Before diagnosing the issue, you must safely handle the electricity and empty the water trapped in the drum.
Unplug the washing machine from the wall outlet to eliminate any electrical shock hazard.
Once your drain is flowing freely, keep it that way with these four habits:
Place thick towels and a shallow baking pan or tray beneath the bottom front of the machine.
The flexible hose that runs from the back of your machine to the standpipe or utility sink can become kinked or clogged with lint and undissolved detergent.