Washer Won't Drain? Here's What's Actually Wrong

If your washer finishes a cycle with water still sitting in the drum, the machine either cannot push the water out or never got the signal to try. By a wide margin the two most common causes are a clogged drain pump filter and a failed drain pump. Hoses, lid switches and control boards are worth checking but come up far less often.

Get the water out first

Unplug the washer. You are about to open a panel on a machine holding several gallons of water, and a live control board does not belong near that.

On a front-loader, look for a small access panel at the lower front corner. Behind it are the drain pump filter and a short capped drain hose. Put a shallow baking pan and towels on the floor, loosen the cap, let a quart run out, cap it again, and repeat. A full tub holds three to five gallons.

Top-loaders usually have no access door. Bail with a pitcher until the water is below the drain hose at the back, then pull that hose off the standpipe and lower the end into a bucket. Gravity does the rest as long as the hose end stays below the water line in the tub.

Never tip the machine to dump it. That bends suspension parts, and water in the motor or control board turns a pump job into a much bigger one.

The drain pump filter is where the sock went

The filter, sometimes called the coin trap, sits just ahead of the pump impeller. What comes out of them is always the same list: quarters, bobby pins, bra underwires, drywall screws, guitar picks, and a child's sock nobody went looking for.

Under the hardware there is usually gray felt made of lint and undissolved detergent. Water is hard across this whole metro, and hard water plus too much detergent dries into something closer to caulk than lint. That paste is the real blockage most of the time.

Turn the filter counterclockwise, pull it, clear it, then reach in and spin the impeller. It should turn freely. Clean the gasket and its seat before you thread it back in, because one lint fiber there will leak on your floor every wash. Pull that filter every three months.

Top-loaders generally give you no filter. The same debris lands in the pump housing, and reaching it means pulling the pump.

When the pump itself has failed

Listen during the drain portion of the cycle. The sound tells you most of it.

• A steady hum with no water moving means a jammed impeller or a seized pump.
• Silence means no power to the pump or an open winding.
• Grinding means a broken impeller vane.
• A rattle like a bolt in a can is usually a coin loose in the pump housing.

Most machines also throw a code. LG shows OE. Samsung shows 5E, and its top-loaders often display nd for no drain. Whirlpool and Maytag front-loaders show F9 E1, meaning the pump ran the full allowed time and the water level never dropped. Bosch shows E18. A drain code proves the water did not leave, not that the pump is bad.

Drain pumps last seven to ten years. Replacing one is routine and sits inside our usual $150 to $400 range for parts and labor.

One local wrinkle: plenty of basement laundry rooms in Brookside, Waldo and Hyde Park drain into an old standpipe or a laundry tub. A slow house drain backs water up and looks exactly like a failing pump. That one is a plumber's call.

Kinked hoses and the wrong standpipe height

Pull the machine out and follow the hose by hand.

• Kinks happen nearly every time a machine gets pushed back to the wall.
• The corrugated section collects sludge and slowly narrows.
• The standpipe should generally be 30 to 34 inches tall. Too low and the machine siphons water out mid-wash. Too deep and the hose seals against the pipe and cannot vent.
• Water coming up out of the standpipe onto the floor means the house drain is blocked, not the washer.

There is a clean test. Unhook the hose, put the end in a five gallon bucket, and run a drain and spin. If the machine empties into the bucket normally, the washer is fine and the problem is downstream.

Lid switches, door locks, and the board

A washer will not drain or spin unless it knows the lid or door is latched. On a top-loader, a worn strike or failed lid switch stops the cycle before drain and the tub sits full. Whirlpool usually flags it as F5 E2, and you will hear the lock click and release without catching. On a front-loader, a failing door lock assembly does the same thing but reports a door error instead of a drain error.

Control boards belong at the end of this list. A board should only be replaced after a technician confirms the pump has power at its connector and still will not run. Boards are the most expensive part in the machine and get swapped unnecessarily more than anything else in washer repair.

"Won't drain" and "won't spin" look identical

Every washer refuses to spin a full tub by design, so a drain failure always shows up as a spin complaint. Sort it this way.

Water still in the tub is a drain problem. Work the list above.

Tub empty but clothes soaking wet is a real spin problem, and a completely different set of parts: a worn drive belt, a chewed motor coupler on direct-drive Whirlpool top-loaders, a loose rotor bolt or failed hall sensor on LG and Samsung direct-drive machines, or worn suspension rods letting the tub bang hard enough to trip the out-of-balance sensor.

Drains fine but only spins slowly is usually that out-of-balance sensor doing its job. One heavy bath mat or a balled-up comforter does it every time.

If the water is out and you are still stuck, call (816) 555-0123. The $109 diagnostic fee is credited to the repair when you approve the written quote, every repair carries a one year warranty on parts and labor, and calls before noon usually get same-day service with a two-hour window anywhere in our service area.