Check the troubleshooting manual
Check your manual for what to do if your washing machine won’t drain.
Check drain hose problems
Remove the drain hose from the back of the washing machine. Run a moderate to high pressure water stream through it. If it is clogged, this should force the clog out. Replace the hose on the washing machine following these few simple steps: the outlet is not more than 2.8 feet (85cm) from the floor; the end of the hose is not more than 4.5 inches (11.4 cm) into the drain hole; the drain hole is not taped shut; and the hose is not bent. Then run a rinse/spin cycle.
Most likely, this will help you through the problem. If it doesn’t, something may have gone wrong inside, so you should call on the professional help of a repair man. Either way it is important that your washing machine works properly, so take care of the problem right away. And for perfect cleanliness we have another suggestion: choose a laundry detergent that gives you outstanding results in only one wash, like Ariel Power Gel.