out. It may also be torn on models that have belt. Ensuring that the flow reaches the pump must also be checked in the first place.

8- Damage to sprinkler arms

The dishwasher does not clean the dishes well if the sprinkler arms or the washing arms are broken or have problems moving and circulating, or for any reason are not able to conduct water and spray water on the dishes. In these cases, the sprinkler arms are usually replaced to solve the problem.

9- Defective thermostat or heating element of the dishwasher

The cause of white stains on dishes in the dishwasher can be due to element failure. If the dishwasher water is not hot enough, the stains will not be completely removed and the dishes will not be washed properly. Failure to heat the water can be due to a faulty or burnt thermostat or thermofuse. In addition to the thermostat, the dishwasher heating element can also have a problem. Therefore, when investigating this case, it is necessary to inspect the dishwasher element as well.

10- Dishwasher electronic control board failure

Malfunction of the dishwasher control board, which is a kind of machine core, can also be the reason why the dishwasher is not cleaned. It is better to investigate this case after reviewing all the said cases and do the final step.

11- Dishwasher powder container failure

Another thing that may be effective in not cleaning dishes is the dishwasher powder container. This part must be properly closed and completely insulated. If the powder container is defective and the detergent powder does not enter the dishwasher with water, the dishes will not be well washed and cleaned. You can solve this problem by replacing the powder container.

In this article from RepairLand, we examined the reason for the dishes not being cleaned in the dishwasher and introduced some technical and non-technical cases and introduced the effective factors. We become happy that you share your comments with RepairLand website.

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