The SUD message relates to overdose of detergent detected during the Wash Cycle.
This may signify a bad pump, an extra heavy load, excessive detergent or excessive suds.
If
too much detergent was used, run the washer through a Rinse/Spin cycle,
then a Normal cycle, without adding any detergent. This should clear
the unit of the excess detergent.
Check the drain hose and make sure it is not plugged or kinked. this seems to be the reason as to why your unit is not fixed even after trying to solve F21......
F28 is a communication error which usually means there is a connection
that has come loose. Removing the top and unpplugging and replugging
the connectors in will fix 75% of these codes. If the bottom toe panel
is not on it will also give you an F28.
Good luck
Hello & Welcome to FixYa
F21 error is displayed when the washer is unable
to drain, press PAUSE/CANCEL button twice to clear the display. After this
please check the drain hose and drain pump filter for any blockages and make
sure it is not clogged with foreign particles. You can also check the drain
pump to verify that its working. Please get back to me if you have any other
questions.
Kevin
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