An outline of the dishwasher may be needed if a malfunction occurs. It is important to understand what units the machine consists of, what functions they perform. The electrical circuit of the control module will come in handy if you decide to do an independent repair of the PMM. Let's consider in more detail all the details.
Our publication will be useful not only to those who want to repair equipment, but also to those who want to understand the principle of the dishwasher. It is important to know how the parts function in order to keep the PMM in order.
Dishwasher device
The location of the nodes may vary slightly, depending on the make and model of the PMM (Bosch, Electrolux, Siemens, Hansa). But the main device of the dishwasher is the same, regardless of the type of installation: built-in or freestanding.
Some users believe that the compact machine is different from the standard size technique (45-60 cm). This is not true. The difference is only in the dimensions of the case.
Dishwasher layout
Let's see which nodes are responsible for what:
- Basket. Designed for placing dishes. Baskets can be from two to three. There are also special compartments for knives and cutlery (depends on the configuration of the PMM "Ariston", "Electrolux", "Elenberg" and others).
- Springs. Serve for careful closing of a door. Thanks to the closers, the door does not slam, but gently closes.
- Impellers. Both integrated and freestanding appliances can include from one to three impellers. Water is supplied by a circulation pump to the nozzles and flies out of their nozzles. High pressure jets wash dirt off dishes.
- Thermal relay. Regulates the temperature of the water during operation. Each program provides a specific temperature: 50, 65, 70 degrees. When the heater heats the water, the thermal relay determines whether it is sufficiently heated.
- Filter. It is located in the pan of any dishwasher (Kuppersberg, Whirlpool). Delays food particles, debris that fall into the pan with water.
Experts recommend cleaning the filter regularly so that the equipment functions normally. It is advisable to do this after each wash.
- Drain hose connects to the pump and serves to drain the waste water.
- Pressure switch. Determines the water level in the chamber. Thanks to him, the car takes as much as you need in the selected mode.
- Drain pump. Pumps water out of the chamber.
- Water intake serves as a store of water for further washing.
- Aquastop system. It happens electronic and mechanical. The first is located in the pan: as soon as water accumulates there, the float sensor is activated, and the control board receives a leakage signal. Mechanical protection is located in the inlet hose: when triggered, a special sponge swells and blocks the flow into the system.
- The electronic unit. This is the main module that manages all the nodes in the dishwasher.
- Circulation pump. It supplies water to the nebulizers, takes it back after filter cleaning, and uses it again for the next washing step.
- Network filter. Protects the electronic part of the machine from burning during power surges.
- Detergent dispenser. Contains compartments for powder, rinse aid, tablets.
- Filling valve. The board sends a signal to the valve, its membrane opens, and water is poured into the chamber. Once it is typed enough, the membrane closes.
- Door seal. Serves for tight adhesion to the surface. Seals and protects against leakage.
- Salt container lid. This is a special tank where salt is poured. It protects machine parts from scale by softening the water.
In many Indesit, Bosch, and Ariston models, an ion exchanger is installed. It contains resin, which reduces the hardness of the water, which positively affects the operation of equipment and washing dishes.
- TEN. A heating element. How to replace the heater in the event of a breakdown, read in one of the previous articles.
- Inlet hose. It is he who is often equipped with the Aquastop system.
- Guide allows you to quickly and easily set the basket with dishes in place.
It looks like this bottom of the dishwasherWhere is the circulation pump located:
Electrical components PMM:
Schematic diagram of convection drying
If the PMM is equipped with a dryer, then it can additionally be equipped with a fan that pumps hot air into the chamber.
- MV - fan motor.
- TY6 - connector through which the electric motor works.
- PU - switch contacts.
- IP - door switch.
In such machines, a heater is additionally built in, which heats the air.
Electric circuit
After installation and installation, the dishwasher is connected to a 220 Volt network. Work takes place according to the electric circuit:
Where:
- X1-2 - lock pads.
- SO 1-4 - switches.
- SL - relay RU-ZSM.
- EV - KEN-1 valve.
- EK - NSMA heater.
- H1-H3 - LED IC-31.
- H2-H4 - LED IC-34.
- MT - electric motor ДСМ 2-П.
- M - electric motor DAV 71-2.
- C 1-2 - capacitors;
- KL1 - clamp for grounding.
- FV - fuse connection point.
- SK - relay sensor.
A more complex device provides a control module with manual adjustment of programs. This is convenient when you need to set the temperature.
If the control module malfunctions, you can check it yourself. When disassembling, pay attention to burnt parts: they may need to be replaced. The main board is hidden in the case:
The main components of the circuit board on Bosch and Siemens dishwashers:
And this is how the BIT 100 and DIWA board for Indesit and Ariston look like:
Thanks to the device of the control module, the machine can perform self-diagnosis of breakdowns. When a problem occurs, the system immediately displays an error code on the display. The decoding depends on the PMM brand, you can find it in the instructions and our articles.
Watch a useful video, where it is available about the operation of the machine: