How Does a Dryer Door Work?

Door Function

• The schematics of the dryer door go well beyond the hinges that it rests on. The dryer door attaches to the dryer door frame and both must work together for the dryer to do its job. A door that does not line up perfectly with the dryer door frame can completely throw off the mechanics of the dryer itself. Though it may seem trivial, the ability of the dryer door to open and close freely is actually a safety feature set in place by the manufacturer. A dryer door that is obstructed or unable to line up flush with the door frame will be unable to trigger the door switch.

Door Switch

• Wiring that runs through the door frame connects to the dryer door switch. The dryer door switch rests in a recessed section of the frame. When the dryer door closes, it flips the door switch. This event triggers electrical activity, which in turn allows the dryer to operate when the start button on the machine is pressed. When the door is open, the door switch lever is depressed, cutting power and immediately halting the dryer’s operating cycle.

Interior Light

• When the dryer door opens and the door switch is depressed, it turns on the appliance’s interior light, if it has one. This light is often powered by a 40-watt bulb that may need replacing from time to time. When the dryer door closes and the door switch is pressed, the interior light shuts off. If your dryer has an interior light and you notice that it does not come on when the dryer door is in the open position, check your owner’s manual for instructions on how to test the dryer’s bulb. If the bulb is good, it may mean that the door switch is failing.

Caution

• If you notice that your dryer does not immediately cease to operate when you open the dryer door, stop using the dryer immediately. It is imperative that the dryer door works as intended. A dryer door that does not stop the dryer from spinning when opened or permit the spin to operate when closed is indicative of a faulty door switch. A door switch that is inoperable can cause serious injury. If the dryer continues to spin while the door is open, anyone reaching in can be burned or hurt by the spinning drum. If this is the case with your dryer, seek the advice of a trained appliance technician before sending your next load of wet laundry for a spin.