Dishwasher leaves white residue on dishes

White plaque in the dishwasher: causes, methods of removal, care of the dishwasher

Dishwashing machines make dishwashing easier, but they are not without their drawbacks. The quality of cutlery processing decreases with prolonged use of the technique. One of the most widespread problems is the appearance of white scum in the dishwasher. The elimination of this defect is not particularly difficult, but before carrying out specific actions it is necessary to know the cause of the appearance of white deposits.

To understand why after the dishwasher all the dishes in a white plaque, it is worth describing the main causes of this unpleasant phenomenon. The most common ones are:

  • The hardness sensor is broken or not working properly. If the water hardness level regulator has failed or has been set to a softer setting, the unit will not work properly;
  • Using unsuitable detergents. If your dishes are covered with plaque after every use, try changing the detergent. It is not necessary to choose more expensive powders or tablets. The main thing is to match your dishwasher brand and water hardness level;
  • Not enough or no regenerating salt. This is a special agent which reduces the water hardness and prevents white plaque from forming on dishes. Pouring it into a separate container, and monitored with the help of an indicator (in some models it may not be);
  • Improper use of the regenerant. In this case, the salt may be scattered on the bottom or loaded into the wrong compartment by mistake;
  • Fouling of the components. Regularly cleaning your dishwasher to remove food particles, grease and lime deposits is key to keeping your plates sparklingly clean and fresh, and your dishwasher lasts for decades;
  • Ineffective distribution of detergents. Another fairly common cause of unsightly white stains on dishes. To avoid problems, carefully read the instructions for use and watch exactly where you put the detergent.

In rare cases, the appearance of lime scale can be a sign of serious damage, for the fixing of which you will have to go to a dishwasher repair shop.

White stains on dishes and in the dishwasher

A dishwasher should wash dishes perfectly, because we spend a lot of money on different pills, salt, rinses and powders. But often we get not what we expected at the end. Plates and pots are covered with white stains and streaks, and what is more, even the walls of the dishwasher also have such a stain. What causes this unpleasant phenomenon, let’s find out.

How to soften the water?

It’s not hard to guess. a dishwasher needs “soft”, not calcium- and magnesium-rich water! That’s why dishwasher manufacturers “helpers” They have a special ion-exchange system that softens the water.

Tap water is softened while it’s running through a special resin tank, by adding regenerating salt to a special section of the machine.

The sodium chloride ions in the regenerating salt neutralise the hard metal salts. This normalizes the hardness of the water.

Don’t forget to add extra salt to the salt reservoir in the dishwasher. Keep the salt in the dishwasher all the time!

The amount of salt required depends not only on the hardness of the water, but also on the dishwasher’s device.

Some manufacturers sell test strips to determine water hardness. With the manual in hand, it is not difficult to carry out such a test, and then set the dishwasher hardness regulator based on the data obtained.

The most modern and expensive dishwashers have automatic water hardness programming.

Prevent plaque build-up

Regular preventive maintenance will prevent the appearance of streaks. Check water hardness sensor, clean filters and seals. Keep caps tight in salt and detergent compartments. If one is cracked, you should not use the appliance.

If you’ve never serviced your dishwasher yourself, it’s best to call a handyman every six months. It will check the integrity of all the compartments, clean the internal parts from lime scale and dirt.

dishwasher, leaves, white, residue, dishes

Now you know the causes and remedies for the formation of white plaque after the dishwasher. Monitor the hardness of the water, buy only professional products and do not forget to descale the device.

If your dishwasher isn’t performing so well, you need to find out what’s causing it. It’s not necessarily about the breakage, there are a number of factors that may have affected the quality of the sink. Consider each of them.

Hard water

Dishes are white after washing, even white streaks remain on the walls of the PM hopper. This means that the soil in your area contains a lot of limestone. Water that comes from a well in the water supply contains a lot of heavy impurities: calcium and magnesium salts. Sediment is visible on appliance parts, appliance surfaces. Over time the dishwasher components get covered with limescale, which leads to breakage.

Some models of the automatic dishwasher come with test strips. You can use them to find out how hard the water in your pipes. If you look carefully at the faucet, kettle, you can notice how quickly a white sludge forms.

What to do to fix the problem? Find out the water hardness, add the special salt to the salt reservoir, adjust the value on the dishwasher panel (if available). This indication will let you know when the salt has run out and you need to refill it:

To improve the quality of washing and soften the water, the manufacturers have provided a special ion exchanger in the machine. Salt, which is poured into the tank, attracts heavy impurities. The water therefore becomes “soft” as it passes through the ion exchanger.

Details on how to determine the hardness of the water. Read a separate article.

Unsuitable detergent

Appliances have white spots after dishwashing, especially visible stains on glass. Check that the detergent dosage is correct. If you have chosen a low-quality product that dissolves badly, or you have poured too much of it, then it rinses badly.

