LG WashCombo WM6998HBA will not drain or stops with water inside

The checks in more detail

Then the drain pump filter. On LG front-loaders it sits behind a small cover at the lower front, and traps coins, hair pins and lint. Put towels and a shallow tray down, unplug the machine, open the cover and drain the trapped water by unscrewing the little hose cap, then unscrew the filter slowly, remove what it holds and look into the housing for anything blocking the pump impeller. Refit the filter firmly, since a loose one leaks. With a WashCombo, check the condensate path too: water from the dryer's condensing system collects in the same drain, so a blocked path after drying can make the machine think it has not emptied. Run a Drain and Spin cycle to test.

If water still does not leave and you hear the pump humming, the pump or its wiring may have failed, a repair for a technician. A pump that makes no sound at all points to power or the control. Overloading and too much detergent can cause suds that block the drain sensor, so use less and run a rinse. Clean the washer with the Tub Clean cycle monthly, and leave the door ajar to dry. Keep the model and serial numbers from the label for LG support, and check the warranty. The WM6998HBA is an LG WashCombo, a combined washer and heat-pump dryer, and its drain has an extra place to look: the condensing filter and the long internal drain path that serve the dryer side.

If the washer will not drain, the drain pump filter is the first stop, but the OE code can also appear because lint has built up in the condenser area. Check the manual for the location of the filters, clean the lint filter and run the Tub Clean cycle once the drain is free. Avoid overloading the drum, since a heavy wet load slows the pump. The drain hose of a WashCombo needs to sit within the height range LG gives; too high a hose stops the flow, and too low a hose lets water siphon out during the fill. Allow the machine to rest a few minutes after a failed drain before trying again.