If the protector has failed (e.g., the bimetal disc is damaged from repeated high-current arcing), the entire unit must be replaced. Note that these are often specialized parts and may be difficult for individuals to purchase directly from the manufacturer. Technical Specifications Klixon® serie 3MP - GVZ Components
In 90% of the cases I saw (including mine), the issue was a corrupted temporary file that refuses to overwrite itself. 3mp31702 fix fixed
The 3MP31702 is typically located on a small PCB near the motor. If the protector has failed (e