A dryer thermal fuse is a safety device designed to protect the dryer from overheating. It is a small, heat-sensitive component that is typically located in the dryer's heating system or airflow path. The primary function of the thermal fuse is to open the electrical circuit and shut off power to the dryer if it detects excessively high temperatures. The thermal fuse is designed to open the circuit and cut off power to the dryer when it reaches a specific temperature threshold. This threshold is typically lower than the normal operating temperature of the dryer, ensuring that it only activates in the case of overheating. Unlike some other safety devices, such as thermostats, thermal fuses are generally not resettable. Once they trip and open the circuit, they must be replaced. Attempting to bypass or reset a tripped thermal fuse is not safe and can pose a fire risk. Steps to replace a dryer thermal fuse: Unthread the screws and remove the back panel Disconnect the wiring Remove the old thermal fuse Install the new thermal fuse Place back the back panel Follow these steps to replace your dryer thermal fuse.