Title: Do you want to ask "What is the reason why the electric snack cart can't move when it is moving, and the wheels can't turn when it is put into neutral, but it can turn when it is taken off neutral"? Motor Hall failure. If a Hall failure occurs in the motor, the instrument will display the power status, but the motor will not rotate when the handle is turned. Use a multimeter to measure the Hall signal line and if there is no change in voltage, it means that the Hall is damaged and a new Hall needs to be replaced. The electric snack cart is a kind of dining cart that has the characteristics of good mobility, no site constraints, and compact appearance.