## Understanding the Humming Sound: What It Means
The humming sound you hear is actually a crucial diagnostic clue. It typically indicates that your washer's drain pump is receiving power and is trying to operate, but something is preventing it from working properly . This is the motor attempting to run but failing to move water out of the machine.
### The Most Common Culprit: A Jammed Drain Pump
If the pump hums but does not drain, the first and most likely cause is a blocked or jammed drain pump. Small items like coins, buttons, hairpins, and lint can get trapped in the pump's impeller or filter, preventing it from spinning .
**Here's how to fix it:**
1. **Unplug the washer** for safety.
2. **Locate the debris filter**—it's usually behind a small access panel at the bottom front of the machine.
3. Place a towel and shallow tray underneath to catch water.
4. Open the panel, pull out the emergency drain hose (if present), and let the water drain.
5. Unscrew the filter plug (turn counterclockwise), remove any debris, and rinse it clean.
6. Reinstall the filter securely.
Samsung's official troubleshooting guides confirm that grating or humming noises during operation often point to debris in the filter, and cleaning it is the recommended first step . If the humming persists after cleaning, the pump motor itself may have failed and require replacement .
### Other Potential Causes to Check
If cleaning the filter doesn't resolve the issue, consider these possibilities:
- **Kinked or Blocked Drain Hose**: Ensure the hose isn't bent, crushed, or inserted too far into the standpipe, which can cause drainage problems .
- **Unbalanced Load**: If the washer is humming but also not spinning, it may be trying to spin with an unbalanced load . The machine will often reduce speed or stop to prevent damage. Pause the cycle and redistribute clothes evenly.
- **Excessive Suds**: Using too much detergent can create excess foam, interfering with the spin cycle .
### When to Call a Professional
If you've cleaned the filter, checked the hose, and redistributed the load but the problem persists, the issue is likely a defective drain pump or a control board problem . In this case, it's best to contact Samsung Support or an authorized service center for professional diagnosis and repair.