Why is my washing machine full of water and stopped?

The drain stage failed: a clogged pump filter (front-loaders' famous coin trap), a sock in the pump or hose, a kinked drain hose, or a failed pump or lid switch. Drain manually via the filter's hose, then work the path.

Where is the washing machine filter?

On most front-loaders, behind a small access door at the bottom front: a twist-out coin trap that catches everything pockets ship. Cleaning it quarterly retires the most common no-drain call.

Why does my washer drain but not spin?

Spin has interlocks: a failed lid or door switch, an unbalanced load the machine refuses to fling, or a worn belt or clutch. Redistribute the load first; a machine that spins after rebalancing has diagnosed itself.

Why does water back up out of the standpipe when the washer drains?

The house's drain, not the washer: the standpipe or its branch is partially clogged and cannot swallow the pump's flow. That one is a plumbing snake's job, not an appliance part.

Washing Machine Won't Drain or Spin: Diagnosis

Page last reviewed: August 2026 · Reviewed by Harold R. Bennett, retired home inspector

A washer that stops full of water looks like a disaster and is usually a pocket’s fault: the drain path runs from tub to pump filter to hose to standpipe, and the filter, the coin trap most owners have never opened, catches the socks, coins, and hair ties that end most of these calls. Washing machine wont drain complaints split cleanly from won’t-spin ones, and both diagnose in order. This guide covers the drain path, the spin interlocks, and the plumbing impostor.

First: get the water out

A tub of water blocks every inspection, so drain manually first: front-loaders hide a small drain hose beside the pump filter behind the bottom-front access door (low, slow, towels and a baking pan, patience), and any machine drains by lowering the main drain hose into a bucket below tub level and letting gravity siphon. Power off at the plug before hands go anywhere, and bail the remainder. Now the path can testify dry.

The drain path, in order

One: the pump filter (coin trap). Front-loaders’ bottom-front twist-out trap is the single highest-yield stop in laundry diagnostics: coins, socks, underwire, hair ties, and lint felts mat it shut, and the machine protects its pump by refusing to drain. Twist out over a pan, clear, check the impeller visible behind it spins free, reseat firmly (a loose trap leaks). Top-loaders without an accessible trap concentrate the same debris at the pump inlet, one step deeper. Quarterly trap cleaning is the ownership habit this article exists to install.

Two: the hose. The corrugated drain hose kinks behind shoved-back machines and clogs at its ends and low bends; off at both ends over a bucket, sight through, snake or flush. The sock that escaped the trap lodges here or in the tub-to-pump bellows, the classic hidden passenger found by feel in the disconnected hose.

Three: the pump. A pump that hums with a clear trap and hose, runs silent when it should run, or grinds has finished its career: on most machines a modestly priced, screwdriver-accessible part, weighed against the repair-or-replace math only on elderly units.

Four: the house’s drain, the impostor. Water that leaves the machine and comes back up the standpipe, or floods the floor at the standpipe while the pump runs, is not the washer at all: the standpipe or its branch line cannot swallow the flow, a slow-drain diagnosis snaked from the standpipe, with the laundry’s lint being that line’s signature clog. The standpipe rules ride along: hose inserted loosely (an airtight fit siphons the tub as it fills), to proper height, with the loop secured.

Won’t spin: the interlock side

Spin failures have their own short list, worked after drain is proven. The lid or door switch: machines refuse to spin with an open or unlatched lid, and a failed switch reads as open forever, the click test (or its absence) at the latch being the screen, and the part being cheap. The unbalanced load: modern machines sensing an off-center wad (one soaked blanket being the archetype) will retry, thump, and finally surrender rather than fling it; redistribute and rerun before suspecting parts, and chronic imbalance on level floors suggests failing suspension. The drive: belts that squeal or smell, clutches and couplers that let the motor run while the basket sits, are the mechanical tier, model-specific and tutorial-rich. Suds lock, the oddity: excess or wrong (non-HE) detergent foams into a cushion the pump cannot move and sensors misread, curing with rinse cycles and measuring cups, and worth naming because it impersonates both drain and spin failures while costing nothing to fix.

The habits, and the water above

Trap quarterly, pockets always, HE detergent measured, loads balanced, and the machine left with room behind it so the hoses live unkinked. The annual pull-out pairs with the laundry’s two famous risks: the supply hoses’ burst inspection, braided lines and valves checked, and the dryer duct’s cleaning, one visit covering the room’s flood and fire files, with a leak detector on the laundry floor as the cheap sentinel between visits.

The bottom line

Drain fails at the trap, the hose, the pump, or the house’s own pipe, in that order and mostly at the first; spin fails at the switch, the load’s balance, or the belt. Open the coin trap before calling anyone, read standpipe backup as plumbing rather than appliance, and let the quarterly trap ritual and the pocket check retire the category’s most common call.