A: The cause of the malfunction:
1. Thermal relay overload
2. Loose power cord or parts
3. The motor is broken
Handling method:
1. Check if overloading is caused by long-term action. If so, readjust the current setting value of the thermal protection relay. After troubleshooting for 2 minutes, press the reset button
2. Tighten the wiring
3. Repair or replace the motor
