F21 has appeared on my Bosch classixx 6 1200 model
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.
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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.
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This should erase the error code and get you running again.
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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.
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Try it several times to see if you get it reset.
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Note, If the start button doesn't flash, just carry on trying to erase the codes.
Yes a few times. Bad grinding sound each time. Looks like I'll have to take it in for repair thxl
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