Disconnect the drain hose from the back of the washer. Take a standard garden hose and shove it into the standpipe (the pipe in the wall). Turn the water on full blast. The pressure will often shoot the sludge plug down the main line. If water comes shooting back up at you, the clog is too stubborn for this method.
There is nothing quite as frustrating as the sound of a washing machine beeping “done,” only to open the door and find your clothes swimming in a murky, gray soup. Or worse—you walk into the laundry room to switch loads and feel that squish of soapy water soaking into your socks. clogged drain in washing machine
Safety first: Unplug the washer. Move the machine away from the wall. Locate the drain hose (the big ribbed tube going into a pipe or sink). Place the end of that hose into a bucket on the floor. Gravity will dump the standing water out. Disconnect the drain hose from the back of the washer
A clogged washing machine drain is a nuisance, but it isn't necessarily a disaster. In fact, most homeowners can solve this problem in less than an hour with a few basic tools. The pressure will often shoot the sludge plug