Dishwasher: repair by hand. Basic malfunctions of the dishwasher

The device dishwasher - the device that helps housewives in household chores, is very difficult. Despite this, you can perform some maintenance actions (cleaning filters, additional settings) yourself. Some of the recommendations described in this article will help you to repair the dishwasher yourself.

Let's consider, on what principle these devices work. You can break the entire cycle of washing into several stages:

• Preliminary washing;
• Basic;
• Rinsing;
• drying.

These devices have both normal operating modes, and several non-standard ones. The dishwasher is powered by a water pipe, and the water intake is through a special hydrochloric softener. Water under pressure in the system enters the machine through the inlet valve. The float and pressure switch is designed to regulate the required amount of water. If there is enough water, the water closes and starts to heat up.

It is heated to the temperature required for a certain stage during the washing process. For example, the rinse cycle assumes a high temperature, in order for the drying to occur as quickly as possible.

After the water is heated, it is pumped by means of a pump into the washing area, where it is sprayed around by means of sprinkler nozzles. The jets are directed in such a way that the rotation of the impeller is created.

Water, which has already been used, is used for washing again, it becomes possible due to several stages of filtration. During washing, a certain amount of washing agent is supplied to the work area. Filtration occurs during the entire washing process, and only at the end of the water is discharged into the sewer.

After this cycle ends, it's time to dry. There are several types of this process:

• Turbosushka. In this case, the heated moist air is vented to the outside with the help of a fan.
• Condensation drying. Here the drying is carried out with the help of a temperature that results from rinsing. At the same time, the steam collects on the walls and flows down.

Before washing, all dishes are loaded inside the machine on special shelves, which securely hold it during the whole process. Due to the rotation of the blades of the sprinkler, the water gets to all parts of the dish.

We will find out which faults are most often manifested and how to eliminate them.

The device does not respond to keystrokes. No indication

If there is no indication, the first step is to check the mains voltage with a tester or a multimeter. If the device shows that the voltage is, then without opening the device can not do. For cases when there is an indication, but pressing the buttons to no avail, you can check if the door is closed tightly. If this did not help, it is necessary to analyze and find out why the dishwasher does not work. Repair by one's own hands in this case involves the following actions.

Most machines have a terminal strip near the main panel. Voltage comes to him and with the help of control contacts is distributed further. First of all, it is necessary to open the terminal box and check the quality of the contacts' pulling. Due to the fact that they can oxidize, electrical connections can be disturbed. In this case, it is necessary to clean the contacts, and maybe, then there will be no need for further repair of the dishwasher with your own hands. "Ariston" recommends contacting the original service centers for help.

If the above actions do not lead to anything, you will have to "ring through" the power circuit in order to find out if there is damage. First, drain the water and disconnect the machine from the mains. Using a multimeter, we check the resistance of the conductors, having previously disconnected them from the terminal board. If the wire is intact, the device should show a short circuit, if not - it means the fault is found, and the cable should be replaced. It can be replaced by yourself. Well, if this does not help and the dishwasher does not work, the most correct solution is not at all to repair the dishwasher yourself ("Bosch" as well). However, the manufacturers themselves recommend contacting an authorized service center.

If you have a deep knowledge of electrical engineering, you can try to find a malfunction and repair the dishwasher yourself. This will help the basic circuit of your machine. Again, with the help of a multimeter, it is necessary to check all the elements of the circuit, and in this way you can find the burned or spoiled element.

For those who are poorly versed in electrical engineering, below is a short memo for reading the schematic diagrams:

• For the convenience of finding the faulty part of the chain, abbreviations on these diagrams indicate the color of the wires. Black - VC, TR - yellow-brown, W-VC - black and white, BR-O - brown-orange.
• The terminals are marked on the diagram in the form of circles. These places and are subject to rupture when checking with a multimeter.
• Dotted edging indicates that the contacts enclosed in it are located in a certain block (keypad, relay housing). In order to determine what kind of block it is, it is necessary to read its designation - it is somewhere near the boundaries of the dotted line.

A small digression. The electrical circuit always has both a beginning and an end. The principle is as follows: for the operation of any element of the chain, it is necessary that both plus and minus fit it. When testing the circuit, each element that has a dishwasher is treated like this. Repairs with their own hands in this case will require patience and perseverance.

