Error E2 in a Bosch washing machine

Error E2 in a Bosch washing machine The fault self-diagnosis system may display error E2 on a Bosch machine (or E02, depending on the model). The instructions for the machine will help you decipher this code. Let's figure out how to repair the equipment, what kind of breakdown the code informs about.

"First aid" and decoding

What to do if the washing machine stops working and displays an error on the screen? You need to try to correct the situation and figure out what kind of breakdown the machine is “hinting” at. Code E2 (E02) informs about problems with the commutator motor.

Error E2 is considered critical; if the fault is not corrected, the electrical wiring may be damaged or the engine may burn out.

Equipment repair is not always necessary; you can try to reset the error code without interfering with the machine mechanism. Be sure to check the voltage in the electrical network, in case it is simply not enough for the machine to operate. If the power supply is weak, call an electrician.

The cause of error E2 may be a short-term failure of the control module due to a power surge. Try unplugging the washing machine for 20 minutes, then turning the machine back on. On some Bosch models, you will have to force reset the code by following these steps: engine problem

press and hold the “Power” key;
Turn the programmer from the standard position (“off”) two clicks to the left. During this, the “On” button must be held;
wait a couple of seconds and release the Power key.

After this procedure, the Bosch washing machine will display on the display the cycle time of the washing program indicated by the selector handle.On machines without a screen, the indication on the control panel should “blink”.

If such actions do not help reset the error code, then a real breakdown has occurred. It is necessary to diagnose the washing equipment motor and repair the unit.

Let's take it out and check the motor.

What to do if you find code E2 on the machine display? As already mentioned, the error indicates problems with the washing motor. How is this machine unit arranged?

Bosch machines are equipped with a commutator motor. The engine is small in size but has high power. The rotation is started by a drive belt that connects the drum pulley and the motor.

The collector of Bosch washing machines consists of a rotor, a stator and a pair of electric brushes.

A Hall sensor is also installed on top of the engine. This device regulates the engine speed. The machine may not start washing also due to problems with the tachometer.

Masters diagnose the “heart” of the machine in several ways. However, in any case, you will have to remove the motor from the housing. The algorithm of actions will be as follows: how to remove the motor

Unscrew the bolts securing the back wall of the machine, move the panel to the side;
by rotating the drum “wheel”, loosen and remove the drive belt;
disconnect the wires going to the motor;
unscrew the screws fixing the engine in the housing;
carefully remove the element by rocking it in different directions.

It is recommended to take a photograph of the wiring connection diagram to the engine so that you can then accurately install the part in place.

Now that the engine has been removed, you can begin to diagnose it. First of all, you should connect the wires of the stator and rotor windings. After this, they are supplied with a voltage of 220 Volts.If rotation is observed, then the reason is not in the electric motor, because it is functioning properly.

The main disadvantage of this diagnosis is that it will be incomplete. The washing machine, in fact, works on different programs that differ in spin speed and smooth rotation of the drum. And during such actions, only one mode is checked. The second drawback is that the motor may overheat due to direct connection to the network, which will lead to a short circuit. Therefore, before applying voltage to the stator and rotor, it is better to connect a “ballast” - a heating element - to the circuit, this will help protect the engine.

Brushes worn out

In most cases, replacing the commutator electric brushes helps eliminate the E2 error code. The carbon rods are located on the sides of the engine. The brushes have a wire through which electricity passes, and a spring that presses them against the lamellas. Finding the details is easy - they cannot be confused with anything.

To reinstall the elements, you must remove them from the engine. Even if only one brush is worn out, it is necessary to change the pair. Let's figure out how to remove erased parts from the engine. The algorithm of actions will be as follows: replacing brushes

using a slotted screwdriver, lightly pry up the wire terminal and remove the cable;
move the electric brush contact away from the wiring;
very carefully pull the terminal up. The spring-loaded carbon rod will pop out and can be removed.

When pulling out the electric brush, be sure to remember which edge it was on, so that later you can “stick” the part in the same way.

Once both brushes are removed, inspect them. If the elements are severely worn, replacement will be required. You can buy new spare parts at any specialized store, specifying the model and serial number of the Bosch washing machine.

Installation proceeds as follows:

insert the brushes into the motor traverses as they were before;
push the spring there;
Insert the terminals into the clamps of the upper area of the traverses, move them towards the wire. Thus, the electric brushes will be fixed in the motor.

After this, all that remains is to connect the power supply connector to the terminals. When both brushes are installed in the engine, you should check that all contacts are connected securely. The repair is complete, you can reassemble the Bosch washing machine in reverse order.

If these steps do not help in eliminating error E2, then it is better to seek help from a technician. It is likely that more complex repairs or even replacement of the electric motor will be required. Perhaps the problem lies in the “brain” of the washing machine, and diagnostics of the control module is necessary.