3387134 High limit thermostat when the cycle thermostat temperature failure,the temperature can not be adjusted, when the temperature reaches 155 degrees Celsius, the high limit thermostat cut off the current. you solve the high temperature risk, please replace it in time. 3392519 The dryer thermal fuse USES the dryer as a safety mechanism that prevents current from flowing to the motor circuit when the dryer overheats.The hot fuse is disposable and cannot be reused. When your dry thermal fuse helps We recommend that you check the vent before replacing it.