There is no water supply

If the fault lies in the fact that when the supply is open, the water is not being recruited into the machine, the water supply valve has probably failed or the filter screen has become clogged. These elements can be found near the water inlet, at the bottom, which has your dishwasher. Self-repair involves water shut-off, panel removal and visual inspection of these parts. Clogged mesh must be cleaned with water. With the check of the valve a bit more complicated. Again, you need a multimeter, with which you need to measure the resistance at the terminals of the valve coil. Knowing the resistance, you can draw some conclusions:

• Short-circuiting means that the coils of the winding are closed.
• The resistance is zero - the winding breaks.
• If resistance is present, then it's not the winding, but the valve itself.

However, it will be necessary to remove the valve and purchase a new one, corresponding to the broken one.

Water intake occurs, but washing does not begin

First of all, you need to listen: does the engine work - the main element that your dishwasher has? Repairs with their own hands will be needed in the case of work, and in the opposite case. If it works, it means it could jam the motor or pump. In addition, the windings of the motor could be damaged. Whether this is so, you can check with a multimeter, similar to checking the valve. That is, in the case of faults, we have an inter-turn closure, and if the resistance is zero, the winding breaks. There are few options for solving this problem - either the replacement of the electric motor, or repair in the service.

If the engine does not emit any sounds, you will have to look for a fault in the control circuit, using the help of the circuit diagram.

Does not drain water

The most common causes of this malfunction are cork in the drain or contamination of the filters. Also, it may be in a faulty pump. To check this, it is necessary to remove the pump and check the windings with a multimeter. If you can not repair the dishwasher yourself, Beko and other manufacturers will offer their professional help.

Dishwasher leak

This trouble can occur due to the wear of the seal on the door. Detect wear can be visually, and if it takes place, you need to purchase a new one and replace it. If a puddle formed under the machine, you should find the place where it came from. Most often, water flows from the pump seal, the supply hose or the drainage system. Repair of the dishwasher with your own hands - Bosch and other manufacturers - involves the replacement of these parts.

Strange noises

If instead of the usual noise you hear completely uncharacteristic for the machine sounds, it is worth checking the camera for the presence of glass fragments and metal objects. It is also possible that bearings have worn out. In the event that, in addition to the strange sound you notice the poor quality of the sink, then the wear of the impellers is possible. Checking the camera for foreign objects, you should disassemble the engine and pump to check the wear of the bearings and repair the dishwasher yourself. "Electrolux" advises to purchase original spare parts, otherwise you can lose the warranty.

Water does not heat up

The lack of water heating can be the result of malfunction of heating elements, a temperature sensor or a timer. The state of the heater can be checked by hand, having a multimeter at hand. If the device shows zero resistance, then you have a direct road to the store for the new device. The quality of the operation of the temperature sensor and the timer is very difficult to check independently, because for this it is necessary to know the algorithm of the electronics operation, which is responsible for heating. Repairing the dishwasher with your own hands - Bosch or other brands - in this case requires special vigilance.

Do not dry the dishes

Dishwashers, which have in their functionality the option of turbo-drying utensils, with this malfunction have damage in the power supply chain and windings of the fan. The process of checking the windings is described above, for its execution it is necessary to get to the fan, or rather, its terminals. If the windings of the fan are intact, then the multimeter must check its supply circuit.

When touched to the body of the machine, it is shocked

Repair of the dishwasher with their own hands ("Electrolux" including) tends to replace one part. Most likely, the problem is that "knocked" TEN. It is necessary to switch off the machine and remove the heating element. Visual inspection should detect its defect. In order to make sure that the TEN has been pierced, a small check can be made. It is necessary to lower the element into the salt water tank and use a multimeter to measure the resistance between it and the brine. If it is, it is a breakdown of isolation. However, such a test is not a panacea, some faulty heating elements do not show themselves on this test. Breakdown occurs through the fault of hard water and poor care. Therefore, in order not to have to repair the dishwasher yourself (Siemens, for example, as well as other well-known brands), it is necessary to carefully maintain your device.

Overheating of water in the dishwasher

It happens that, after the water enters the apparatus, steam begins to fall from it, and dishwashing does not begin at that. This is mainly due to a breakdown of the temperature sensor or the heating control system. The thermal sensor most often fails. It is necessary to purchase a sensor with the same characteristics and replace it.

On the dishes are formed white stains and stains

This point indicates that an incorrect amount of rinse aid has been selected for the correct washing process. If universal washing means are used, this effect is sometimes manifested. These tools are designed to simplify the process of dishwashing as much as possible. They contain a conditioner, but to achieve a better result, it should be added separately. To be precise, the opacity on the dishes is a sign of an overabundance of the conditioner. If, as a result, washing dishes are produced in stains, you should reduce the amount of rinse aid added. In this case, you do not need to repair the dishwasher yourself. "Indesit" and other manufacturers advise using professional cleaning products, and then ensure that the dishes will be clean.