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F21 and and Suds means that the washer isn't draining properly. There is a drain catch inside the washer that you will want to access and clean if you're getting this drain error. To access the drain catch, tip the machine backwards and lean it against the wall at a 45 degree angle or so. Remove the 3 screws along the bottom of the lower front panel. The lower front panel will then pull down and off. There is a 3" diameter plastic twist cap directly under the tub mounted to the floor. This is your drain cap. Unscrew the cap and clear any debris inside the drain catch. If you find nothing and the drain hose is clear, replace your drain pump.
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