I want to know how can i cleare the erro f21 about siemens washing mechine.

its a motor tachometer fault, basically the tacho on the motor (you cant get it as a spare part it comes with the motor) is faulty or the control board is faulty and the machine is unable to detect the speed of the motor, the motor may work but if the board cant detect it moving you will get this fault, fun thing about this kind of fault is theres no easy way to determine whether its the board or the tacho

Try this, unplug it and press and hold down the power button for 10 seconds and then plug it back in and see if the error code has cleared.

Motor has failed or brushes worn out.

Many thanks. For F21 fault everyone was talking about the drain valve but found one answer related to power supply n board this helped. Resetting by turning program switch to 12 o clock then turn to 6 o click then keep spin button pressed n move knob to 7 o clock position. Then release spin n move knob to 12 o clock. This way F21 got resetted.

washing mechine wont spin or drum stopped going around .siemans xli1240

Hello,

If you found a blockage in the pump screen restricting the drainage and it now drains fine but F21 is still there,the error code can be cleared by pushing the PAUSE/CANCEL 2 times within 2 seconds.
If after clearing the error code if it returns on the next wash cycle the pump will need to be replaced.

I hope this has helped you resolve your washer troubles,
Gene

i think f17 is the code for low water pressure, check the water supply to the machine is turned on and the hose is not blocked or kinked or pinched

Am havin d same problem how do I fix it

Sharon

F21 Long drain Possible cause: Clogged filter, clogged/failed pump. Get the bottom panels screws out and remove it. Tech sheet with erro codes and diagnostics are behind the white motor control box to the left.

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

"F21" is a long drain error code. I have a link that you may try to see if there may be some additional things you haven't tried yet:

http://www.fixya.com/support/r1484065-f21_error_code_whirlpool_duet_kenmore

Try unplugging the washer for at least 30 minutes (if you haven't tried that already). This will reset the Central Control Unit (CCU). This is the main "brain" of your washer. Sometimes this is all that is required to correct momentary glitches. If the error code reappears, check your drain pump for obstructions. This is the most common cause. If you still have questions, please let me know. I hope this helps you.