LG WM9000H*A Service Manual page 22

SUD ERROR
WIFI ERROR
If the washing machine detects too many suds, it
displays this error code and adds a Suds Reducing
cycle. This adds about two hours to the cycle time.
If too many suds are detected during spinning, the
washing machine stops to help prevent leaking.
WIFI Modem is not connected.
WIFI Modem Self Check function Error
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