Ben K Kennesaw , GA March 10, 2017 Appliance: Samsung Washer WF419AAU/XAA-0000 Samsung Washer Wf419aau/Xaa-0000 / : Nd error code (was not draining). How to replace Drain Pump Assembly. Removed the top, front and then the pump and replaced. Reassembled. Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours