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    Display faults

    5.1 Symptom: Display flickers or garbled.

    Solution: Replace the display.


    5.2 Symptoms: The display cannot be switch on and showing nothing.

    Solution: Please contact the manufacturer, who will provide troubleshooting video.


    5.3 Symptom: The power showing on the display is unreasonable.

    Solution:

    (1) Reset the display to the default setting and ensure that the voltage level is setting correctly.

    (2) Update the display program code.


    5.4 Symptom: The display button cannot set parameters.

    Solution: Replace the button or replace the button and display at the same time.


    5.5 Symptoms: The display turned off immediately after it is turned on.

    Solution: Please contact the manufacturer, who will provide troubleshooting video.


    5.6 Symptom: When the ebike's riding speed reaches a certain value, the display turned off automatically. Take out and reinstall the battery and then the display can be turned on again.

    Solution: If the battery is faulty, repair or replace it with a new one.


    5.7 Symptoms: The display suddenly turned off while riding, and the battery makes a slight noise, like the fuse is burnt. After that, the display can no longer be turned on.

    Solution: Send the battery back to the manufacturer to replace the fuse or replace it with a new battery.


    5.8 Symptom: The display does not show the speed value or the speed value is changing rapidly.

    Solution:

    (1) Carefully check and ensure that the cable between the motor and the controller is connected firm and correct.

    (2) Reset the display to the default setting, then ride and check whether the display shows the speed value normally.

    (3) If the speed value on the display is normal, the fault is solved.

    (4) If the display cannot shows the speed value, replace the controller.

    (5) If the replacement of the controller still does not solve the problem, replace the motor.


    5.9 Symptom: Some of the data values shows on the display is abnormal.

    Solution: "Reset the display to default settings".


    5.10 Symptoms: The battery is full, but the display shows low power.

    Solution:

    (1) If the customer has not replaced the display ever, the display can be reset to the default setting.

    (2) If the display shows abnormal data after replacing the display, it indicates that the display voltage level setting is not accurate and the voltage value needs to be set again.
    The suspension faults

    4.1 Symptom: The suspension is too soft or too hard.

    Solution: Adjust the suspension knob to make its elasticity meet the customer's requirements.

    4.2 Symptom: The suspension is damaged.

    Solution: Repair or replace the suspension.

    4.3 Symptom: The shock absorber leaks oil in hot weather.

    Solution: It is normal for lubricating oil to flow out due to high temperature.
    Controller faults

    4.1 Symptoms: Robin, Sam, Eddy and Commuter display showing error code 31.

    Solution:

    (1) Carefully check and ensure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (2) Switch off the display and then restart the display again, and check whether error code 31 disappears.

    (3) If error code 31 still exists, it indicates the MOSFET device is faulty and should replace the controller.


    4.2 Symptoms: The motor cannot be driven by throttle, pedal assistance function and push assistance function.

    Solution:

    (1) Check whether the display shows error codes. If an error code appears on the display, find out the cause of the fault according to the code definition.

    (2) Check carefully and make sure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (3) Switch off the display and then restart the display again, and then test the throttle function, pedal assistance and push assistance functions respectively.

    (4) If the throttle, pedal assistance and push assistance functions are still unable to drive the motor, it indicates that the motor or controller is faulty.


    4.3 Symptoms: Robin, Sam, Eddy and Commuter display showing error code 30.

    Solution: Please contact the manufacturer, who will provide troubleshooting video.
    The fender fault

    3.1 Symptom: The fender is skewed.

    Solution: Reinstall the fender for correction.
    Motor faults

    3.1 Symptom: Motor does not rotate.

    Solution:

    (1) Check whether the display shows error codes. If the display shows an error code, find out the cause of the   fault according to the error code definition.

    (2) Check carefully and make sure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (3) Test the throttle function, pedal assistance function and push assistance function respectively.

    1. If the throttle does not work, but the pedal assistance function and push assistance function work normally, it indicates that the throttle handle may be faulty.

    2. If the pedal assistance function does not work, but the throttle function and push assistance function work normally, it indicates that the pedal assistance sensor may be faulty.

    3. If the push assistance function does not work, but the pedal assistance function and the throttle function work, it indicates that the display button may be faulty.

    4. If the throttle function, pedal assistance function and push assistance function do not work, it indicates that the motor or controller may be faulty.


    3.2 Symptoms: Robin, Sam, Eddy and Commuter display shows error code 24.

    Solution:

    (1) Carefully check and ensure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (2) Switch off the display and then restart the display again. If code 24 still exists, replace the motor.

    (3) After replacing the motor, if code 24 still exists, replace the controller.


