The part(s) or condition(s) listed below for the symptom Washer won't drain are ordered from most likely to least likely to occur. Check or test each item, starting with the items at the top of the page.
Sometimes, small objects or articles of clothing can get caught in the drain pump. To determine if anything is blocking the drain pump, remove the drain pump and check the pump for obstructions. If the drain pump is clear of obstructions, but is still noisy during the drain cycle, replace the drain pump.
Washing machine drain pump assembly. This pump is driven by the main drive belt that also drives the transmission pulley. If the washer does not drain the pump could be locked up or a small object may be clogging it. Also a small leak in front of the washer could be caused by a defective pump.
Sometimes, socks and other small articles of clothing can get into the drain system and clog the pump hose or the pump itself. Remove the hoses from the pump and check for any obstructions.
The lid switch assembly prevents the washer from spinning when the lid is open. If the lid switch assembly fails, the washer will not drain. To determine if the lid switch assembly is defective, use a multimeter to test each of the lid switches for continuity. If a lid switch does not have continuity, replace it.
First, check the drain hose to determine if it is kinked, twisted, or bent. If the drain hose is bent, straighten it out. In addition, remove the drain hose and check it for obstructions. If the drain hose has any obstructions, try to remove them. If necessary, replace the drain hose.