Product Name: BLDC Controller Model NO.: 48V1000W Material: Alloy Steel Manufacturing Process: Casting Surface Treatment: Galvanized Certification: ISO 9001:2008 Trademark: OEM Transport Package: Carton Box Specification: 24mosfit Origin: China Product Description Controller common troubleshootingWhen electric cars don't go1. Check whether the output of the electric vehicle battery is normal. If the output is too low, it proves that the battery is dead or bad, and the battery needs to be replaced.2. Unplug the controller from power failure (brown: low brake power off, blue and white: high brake power off + 48V). If the car turns, it proves that the brake lever is broken or the controller is broken (use a multimeter to hit the beep) Gear test brake lever is the same or the low brake is connected to the bottom line, indicating that the brake lever and the controller are broken) The brake lever or the controller must be replaced.3. Check whether the voltage of the controller's electric door lock is normal (use a multimeter to the DC position, the electric door lock voltage is about 48V / 60V). If there is no voltage, the key circuit is defective.4. Check whether the controller 5V is normal, that is, about 5V of the Hall line, turn the red line to about 5V (use the multimeter to the DC position). If the voltage of the electric door lock is normal, the controller is broken.5. Check whether the signal voltage of the handle of the controller is normal. It means that the green and white wires of the handle are not pulled to 0.6V and the handle is pulled to 3.6V. If the signal voltage of the handle is incorrect, it indicates that there is a problem with the handle.6. Check if the controller MOS tube is damaged. Use a multimeter to switch to the resistance level. First place the red pen on the black line of the controller, place the black pen on the red line of the controller in turn, and place the red pen on the phase line of the controller. Yellow, blue, green, resistance is about 500 or the values are consistent. If one of the above 6 measurement methods is connected, the MOS tube of the controller is damaged and the controller needs to be replaced.