I've got a variation on the "Samsung not draining" theme. My Samsung is a front loader, model WF328AAW/XAA. It started playing the no drain game a little while ago, so I replaced the pump. All was well for about three weeks and now the behavior is back.
But it is draining!! The pump runs just fine. No unusual noise, no fuss. The water is purged from the tub. Then, at 11 minutes left in the cycle, is plays it's little attention chime and throws the "nd" code. I dutifully pull the back off and check the pump and associated hoses for gunk ... but I find nothing. There is a bit of water still in the discharge tube but nothing in the tub (except for wet clothes ... no standing water).
I'm not sure if it's relevant, but my laundry room is backwards. The plumbing is on the right and the dryer vent is on the left, but putting the machines in that way causes the doors to open into each other making it a hassle to move clothes from the washer to the dryer. So I set the machines in opposite ... washer on the left. That means that the discharge hose is stretched tight from the back left corner of the washer, across the back of the dryer, and into the drain standpipe. The drain standpipe is slightly higher than the point at which the discharge hose exits the washer, so the hose is near horizontal, but does slope towards the washer slightly. There is about 6" of discharge hose tucked into the drain standpipe.
So, is there some sensor that needs to be replaced to tell the machine that the pump actually did do its thing, do I need to rearrange my laundry room, or do I need to start looking for a new washer?