Dryer: Won't turn off

The load is dry, yet the dryer keeps running and running. Before that unnecessary heat damages your clothing and drives up your utility bill, you may need to replace the timer or the electronic control board that isn’t ending the cycle. If your dryer uses a mechanical timer and doesn’t stop when the dial reaches the off position, then a failed contact in the timer is likely causing the dryer to continue running and you’ll need to replace the timer. If your dryer uses an electronic control, a stuck motor relay on the electronic control board can cause the dryer to run constantly with the dryer door closed. If the dryer stops only when you open the door, you’ll likely need to replace the electronic control board.

If the dryer won’t turn off when you open the dryer door, the dryer door switch likely failed. Replace the door switch if it doesn’t accurately detect the door being open or closed.

These repairs may help solve your Dryer problem:

Replace the dryer timer

Timer

The timer on the control panel lets you set the drying time by turning the timer's control knob. A small motor on the back of the timer advances the timer during the cycle. The timer's internal cams open and close switches or contacts to operate the various electro-mechanical components in the dryer (mainly the drive motor and the heating element). Replace the timer if the contacts aren't working, the dryer won't start, heat, continue running or the timer won't advance.

For manuals, repair guides, and specific part recommendations, enter your model number.

Repair or replace the dryer electronic control board

Electronic control board

The electronic control board governs the timing and execution of dryer functions. The wiring connections on the control board can be repaired, but the control board itself cannot. Replace the electronic control board if it's receiving voltage but isn't transmitting it to the dryer components, causing the dryer to not work. The dryer may start but then stop in the middle of the cycle if internal control board components don’t detect sensor signals accurately. It can be difficult to determine if the electronic control board is the problem (unless you see burn marks on it) and it's an expensive part that can't be returned once installed; for that reason, have a trained service technician perform advanced diagnostics on control board before you replace it.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the dryer door switch

Door switch

The dryer door switch detects whether the dryer door is open or closed. The dryer won't start if the door switch senses that the door is open. Or, the dryer might start then stop if the door switch fails during the cycle. If the switch reads the door as being open when it's shut, or if it allows the dryer to keep running when the door is open, replace it.

For manuals, repair guides, and specific part recommendations, enter your model number.