A washer that finishes a cycle with a drum full of water has stopped somewhere in the drain and spin sequence. On a top-loader and a front-loader the parts differ, but the order of checks is the same. Here is what to look at, and what to leave to a technician.
Unplug the washer or turn off its breaker before you open any panel, and close both the hot and the cold supply valves at the wall. A washer holds water in the drum and in the pump housing, so expect a spill when you open a filter or pull a hose. Keep towels and a shallow pan on hand, and never reach inside the cabinet while the machine is still plugged in.
The filter, the drain hose, and the lid or the door are within reach for most homeowners. Replacing a drain pump, a door lock assembly, or a control board is not. Those jobs involve line voltage, connectors, and water seals that have to seat correctly, or you trade a drain problem for a leak that reaches the floor. A technician also has the model's wiring information, which is what turns guessing into a diagnosis.
The drain pump pulls water from the drum and pushes it up through the drain hose. On a front-loader it sits at the bottom of the cabinet behind the lower access panel or the toe kick. On a top-loader it often mounts near the base of the tub. When the pump motor fails, the drum stays full at the end of the cycle and the machine may not reach the spin.
Listen as the cycle reaches the drain step. A steady hum with no water movement usually means the impeller is jammed or the pump is worn. Silence can mean a dead motor, a blown fuse on the board, or a control that is not sending voltage to the pump at all. The difference matters, because each one leads to a different repair. Do not keep restarting the cycle hoping the water will clear, since a pump working against a blockage can overheat.
On belt-driven top-loaders, a worn or stretched pump belt lets the motor spin while the pump does not turn. It is a separate part and an easy one to overlook when everything about the symptom points at the pump housing itself. If the pump turns freely by hand and the belt is slack, the belt is the fault rather than the pump.
Front-loaders have a filter, or coin trap, behind the lower access panel. It collects lint, coins, hairpins, and small garments. Once the screen is packed, water drains slowly or not at all, and the machine may stop mid-cycle with water still in the drum. Many washers have a small drain hose next to the filter so you can empty the housing before you unscrew the cap.
Open the filter only after the machine is unplugged. Pull the debris out, rinse the filter, and check the pump impeller behind it for a wrapped sock or a hair tie, which will stop the pump just as surely as a dead motor. Some top-loaders use a lint filter in the pump housing or at the drain hose connection; check that as well.
The drain hose leaves the pump, rises to a standpipe or a laundry sink, and has to stay clear along its whole run. A hose pinched behind the machine, kinked where it bends out of the cabinet, or crushed by the dryer will not pass water. Pull the washer out and follow the hose by hand from the pump to the standpipe.
Check the inside of the hose for a blockage as well. Lint and soap residue build into a plug over time, more often on machines that drain into a utility sink. With the power off and the supply valves closed, disconnect the hose and flush it into a bucket. A hose with a sag that holds water should be rerouted or replaced.
A top-loader will not drain or spin when it thinks the lid is open. The lid switch sits under the top panel near the hinge, and a broken actuator, a worn switch, or a misaligned strike leaves the machine stuck at the drain step. The washer fills and agitates, then stops with a drum full of water and no spin.
Front-loaders use an electronic door lock instead. The lock holds the door closed through the wash and releases once the drum stops. If the lock fails to engage, or fails to report that it engaged, the control stops the cycle before draining, and the door may stay locked with water inside. Neither part is a homeowner repair; both are tied into the machine's safety interlock wiring.
The control board decides when to drain by reading a water-level pressure switch or sensor. On some top-loaders, a pressure switch that reads the drum as empty tells the board there is nothing to drain, so the drain step never runs and the cycle stalls with water still sitting in the drum. On a front-loader, a sensor that misreads the level can hold the cycle in a wait state until the machine times out.
A failing board shows up as no response to any button, erratic cycles, or repeated error codes. Replacing one means matching the exact model's part number, moving every connector over in the right order, and, on some models, programming the new board afterward. That is diagnostic work, and it needs the model's service information rather than a parts catalog guess.
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