The water isn't going into the drummer and then the electronic panel starts beeping and the washing machine stops working on the avanti w789sa

SOURCE: avanty w789SA

its the drainage problem .so either the drainer is getting blocked or the drainer is cracked and got faulty so needs to be replaced.

This often is a drain hose that is too low or a drain hose that has been pushed too far down inside the stand pipe....the water is actually siphoning out of the washer. Do not "seal" the drain hose to the house plumbing pipe, this will also allow the water to be siphoned out.

SOURCE: Avanti W789SA Water valve problem

Where do you live.I know some chenese guys who sell the spare parts.