Why Won't My Washing Machine Drain?
A washing machine that refuses to drain is one of the most common appliance problems homeowners face. The good news is that in many cases, the fix is straightforward and doesn't require a professional. This guide walks you through the most likely causes and how to resolve each one.
Tools You'll Need
- Flat-head and Phillips screwdrivers
- Pliers
- Bucket and towels
- Flashlight
- Replacement drain pump (if needed)
Step 1: Check the Drain Hose
Start with the simplest fix. Locate the drain hose at the back of the machine and inspect it for kinks, clogs, or improper positioning. The hose should be inserted no more than 4–6 inches into the standpipe. If it's pushed in too far, it can create a siphoning effect that prevents proper draining.
Fix: Straighten any kinks, remove the hose and flush it with water to clear any blockage, then reattach it at the correct depth.
Step 2: Clean the Drain Pump Filter
Most front-load washers have an accessible pump filter, usually located behind a small panel at the front bottom of the machine. This filter traps lint, coins, and small items that can block the pump.
- Place towels and a shallow bucket beneath the access panel.
- Open the panel and slowly unscrew the filter cap — water will flow out.
- Remove any debris from the filter and the housing cavity.
- Rinse the filter under running water.
- Reinsert the filter and tighten the cap securely.
Step 3: Inspect the Lid Switch or Door Latch
Top-load washers rely on a lid switch to signal that it's safe to spin and drain. If this switch is faulty, the machine won't advance past the wash cycle. For front-loaders, a faulty door latch can trigger the same problem.
Fix: Listen for a clicking sound when you close the lid. If there's no click, the switch likely needs replacing. This is an inexpensive part available at most appliance parts stores.
Step 4: Test the Drain Pump
If the filter is clear and the hose is fine, the drain pump itself may have failed. Signs of a bad pump include a humming sound during the drain cycle with no water movement, or complete silence when the machine should be pumping.
To test the pump, you can access it by removing the back panel (top-loaders) or front panel (front-loaders). With a multimeter set to continuity mode, test the pump's terminals. No continuity confirms the pump is faulty and needs replacing.
Step 5: Check for Error Codes
Modern washing machines display error codes that can pinpoint the problem instantly. Common drain-related codes include:
| Brand | Error Code | Meaning |
|---|---|---|
| Samsung | 5E / SE | Drain error |
| LG | OE | Drain error |
| Whirlpool | F21 | Long drain fault |
| Bosch | E18 | Drain blocked |
When to Call a Professional
If you've worked through all of these steps and the machine still won't drain, the issue may involve the control board or wiring harness — repairs best left to a certified technician. Contact your manufacturer's service center or a local appliance repair professional for an assessment.