Several conditions of the controller easily damaged

1. Wrong connection of battery positive and negative poles

2. The phase wires touches the battery positive or negative poles

3. Wrong connection of the positive and negative poles of the Hall wire between controller and motor.

4. The controller enters water

5. The controller fall down from somewhere high  

6. Metal port of USB cable connect with high voltage.

7. The torque of electric drew driver less than 10N, otherwise, it will cause binding post, fall off or bolt broken in binding post.

8. The motor’s insulating layer of phase lines peels off due to aging, which causes the phase lines short circuit, then the controller will be burned directly.
9. The function wires connect wrong may caused the CPU and storage compents damaged.

So before using sabvoton controller, pls. checked well for the manuals and using guide.