A washing machine that won’t drain is more than just an inconvenience—it can lead to foul odors, damaged clothes, and costly repairs if left unresolved. Fortunately, many drainage issues can be identified and resolved with some basic troubleshooting. This guide walks you through the common reasons your washer isn’t draining and what you can do about it.
Common Causes of Drainage Issues
Several factors can prevent a washing machine from draining properly. The most common include:
- Clogged or kinked drain hose
- Faulty drain pump
- Obstructed pump filter
- Malfunctioning lid switch
- Worn-out drive belt or faulty motor
- Clogged plumbing or standpipe
Initial Safety Steps
Before attempting any troubleshooting, always follow these safety measures:
1. Unplug the Washer
Always disconnect the appliance from power to avoid electrical shocks.
2. Shut Off Water Supply
Turn off the hot and cold water valves to prevent leaks.
3. Prepare for Water Drainage
Place towels and a shallow pan around the washer in case water spills during disassembly.
Step-by-Step Troubleshooting Process
Check the Drain Hose
🔍 What to Look For:
- Kinks or bends in the hose
- Clogs from lint or small objects
- Proper hose height (should be 18–30 inches above the floor)
🛠 What to Do:
- Detach the drain hose from the back of the washer.
- Inspect it for clogs or damage.
- Use a long flexible brush or garden hose to flush out debris.
Inspect the Drain Pump
🔍 Symptoms of a Faulty Pump:
- Humming noises but no water drainage
- Visible debris inside the pump
- Leaking around the pump housing
🛠 What to Do:
- Locate the drain pump (usually accessible from the front panel).
- Remove any visible lint, coins, or small objects.
- Test for continuity using a multimeter.
Examine the Lid Switch
🔍 Signs of a Faulty Switch:
- Washer won’t enter the spin or drain cycle
- No clicking sound when closing the lid
🛠 What to Do:
- Use a screwdriver to access the lid switch mechanism.
- Test the switch with a multimeter.
- Replace if there’s no continuity.
Test the Washer Belt or Motor
🔍 Symptoms:
- No spinning or agitation
- Burning smell or unusual noise
🛠 What to Do:
- Remove the back panel of the machine.
- Check the belt for wear or slippage.
- Inspect the motor and replace parts as necessary.
When to Call a Professional
If your washer still won’t drain after checking all components—or if you’re uncomfortable performing electrical tests—it’s best to contact a certified appliance repair technician. Signs it’s time to call for help include:
- Strange electrical smells
- Water leaking from under the machine
- Washer error codes that persist after resetting
Preventive Maintenance Tips
To avoid future drainage issues:
✅ Clean the Lint Trap and Filter Regularly
Many machines have small, removable filters that catch debris.
✅ Use the Right Detergent
High-efficiency (HE) detergent reduces soap buildup that can clog pumps and hoses.
✅ Don’t Overload the Washer
Too much laundry strains the pump and may prevent complete drainage.
✅ Perform Routine Inspections
Check hoses and seals for wear every few months.
Conclusion
A washing machine that won’t drain can often be fixed with simple tools and a bit of patience. From checking the drain hose to inspecting the pump and switches, these steps help you narrow down the issue and potentially fix it yourself. If all else fails, a professional repair can save your appliance from further damage.