The 3-in-1 tablet replaces detergent, rinse aid and salt. This is not exactly true. The ingredients listed in the tablet are not sufficient for a thorough wash.

If you use a combination product, we recommend using salt in addition.

Check the dispenser cap after pouring the rinse aid. If it is loose, the detergent is washed out at the washing stage, not the rinse stage.

How to remove stains and avoid their further appearance:

  • Change the amount of detergent until you find the right mixture for your machine. Follow the cycle: if the cycle is short, the whole tablet may not dissolve.
  • Choose a quality detergent. Do not use hand-washing gels.
  • Follow the directions, use the right amount of detergent.

If stains appear on the plates after you have poured the salt, it could be because

Once the correct amount of rinse aid has been poured in, empty the remaining amount into the tray. Screw the lid on tight. If there are cracks, operation is impossible until you replace it.

Breaches in the operating rules

The appliance leaves streaks on the surface of the dishes, and the chamber, sprayers, filter are in lime scale, you can see traces of grease and food residue in the tray. Why does it keep coming back?? Because dishwasher rules are violated:

  • dishes are not cleaned of the food remains before loading;
  • the drain filter is not cleaned after the cycle is complete;
  • The machine can’t be cleaned with a special detergent.

Over time, spray nozzles and filter get clogged with debris, food debris. This is why we recommend cleaning your dishwasher twice a month. Once every six months, it is necessary to run the automatic dishwasher idle, adding cleaning agents. Read here how to clean your dishwasher.

Technical problems

You use a high-quality detergent and you follow the instructions, but the lime scale keeps coming back. How to get rid of it?

How to remove white residue or milky cloudy layer from dishes with BOSCH DISWASHER SMS66GI01I

  • The lid of the dispenser does not fit well, the compartment does not close tightly This happens in models of Chinese production. You can adjust the lid on your own by sharpening the edges to the right size.
  • The hardness sensor is defective. If it breaks, the control module does not receive information, so the water softens badly. If your model has a sensor, it’s better to entrust the diagnostics and repair to a master.

If you notice streaks on cutlery, start by changing the detergent dosage or changing the detergent. Our tips on how to improve the performance of your dishwasher will tell you

Causes of poor dishwashing

What to do if there is a white deposit on plates, pots and utensils after the dishwasher? You always have time to call the service center, so don’t force the issue, but first try to find out why the dishes are white. You might be able to cope without the help of specialists.

Tough water

Most dishwasher spots on dishes are caused by hard water. When the latter contains a lot of dissolved salts of metals, white streaks remain after washing. they are especially visible on dark surfaces. This is the reason why the integrated ion exchangers are installed in the automatic washer and dryer. which supply sodium ions to the water. To ensure that the salt is neutralized by the potassium and magnesium ions, which cause high water hardness, it is necessary to periodically add salt to the salt reservoir in the machine. Not usual table salt, but special. for the washing machine.

If salt compositions not to add in time, the ion exchanger will work worse and worse, and then will fail. will have to spend money for its replacement. Plaque appears. the user is warned that it is necessary to take care of the ion exchanger by adding salt composition to the machine.

The salt consumption depends on the hardness of the water in the region. This information is contained in the instruction manuals for the machines. The reason for the dilutions can also be due to the wrong setting of the appliance. if the hardness is not correct, there will not be enough salt.

Poor quality detergent or incorrect dosage

  • Poorly rinsed powder (overdose or poor quality).
  • Poorly dissolved tablets. This kind of product often leaves streaks, so don’t go for the very low-priced versions.
  • Lack of rinse aid. Rinse aid is compulsory. You have to make the right settings. too much rinse aid is just as bad as not enough. If you overdo it, you get a distinctive iridescent film on the plates. Spending money on rinse aid is not necessary if you use three-in-one tablets.

One should not rely on the presence of salt in combination tablets, it may not be enough for water softening. then it is necessary to add salt composition.

Often users make the mistake of pouring the rinse aid at the same time as the powder. The rinse aid ends up being wasted during the wash. Its services are needed after the 1st rinse.

The effect of any tablet differs depending on the water hardness, load, type of machine, consumption of resources. Each user has to find the best combination of products, dosage, and settings.

Improper use of the dishwasher

If you have tried all the previous versions and the actions taken were not successful, it is possible that the cause of plaque is a technical malfunction:

  • The cover is stuck in the detergent reservoir. This can result in poor washout or undissolved powder pellets.
  • Dishwasher filters are clogged.
  • Spray arm holes are clogged, resulting in low water pressure.

You can fix all of the above-mentioned problems yourself. fix the cover, rinse the filter system, clean the holes in the spray arms. After cleaning the automatic dishwashing machine start it idle with a special descaling and odour remover. For example, you can apply Finish Rinse or Calgonit Fusion Power.

