Kenmore Dryer Won't Stop Running: Causes & Fixes

Most Likely Cause#

A Kenmore dryer that keeps running past the end of its cycle — refusing to shut off unless you open the door or unplug it — has a failed timer, control board, or cycling component keeping the motor powered, and which one depends on the platform. On mechanical-timer models the leading cause is welded timer contacts; on electronic models it is a stuck control-board relay; on auto-dry cycles a stuck moisture sensor can hold the cycle open.

The dividing line is how your dryer is controlled. Most 110-series units use a mechanical timer, while newer 110-series, all 796-series LG, and all 417-series Electrolux models use electronic control boards. Identifying yours points straight to the likely part.

Why a Kenmore Dryer Won't Shut Off#

How a Kenmore Dryer Ends Its Cycle#

A dryer stops when the control cuts power to the motor circuit, and that happens differently by platform. A mechanical timer uses cam-driven contacts to sequence the cycle; when the contacts controlling the motor weld together from years of arcing, the motor circuit stays live no matter where the timer sits, so the drum keeps turning even as the timer advances. On electronic models the board uses relays to switch the motor and heater, and a welded motor relay runs the motor regardless of what the control logic says — the display may even read "complete." On auto-dry, the dryer runs until the moisture sensor bars report dry; a shorted or dirty sensor that always reads "wet" never lets it end. Each cause keeps the motor energized in its own way.

Check It Yourself First#

Unplug the dryer before accessing the timer or control board.

1. Identify the control type. A knob-style mechanical timer versus a push-button electronic panel decides where to look — timer contacts on one, board relay on the other.
2. Test the moisture sensor. On auto-dry models, clean the two metal sensor bars inside the drum with rubbing alcohol. A film or short there makes the dryer read "wet" forever and never stop.
3. Watch the timer. On mechanical models, if the timer knob advances but the dryer never stops, the motor contacts are welded; if the knob does not move at all, the timer motor has died mid-cycle.
4. Check the board relay. On electronic models, a display that shows the cycle as complete while the drum keeps turning points to a welded motor relay on the control board.
5. Use the door as a stopgap. Until it is fixed, opening the door stops the drum — but do not leave a dryer that will not shut off running unattended.

Repair or Replace?#

A moisture sensor cleaning is free; a timer or a control board is a moderate part. On a Kenmore dryer under about a decade old, replacing a welded timer or a stuck-relay board is well worth it against a new dryer — get a firm quote before a board, since it is the costliest option.

When to Call a Pro#

Call for service if the timer contacts or a board relay are welded, or if the moisture sensor tests clean and the dryer still will not stop. A component keeping the motor energized is not something to leave running.

Kenmore dryer that won't shut off? Book an EasyBear technician — we service mechanical-timer and electronic 110, 796, and 417 series dryers.