Does the powder remain in the dishwasher? What is the reason?
Your equipment worked fine, but you noticed that there are stains on the plates, pollution is not completely removed. At the same time, the agent is poorly washed out of the compartment. The case may be a violation of the operating rules or a breakdown. Consider all the options.
Why the dishwasher does not wash off the powder
The most common cause of this problem is the improper loading of dishes. If you overload the camera or place an object too large, it may block the compartment. Then the machine does not pick up detergent and does not consume rinse aid.
To correct the situation, it is enough to correctly place the dishes in the baskets.
What else could be the reason why the powder does not dissolve and does not go away:
- The metering valve clogged.
- Poor water supply pressure, which results in insufficient water pressure in the machine.
- Inlet valve malfunction or blockage.
- Problems with the circulation pump.
- Thermostat malfunction.
- Damage to the heating element.
What if fine powder remains on the dishes? Find and fix the problem.
How to restore PMM
If the machine does not pick up detergent well and does the dishes, measures must be taken. You have already made sure that the dishes are located correctly, check the rest of the options.
Metering valve
Open the washing compartment and inspect the valve. If it becomes clogged with powder residues, dirt, you need to clean it. After that, restart the machine. The result is the same? Proceed to the next step.
Water supply and intake valve problems
A weak pressure in the system does not create a strong enough water flow to wash the washing powder. Open the tap and check for water and pressure. Wait until the flow is restored, or contact the plumber.
Gulf valve clogging also contributes to poor water flow. And if the valve is broken, the membrane does not open and does not let water into the system. To check this, you need to take a little dishwasher. In Bosch models, the part is located at the bottom of the chassis. Once you get to the valve, do this:
- Disconnect the wiring chips.
- Take a multimeter and measure the resistance.
- To do this, attach the probes to the contacts of the part.
- A resistance of 500-1500 ohms is considered normal.
- It is possible to check whether the membrane opens or not by applying operating voltage to the valve.
If the membrane does not work, then water does not enter the system and the powder is not washed out. Replace the old valve with a new one and continue operating the equipment.
Circulation pump problems
The pump assembly is responsible for the pressure when it is fed into the chamber. As soon as water is pumped into the system, it is distilled by a circulation unit, supplied to the nebulizers and flies out of the holes with such force to wash off all the impurities from the surface of the devices and dissolve the powder granules.
To check the pump assembly in the dishwasher "Electrolux", "Bosch", "Siemens", you have to remove the bottom.
- Open the camera and remove the lower basket.
- There are screws in the pan that hold the pump. Unscrew them.
- Turn the machine over to the rear wall.
- Unscrew the fasteners around the perimeter.
- Remove the pan.
- Inspect the pump; its tubes may be clogged.
- In case of any malfunction, the circulation unit will have to be completely changed. You can do it yourself, you just need to choose the right replacement for your PMM model.
There are other reasons why the powder can be poorly washed.
Thermostat and heater malfunctions
TEN is used to heat water in the dishwasher. It is clear that at low temperature the product dissolves worse. Heating largely depends on the temperature sensor. How it works: the user installs a program with a temperature of 70 degrees. The heater heats the water, and the temperature sensor controls the temperature. As soon as it reaches 70 ° C, the thermostat gives a signal to the module about the end of heating. TEN is disconnected.
The heater and thermistor are also located under the bottom, in the pump assembly. You can inspect the contacts at the time of burning, damage. If one of the parts breaks, a replacement is required.
If you notice that powder remains in the dishwasher, do not let it slip by gravity. Find out the cause of this phenomenon as soon as possible to avoid serious damage.