My washer displays "nd" and sounds a siren then stops- every time it drains. Before stopping, I can hear it draining but instead of draining quickly and fully, it drains in a trickle and slowly and then just stops and displays the nd message. I tried to stick a coathanger down the drain pipe but it only went 3/4 of the way and nothing came out. I am assuming that there is something down there. I thought maybe it was build up from regular washing detergent (after the nd problem I looked in the manual and discovered that I should have been using high efficiency soap for the past 2 years. I had been getting a "suds" message the entire time, but didn't realize there was a problem because the cycle always completed). I am using the correct kind of soap now, but it takes days for 1 load to finish because I have to hit the start button every few minutes because the machine won't drain fully.

Please instruct me on how to do that. How do I access it correctly?

i removed the back cover. The hose runs along the side and connects to a pump in the front of the unit. I am unable to reach the pump from the rear of the unit due to the tub, pulleys, etc. It does not seem feasible to remove everything to get to the front. I went to the front and removed the bottom plastic cover. This exposed a metal plate that was attached with non removable rivets and 3 screws holding the upper face of the machine. I removed the 3 screws and tried to pull off the front of the machine but it only dangled.
I have a dryer attached to the top of my washer. I am wondering if I removed the dryer, would the top of my washer pop off and allow me to remove the face? If so, I would be able to access the pump from directly on top of it rather than from the rear (can't reach or see clearly) or the front (blocked by metal framing of unit).