Error F57 in a Bosch washing machine

Error F57 in a Bosch washing machine Only owners of modern Bosch models equipped with an inverter motor may encounter the F57 error code. This code clearly indicates a problem with the direct drive and requires immediate attention. What does this code mean, where can you find the culprit, and how can you resolve this technical issue?

Where did this code come from?

While belt-driven washing machines will never display "F57," modern models with inverter motors sometimes make this error. The cause of the failure lies in a simple power surge that affects the system's elements that are sensitive to current surges.From the outside, the situation appears like this: during the wash cycle, the indicator lights on the dashboard dim slightly, then brighten again a second later. But this seemingly harmless phenomenon inside the washing machine's body significantly impacts the electronics, and in recently released machines, this is precisely what holds everything together.

Error F57 indicates a failure of inverter motor components.

Modern washing machines consist of several sensitive electronic components that transmit information from one component to another. However, there is no built-in protection against power surges, and most users don't connect a dedicated stabilizer to the machine. While power surges are common in Europe and the machine functions normally, in Russia, even a second's fluctuation can cause problems with the inverter.

The inverter motor is one of the most sensitive components of the washing machine, and error F57 indicates three possible problems with it:

burnt out power module;
loose contacts between the power and inverter modules;
broken inverter module.

It's logical to correct the situation by sequentially checking all the "weak" points on the inverter motor. We'll demonstrate how to do this in each case below.

Checking and troubleshooting

If the F57 error occurs, repair involves testing the power and inverter modules. It's best to start with the latter, as it's most often affected by power surges. Here's how to proceed: We check the inverter module

we disassemble the machine;
we find the inverter module – the board to which the connectors with wires are connected;
we take a photo of the wiring diagram;
we extract the part.

Next, turn on the multimeter and test the power supply circuit. First, focus on the starting resistor, which burns out in 55% of cases. Replacing it will be much cheaper, as a new resistor costs about 20-30 cents, while the entire module costs $180-190.

If you're careful and cautious, you can replace a module or resistor yourself. Simply confirm the component is faulty, remove it, and solder a new one in its place. However, those new to electronics should avoid experimenting and call a service technician.

Resetting the error

Once the inverter module has been repaired or replaced completely, there is one more step that needs to be taken – reset the error code by rebooting the system. You can handle this task yourself, but only if you strictly follow the instructions. So, turn on the machine, wait until F57 appears on the display and start the reset.

Turn the gear selector to the off position.
Switch to "Spin".
Find the “Drum speed” button on the dashboard and press it.
Continuing to press the button, we turn on the “Drain” program.
We count to three and release “Drum Spins”.
Immediately turn the knob to the “Super Fast 15” mode.
After 2 seconds, turn off the machine.

After these steps, the system will "forget" the error and launch the selected program without any problems. If you don't get rid of F57 the first time, try again, following the instructions provided.