I tried cleaning it out, but that did not correct the problem, so I ordered a new pump and replaced it. The replacement took about 15 minutes. When I plugged the unit back in, the washing machine still would not work, but after doing a Google search, I read how to clear error codes and get the unit back working again, which simply was a matter of pushing some of the buttons in a specific series. (I could not find this info in the owner's manual.) The washing machine then came back on and functioned as it is supposed to and our Housekeeping crew made me their hero of the day!