If you have a washing machine with a screen: electronic (with LCD display) - and the error is on f20
If you have a mechanical washing machine (without a display) with a programmer, then the light for the number of revolutions is 600 and 800 (or a thousand)

Content
What does this error code f20 mean?
The heater heats the water, although you set the program without heating the water.
Bosch error display signals
During washing, the washing machine stopped and hung, did not respond to the buttons.
We check with our own hands - we decide
- Perhaps the washing machine is frozen, a reboot is needed, unplug it from the mains for half an hour, let it rest.
We replace and repair
- The timer or pressure switch (water sensor) is out of order
- We repair the electrical module or replace it.
- Replacing the heating element, the electric tubular heater failed.
Carefully! If a power outage occurs, be careful, trust the professionals!

Other washing machine errors:
