The High Limit Thermal Fuse is an OEM replacement part for Whirlpool dryers that prevents overheating. It is a one-time use use part that must be replaced if it is tripped. Its designed to respond to excessively high temperatures, safeguarding both the appliance and the home. Causes of a bad High Limit Thermal Fuse can include blocked ventilation in the dryer or exhaust vent, overloading the dryer, or component failure within the heating system leading to overheating.   Symptoms of a bad High Limit Thermal Fuse include: The dryer not starting or abruptly stopping during a cycle. No heat being produced during cycles, leading to damp clothes. A blown thermal fuse detected during a continuity test. This OEM Whirlpool part can also be used on Maytag, KitchenAid, Jenn-Air, Amana, Magic Chef, Admiral, Norge, Roper, and Kenmore/Sears brand appliances.  This part fixes the following symptomsToo hotNo heat or not enough heatPart Number WP40113801 (AP6009129) replaces 40113801, 14218937, 62600, 915698, PS11742274, WP40113801VP.