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14、The tricycle is on fire (1) Causes: ① Catching fire when charging, ② Catching fire when riding. (2) Troubleshooting: ① If heating and ignition are not caused by debris and flammable materials placed on the tricycle when charging, check whether the ignition is caused by short circuit due to looseness in the charging position.  ② Catching fire when riding: it…

13、The fuse is burn out continuously (1) Causes: ① Controller damaged, ② Short circuit of the meter, ③ Short circuit of the lamp holder, ④ Short circuit after cable damage, ⑤ Reverse connection of battery (after replacing the battery or using a battery holder of other brands) (2) Troubleshooting: Unplug the battery, turn on the ignition lock, and turn…

12. The turn signal fails to light up (1) Causes: ① Flasher damaged, ② Turn signal switch damaged, ③ Short circuit of wires or connectors. (2) Troubleshooting: If the left and right turn signals are not on at the same time, the flasher is likely to be damaged.. If only one turn signal is on, it indicates that the flasher…

11、The headlight fails to light up (1) Causes: ① Bulb damaged, ② Headlight switch damaged, ③ Short circuit of wires or connectors. (2) Troubleshooting:  ① Use a multimeter to test the voltage at both ends of the headlight wire after pressing the headlight switch. If the voltage is normal, the headlight is damaged. If no voltage, the headlight switch is damaged…

10. The horn is out of control. (1) Causes: ① Horn damaged, ② Horn switch damaged, ③ Short circuit of connection wire or connectors. (2) Troubleshooting: ① Use a multimeter to test the voltage at both ends of the horn wire after pressing the horn switch. If the voltage is normal, the horn is damaged. If no voltage, the horn…

9、The meter shows normal voltage, the speedometer has abnormal display, and the motor runs normally. (1) Causes: ① Meter damaged, ② Short circuit of speed signal wire, ③ No speed display of controller (2) Troubleshooting: Check whether there any voltage change between the signal wire and the negative terminal. Normally the signal voltage will rise as the…

8、 No power is displayed on the meter, while the motor runs normally. (1) Causes: ① No voltage between the positive and negative leads of the meter, and a short circuit in the wires or connectors, ② Meter damaged. (2) Troubleshooting: Set the multimeter to the corresponding gear and use it to test the positive and negative voltage of the meter. If the…

7、 The tricycle runs once powered on, with fast acceleration (known as “sharp speeding”). (1) Causes: ① Throttle damaged or cathode wire (black) open circuit or poor connectors, ② Controller  malfunctioning (2) Troubleshooting: ① Disconnect the throttle. If it is normal, the controller is normal, and the throttle and cathode wire should be checked. If the tricycle does not…

6、There is abnormal motor sound (1) Causes: ① Large bearing clearance inside the motor, ② Motor and rotor friction, ③ Magnetic steel loosening and falling off, ④ Axial endplay inside the motor, ⑤ Brush motor commutator oxidized, burned, oily, uneven on the surface, and loose commutator segment, ⑥ Loose and misaligned brush holder (2) Troubleshooting: ① Replace the bearing. ② Repair the stator and rotor again. ③ Re-bond the magnetic…

5、 The motor jitters during operation Brushless motor: (1) Causes: ① Poor motor Hall connectors, ② Poor throttle contact, ③ Interference in the speed signal wire (2) Troubleshooting: ① Re-connect the motor Hall connectors. ② Re-connect the throttle connector. ③ Replace the controller and the meter to eliminate the interference. Tips: Generally electric tricycle jitter during use is caused by the poor contact of motor Hall…