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Quick answer
Turn off the washer and unplug it. Check the drain hose for kinks or clogs, clean the pump filter, and ensure the drain pipe is clear. If the issue persists, the pump or drain valve may need replacement.
Confirm the symptom
- Water remains in the drum after cycle ends
- Washer makes gurgling or humming noises during drain
- Drain cycle takes longer than usual
- Water backs up into the tub or floor
Tools and prep
- Screwdriver (flathead or Phillips, depending on model)
- Bucket or container for water collection
- Flashlight
- Plumber's snake or wire hanger (straightened)
- Work gloves
- Unplug washer to ensure safety
- Turn off water supply if accessing valves
Step-by-step troubleshooting
- Check Drain HoseDo: Locate the drain hose at the back of the washer and inspect for kinks or clogs.Observe: Hose is clear and properly connected.Means: No blockage in the hose.Next: Proceed to pump filter inspection.
- Inspect Pump FilterDo: Find the pump filter access panel (usually at the front or bottom of the washer) and remove it. Clear any debris or lint.Observe: Filter is clean and free of obstructions.Means: Clogged filter was the issue.Next: Run a test cycle to see if the problem is resolved.
- Check Drain PipeDo: Inspect the drain pipe connected to the home's plumbing for clogs or improper slope.Observe: Drain pipe is clear and sloped correctly toward the sewer or drain.Means: Clogged or improperly sloped drain pipe was the issue.Next: Clear the clog or adjust the slope if necessary.
- Test Drain PumpDo: Listen for the drain pump to activate during the cycle. If it doesn't run, the pump may be faulty.Observe: Drain pump runs but does not move water effectively.Means: Pump is not functioning properly.Next: Replace the drain pump if it's faulty.
- Examine Drain ValveDo: Check the drain valve for debris or damage that could prevent it from opening fully.Observe: Valve is clear and opens without resistance.Means: Clogged or damaged valve was the issue.Next: Clean or replace the drain valve as needed.
- Run Test CycleDo: Plug in the washer and run a test cycle to see if it drains completely now.Observe: Washer drains completely without issues.Means: Problem is resolved.Next: No further action needed.
- Check for Error CodesDo: Consult the user manual to see if the washer displays any error codes related to drainage.Observe: Error code indicates a specific issue.Means: Error code provides a clear diagnosis.Next: Follow manual instructions for the specific error code.
Common causes
| Cause | Likelihood | Difficulty | Part often needed |
|---|---|---|---|
| Clogged Drain Hose Lint, debris, or kinks in the hose prevent water from draining. | Common | Easy | None |
| Clogged Pump Filter Debris and lint accumulate in the pump filter, blocking water flow. | Common | Easy | None |
| Clogged Drain Pipe Hair, soap scum, or other debris block the home's drain pipe. | Sometimes | Medium | Plumber's snake |
| Faulty Drain Pump The pump motor or impeller is damaged and cannot move water. | Sometimes | Medium | Drain pump |
| Clogged or Damaged Drain Valve Debris or mechanical failure prevents the valve from opening fully. | Sometimes | Medium | Drain valve |
| Improper Drain Pipe Slope The drain pipe does not slope correctly, causing water to pool. | Rare | Hard | Pipe adjustment |
Parts matching
If you need to replace parts, match your washer's model and brand for compatibility.
- Drain pump (ensure correct model number)
- Drain valve assembly
- Pump filter (if replaceable)
- Drain hose (check diameter and length)
- Plumber's snake or drain auger
Take the old part with you to the store to ensure an exact match.
When to call a professional
- Water continues to back up or leak after trying all steps
- Drain pump makes loud noises or fails to activate at all
- Error codes persist after troubleshooting
- Drain pipe clog is deep or inaccessible
- You're unsure about electrical connections or plumbing repairs
FAQ
Can I use a chemical drain cleaner for the washer drain?
Avoid chemical drain cleaners as they can damage the washer's components and plumbing. Use a plumber's snake or manual cleaning instead.
How often should I clean the pump filter?
Clean the pump filter every 3–6 months to prevent clogs and maintain proper drainage.
Why does my washer drain slowly even after cleaning the hose and filter?
A partially clogged drain pipe or a faulty drain pump could still be the cause. Check the drain pipe or test the pump.
Is it normal for some water to remain in the tub after a cycle?
A small amount of water is normal, but if it's significant, there's likely a drainage issue that needs attention.
Can a faulty lid switch cause drainage problems?
No, the lid switch affects the washer's operation but not the drainage system directly. Check other components first.