How To Fix A Dryer That Shuts Off Too Soon

Newer models of dryers may use a moisture sensor to control the timer from advancing when the automatic drying cycle is selected. The sensor circuit consists of an electronic control in the console and sensors that are typically located on the front bulkhead of the dryer. When sensor dry is selected the wet clothes in the dryer come in direct contact with the sensors and complete an electrical circuit. This circuit causes the control board’s capacitor to discharge and that prevents the timer motor from advancing. When clothes are nearly dry, they fail to complete this circuit and the timer begins to run until the end of the cycle. If these sensors are defective or become coated with fabric softener, then the dryer will shut off before the clothes can dry.

How to clean and test a dryer’s moisture sensor:

1. Open your dryer door and locate your moisture sensor. On newer models, it is usually mounted to the lint filter housing.
2. To clean, lightly rub it with very fine sandpaper to remove any debris or built up additives (e.g. fabric softener).
3. Wipe the sensor with a damp cloth and place a load of clothes in the dryer and periodically check your clothes to see if they are still damp.
4. If your dryer still shuts off too soon or continues to run after your clothes are dry, you need a replacement moisture sensor.