After using the electric bicycle controller for a long time, it is inevitable that there will be some problems. Many maintenance masters will encounter customers to check the "difficult and miscellaneous diseases" of the controller. Today, some common problems and solutions are listed to facilitate the maintenance masters to improve efficiency, and to quickly do some simple troubleshooting when there is a problem with the controller.

1. Sometimes the handlebar can turn, but sometimes the motor needs to be assisted to turn?

Check whether the lower phase wire is properly connected, if the problem cannot be solved, the controller is damaged and needs to be replaced.

2. What is the reason for the loud noise when starting?

There may be several reasons for this problem:

· The motor itself is noisy. Due to the design or overheating of the motor, it may cause loud noise when starting after a long period of use. Solution: replace the motor.

· The matching problem between the controller and the motor, the controller software processing is not perfect, and the compatibility is not strong. Solution: replace the Gaobiao controller.

· After the motor starts up to a certain speed, it will resonate with the electric bicycle. The solution: use other electric bicycles or controllers to make a special match for this type of vehicle (the effect may not be obvious).

3. Why does the brake not work when the transfer handlebar is not reset?

There are two common possibilities for this problem:

The brake lever is faulty. The brake lever does not give the controller a brake signal when braking. The reason for this phenomenon may be that the brake lever switch is not in good contact, or the circuit is disconnected. You can unplug the brake wire from the controller, and use the digital multimeter to measure whether the two brake wires are short-circuited while pinching the brake handle. If it is normal, it should be short-circuited, otherwise, the brake handle is damaged.

Solution: replace the brake lever or connect the disconnected line. If the brake lever is normal, then check whether the brake level is consistent with the controller. If the controller is a high-level brake, one of the brake lines should be connected to the positive pole of the power supply. If the controller is a low-level brake, then one of the brake lines The root should be connected to the negative pole of the power supply. The solution according to law: connect the brake line according to the correct requirements.

The brake input circuit inside the controller is broken. In this case, the brake signal cannot be transmitted to the controller, and the brake function cannot be generated. In this way, the controller continues to drive the motor forward when the handle is not reset, showing that the brake does not work. The phenomenon.

4. Is the electronic brake stronger and better?

No, the greater the force, the higher the reverse charging voltage, and the possibility of damage to the electric bicycle controller will increase.

5. Why can I hear the car buzzing every time I start it?

After the motor starts to a certain speed, it will resonate with the car as a whole. Different models have different noises, and it is not due to improper control of the motor.

Mingcheng Zhizao is a professional electric bicycle controller manufacturer based in China. We have been producing high-quality and reliable controllers for over 10 years. Our controllers are used in a wide range of electric bicycles, from low-power entry-level models to high-performance racing bikes.