Drain pumps are parts that pump the water in your washing machine and drain it at the end of the washing cycle.
Once the cycle is over, if you find water in the drum, it's because your washing machine didn't drain the water. In that case, the drain pump is clearly at fault.
If you hear a whirring instead of the usual noise your machine makes while draining, spinning or at the end of a cycle, you need to check your drain pump!
If it's broken, replace it as soon as possible! We have many different models on our site!