The cover often jams in low-end Chinese PMs. To repair it, it is easier to put a working tray. The second option is to work with a file to adjust the size of the lid to the ideal.

Breakage of hardness sensor

If the dishwasher is equipped with such a sensor, then it is possible that its malfunction has caused the appearance of ditches. Such devices are installed in expensive models to control the consumption of regenerating salts during dishwashing. There is no need to adjust the salt feed in this type of equipment.

If the sensor breaks, the software module receives incorrect information about the real hardness. As a result, there is not enough water softening. There is only one solution. install a new sensor.

How to Fix Dishwasher Leaving White Residue

Low pressure in the water pipes

If the pressure of the water supply decreases, the machine does not work at full capacity, the quality of washing decreases. As a result, the powder is badly washed off, there is still plaque. This phenomenon is especially frequent in the case of wells. You can check the pressure by turning off any faucet: if the pressure is low, you need to find out what’s wrong with the pump, and it’s not the dishwasher’s fault. With a central water supply, you just have to wait for the head to increase. Well, and if low pressure is a constant phenomenon, try to solve the problem with these methods:

  • Clean the coarse filter installed in front of the counter.
  • Install a larger diameter pipe.
  • Install a pump that increases the pressure.
  • Install a storage tank and mini pumping station.

The ion exchanger is broken

If all means are tried, but there is no improvement, the last, most unpleasant variant is left. the ion exchanger is broken. The breakage is infrequent. This happens if:

  • Not replenish the salt for a long time.
  • The salt used was not special salt, but ordinary salt.
  • The hardness sensor is broken (in models that have one).

The ion exchanger isn’t cheap, but you’ll have to replace it to keep the washing machine running.

First reason: scale caused by hard water

Tap water has a lot of impurities in it, including mineral salts. When the whole water mass heats up, the particles begin to settle inside the filled tank. Limescale builds up in the tubes, on machine parts and sometimes on the dishes. Mineral salts gradually build up and form a white deposit inside the dishwasher.

Limescale is the most common cause of washing machine and dishwasher breakdowns. Repair in this case is difficult, if not impossible. So the best strategy is to prevent limescale. That’s why dishwasher manufacturers have equipped all their appliances with an ion exchanger. This compartment is responsible for softening the water with a special resin. You should periodically refill the salt reservoir with a special agent. This will help you prevent limescale build-up.

At first, the lack of salt is not critical. For the first three or four cycles, the ion exchanger does an excellent job of softening the hardness of the water in the dishwasher. However, after the resin supply is gradually depleted, and with each new start it becomes more and more difficult to soften the water. Scale builds up gradually inside the dishwasher and eventually breaks down. You should try to keep your salt with you to avoid this problem.

dishwasher, leaves, white, residue, dishes

Modern dishwashers have a dosing system which allows the salt to be used in fixed dosages. The amount of salt required depends on the hardness of the water. This indicator can be measured by means of a special expertise. But it is unlikely that dishwasher users have the time or money for such measures. That’s why it’s best to buy a dishwasher with a sensor that indicates the water hardness level. It allows you to calculate the amount of salt you need to use, and avoid wasting water softener.

Please note! Some models are equipped with an automatic program for selecting the cycle and the emission of salt according to the hardness of water.

White Film on Dishes

Causes of plaque formation on dishes

White flakes and spots in the dishwasher are lime scale. The water in the centralized water supply system is hard and contains impurities of salts such as calcium, magnesium, etc.п. Owners of an autonomous water system are not immune to this problem either, especially if the water is taken from cracks in the limestone rocks.

When heated, these substances turn into a white sludge called limescale. This is the most common cause of the whitish marks on washed dishes.

The same composition of plaque is formed inside the kettle. To improve the situation, manufacturers have provided a special module in the design of dishwashers ion-exchange system.

It is a container filled with a resinous filler, in which regenerating salt is added. When the water entering the machine passes through the ion exchanger, the chloride ions neutralize the metal salts and soften the water.

The lack of salt or its insufficient quantity leads to the appearance of plaque. And here in the reasons for the absence of this agent should be sorted out.

The appearance of scaling can indicate that the settings are wrong, the salt simply ran out of salt, that this particular product is not suitable for the local water, etc.п. But it also happens that the scaling is a sign of a serious failure.

If the hardness control is not adjusted properly, not enough salt will be delivered to the machine. Often manufacturers complete the device with test strips that allow you to correctly determine the level of hardness in order to set the necessary settings.

In the absence of such strips, you can ask for a certificate from your local water supply company, order a well water analysis, or simply buy a set of such strips. If the quality of washing up is not satisfactory, you need to immediately correct the situation. Otherwise it will only get worse, you’ll have to call a master and pay for expensive repairs.

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