I have a WTW6400SW2. Always get 5d code if we use high spin speed or do large load. Also seems to take forever for tub to drain. Related problems? In the past have epoxied exterior of drain pump due to damage from coins so may have broken pump blades/impeller? Also bearings used to make loud noise during spin cycle.

Hi

Error code SD/5d means LONG DRAIN. This error appears when the drain time exceeds 8 minutes and the water valves turn off. After 4 minutes the "Sd" error will be displayed, and then 4 minutes later the F21 error code will be displayed. Press PAUSE/CANCEL two times to clear the display. Please Check the drain hose and make sure it is not plugged or kinked. If the drain hose if fine then unplug the washer and check the electrical connections at the pump and make sure the pump is running. Check the drain pump filter for foreign objects. To access the drain pump and filter remove the front kick panel and trace the drain hose to the bottom of the washer, drain pump would be located there. If you are not able to access it, then replace the back panel as well. Plug in washer or reconnect power. If the issue is still not resolved then you would need to replace the drain pump. Hope this helps...please post back for further assistance.

Daniel