Error code f-21 is a simple fix on the front of your washer there is a lower panel that can be removed
with three screws. after removing panel you will see a white plastic piece/plug that you can unscrew
(be prepared for water spillage) remove that plug this is called the coin trap clean out this trap and put back together. this should solve your problem
F21
or
F22
CCU / Touchpad / LED assembly error
This error occurs if the touchpad/LED assembly is not able to
transmit/receive data to/from the central control unit (CCU).
Possible Causes / Procedure
1. Check the touchpad/LED assembly by selecting different cycles and
changing the modifiers and options available to confirm the touchpad/LED
is responding.
2. Unplug washer or disconnect power.
3. Check wire harness connections to the touchpad/LED assembly and Central
Control Unit (CCU).
Replace failed component.
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F21 error on a whirlpool uploading AWT9100
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