5C, 5E, and nd indicate insufficient draining on the documented Samsung models. SC and SE can be similar readings on the same display; confirm the characters before choosing the guide.
The family appears in the official Samsung USA table. A drain warning can later prevent spinning, without the drum motor being the cause.
If water remains inside
Stop retrying and inspect the external hose: look for crushing, kinks, or an outlet connection that does not follow the manual. If the home drain backs up, that drain also needs attention; a clean filter will not fix a plumbing blockage.
Before accessing the filter, confirm that your model has a user-accessible filter and what its draining procedure is. Disconnect power and let the water cool. Do not remove the plug completely with the tub full: prepare for residual drainage and have the intended containers ready.
If the pump makes noise, do not assume it is pumping well. Note whether the water comes out slowly, in bursts, or not at all. If the code returns after correcting visible restrictions and performing allowed maintenance, request service without opening the pump.
A photo of 5C/5E helps avoid confusing a similar-looking character; include it with the model reference and the water condition when requesting a checkup.