WM3670HVA Won't Drain – How to Diagnose and What Part Fixes It
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Understanding the Problem
If your Whirlpool/Maytag WM3670HVA washer leaves water in the drum or takes forever to pump out, the issue is almost always in the drain path or the electronics that control it. Common failures include a clogged drain hose or filter, a failed drain pump (won't spin or just hums), an obstructed tub-to-pump hose, or a faulty water level/pressure sensor that prevents the washer from starting the drain cycle. Diagnosing a drain problem typically starts with simple, safe checks: inspect and clear the drain filter/trap if present, make sure the drain hose is not kinked or blocked, and listen during the drain cycle for the pump motor (running or humming). If basic cleaning doesn't help, test the drain pump electrically or swap with a known-good part. In some cases the control board or pressure switch can falsely report conditions that stop draining, so those are the next places to test if the pump and hoses are good.
Common Symptoms
Washer stops with water in the drum, long drain cycles, error codes related to draining, loud humming from the base, or no noise at all during the drain step.
Common Causes
- Clogged drain filter, coin trap or tub-to-pump hose (debris, lint, coins, small clothing items)
- Failed drain pump motor (electrical fault or seized impeller)
- Blocked or kinked external drain hose or improper drain height/installation
Popular Parts That Fix This Problem
These are the most common replacement parts that fix this problem. When you're ready to order, click below to find the right part at PartsDiscount.com — just search by your appliance model number for a guaranteed fit.
Helpful Repair Tip
Start by running a drain/spin or drain-only cycle while listening at the front base of the washer. If you hear a humming pump that doesn't move water, the pump motor is usually bad. If the pump is silent, check for kinks/clogs in the drain hose and the pump inlet (remove visible debris).
Frequently Asked Questions
How do I know if the drain pump needs replacing or just cleaning?
First remove visible debris from the pump inlet, trap (if present), and hoses. Run a drain-only cycle and listen: if the pump hums but no water moves, the impeller or bearings are likely seized and the pump usually needs replacement. If the pump makes no noise and has continuity on a multimeter, check for voltage at the pump during a drain cycle — no voltage points to a control or wiring issue. If the pump is dead (no continuity), replace it.
Can I run the washer with water still in the drum?
You should avoid repeatedly using the washer with standing water in the drum. Trapped water can damage clothing, cause odors and mildew, and may overload components if cycles are forced. If a single load is stuck, manually drain the tub (use a bucket or lower the drain hose) and fix the underlying issue before further use.
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