Washing machine displays error code E20, E21 or C2, emits 2 beeps or 2 flashes | Electrolux
Washing Machine Causes Drain To Overflow – Basement Issues and Problems
Unclogging a Washer Drain
LG washing machine drainage] Water cannot be drained. Water is not drained. | LG USA Support
Washing machine won't drain? Here's how to unblock it | Trusted Reviews
What's happening below in that drainage pipe in the middle that causes it to overflow when the washing machine drains? Is it just a clog that could be snaked by a plumber