Motor brushes replaced but fault F21 still indicated in the display panel. How do I get the machine to work ?

F21 (or E21) normally indicates a fault with the motor or the main control board. ... If the error code returns, you have a problem with the motor (most likely carbon brushes), wiring or main control. If the machine won't go into diagnostics to erase the error code, it would suggest a faulty control board.

F21 is motor fault - check the carbon brushes in the motor and replace if needed.

But first please try to reset the machine, turn the program knob from the off position (12 o'clock) to the 6 o'clock position and immediately press and hold the spin button. Then while holding the spin button turn the knob to 7 o'clock position and continue holding spin button for 15 seconds.

Hope this helps and good luck.

F21 is a motor fault and in some cases can also involve a module fault. It could be as simple as the brushes need replacing or the drum has been severely out of balance.

There is no reset as such, if the motor shorted when the motor brushes went there is a good chance that it blew the motor tracking or relay on the board. Sometime this is indicated by F20 or F21. Unfortunately this will be a new board. You could try to run a motor test as follows:
Hold in the start button while turning the dial one click to the left (30 easycare) wait until the display shows 888 or two indicators light up next to dial.
Release start and turn dial to 60 cotton (WITHOUT GOING THRO THE OFF).
Press start
This should start a motor test
slow turn one way, slow turn the other, pump on then up to full spin.
(some machines will show the rpm on the display).
If this does not work, you probably need to change the module aswell.
Best of luck

F21 normally indicates a fault with the motor or the main control board. It could be the motor brushes need changing.
If you've changed the brushes you now need to erase the stored errors and try the machine again.
.
Turn the knob to off.
Close the door.
Turn the knob to 6 o'clock position.
Wait 2 seconds.
The start/pause should begin flashing.
Press and hold the spin button. (the spin button is the one that changes the spin speed, it may be marked "RPM")
Turn the knob to 7 o'clock position.
Wait 2 seconds.
Release the button.
Turn the knob to off.
.
This should erase the error code and get you running again.
.
If the error code returns, you have a problem with the motor, wiring or main control.
If the machine won't go into diagnostics to erase the error code, it would suggest a faulty control board.
.
Try it several times to see if you get it reset.
.
Note, If the start button doesn't flash, just carry on trying to erase the codes.

F21 relates to a motor or control board fault.

However, it is also caused by spikes in the mains and can be spurious.

To reset it.

Turn the appliance knob to the off or reset position, 12 o'clock.

Turn the knob to the 6 o'clock position.

Press and hold the spin button.

While holding it, turn the knob to the 7 o'clock position.

Continue holding the spin button for about 5 seconds.

Release the button.

Turn the knob to off.

When your turn it back on it should have cleared the error code

it is a motor or pcb fault this is a reset code as follows,
turn dial to off 12 0clock position then turn to 6 oclock,
press and hold the spin buttonat same time turn it to 7 oclock,continue to hold the spin buttonfor 5 seconds,release button,turn off.
next time you turn on the error code should have gone ,
if it does not work go through the proceedure again i had to try it 3 times but it does work

I have a Bosch Classixx 6 1200 express washing machine showing error code F21 on the display, what is it?