    3.3 Symptoms: Robin, Sam, Eddy and Commuter display showing error code 23.

    Solution:

    (1) Carefully check and ensure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (2) Switch off the display and then restart the display again. If code 23 still exists, replace the motor.

    (3) After replacing the motor, if code 23 still exists, replace the controller.


    3.4 Symptom: Motor makes abnormal noise.

    Solution:

    (1) Carefully check and ensure that the connecting cable between the motor and the controller is firmly and correctly connected.

    (2) Switch off the display and then restart the display again, twist the throttle to start the motor and check whether the abnormal noise disappears.

    (3) If the abnormal noise still exists, take a video to record the abnormal noise of motor and the display showing with a mobile phone and then send it to the manufacturer. The after-sales personnel will find out the cause of the fault and offer a solution.


    3.5 Symptom: The motor cable is damaged, which causes the motor unable to running.        

    Solution: Replace the motor (including motor cable).
    Power assist function abnormal

    Symptom: Ebike pedal assistance function does not work.

    Solution:

    (1) Check whether the display shows error codes. If an error code appears, find out the cause of the fault according to the code definition.

    (2) Check carefully and make sure that the cable between the motor and the controller is firmly and correctly connected.

    (3) Test the throttle function, pedal assistance function and push assistance function respectively.

    1. If the pedal assistance function does not work, but the throttle and push assistance function still work, it indicates that the pedal assistance sensor may be faulty.

    2. If the throttle,pedal assistance function and pushl assistance function do not work, it indicates that the motor or controller may be faulty.

    (4) You can contact the manufacturer who will provide troubleshooting video.
    Front fork faults

    2.1 Symptom: The front fork is broken.

    Solution: Replace the front fork with a new one.

    2.2 Symptom: The front fork is deformed.

    Solution: Replace the front fork with a new one or correct the deformed front fork.

    2.3 Symptom: The front fork rubber sleeve is cracked.

    Solution: It does not affect the use. If it needs to be replaced, replace the entire front fork.
    Charger faults

    2.1  Symptom: The charger cannot charge the battery, and the led indicator remains green.

    Cause 1: The charger is not fully inserted into the battery charging port, and the contact is poor.

    Solution 1: Ensure that the output of the charger is firmly connected to the charging port of the battery.

    Cause 2: Charger cables fault like cable broken.

    Solution 2: Replace the charger.

    Please contact the manufacturer who will provide the troubleshooting video.

                                                                   

    2.2 Symptom: The led indicator of the charger can not light on.

    Cause 1: The charger is faulty.

    Solution 1: Replace the charger.

    Cause 2: The AC plug of the charger is not fully connected to the socket.

    Solution 2: Check and ensure that the AC plug of the charger is connected to the socket.

    You can contact the manufacturer who will provide troubleshooting video.


    2.3 Symptom:  The charger led indicator flashes and makes abnormal noise when charging the battery.

    Solution:  Replace the charger.


    2.4 Symptoms: When the charger is charging (the led indicator is red), unplug the charging plug, and then plug it back in. The red indicator turns to green.

    Solution: This phenomenon may occur when the battery is about to be fully charged and this is quite normal. 

    During the charging process, please wait patiently until the led indicator of the charger turns green, and then disconnect the charging cable.


    2.5 Symptoms: The charger shell overheated when charging a battery.

    Solution: It is normal for the shell of the charger to overheat when charging. To avoid overheating of the charger shell, ensure that the charger is placed in a cool, dry and ventilated place when charging.


    2.6 Symptom: The charger explodes and smokes.

    Solution: Immediately disconnect the charger from the socket, and then disconnect the charger from the battery.
    The battery loses power quickly

    Symptoms: The battery loses power faster than before when riding.

    Troubleshooting: Please ride the ebike with the following way and check whether the result is improved.

    (1) Use the battery properly,do not make the battery over-discharged or overcharged.

    (2) Make sure that the battery works in the proper temperature environment.

    (3) Make sure that the air pressure inside the tire is sufficient.

    (4) Try to avoid bad riding habits such as rapid acceleration and braking.

    (5) Ensure that the ebike load is reasonable.

    (6) Ensure that the riding section is ideal and there are few steep mountain roads.
    Battery faults

    1.0 Battery Overview

    1.0.1 External environment for battery use.

    (1) Please store the battery in a dry and cool place.

    (2) The charge temperature of conventional lithium battery is generally from 0 ℃ to 40 ℃.

    (3) The discharge temperature of conventional lithium battery is generally from - 20 ℃ to 60 ℃, and it is recommended to work from 0 to 40 ℃.

    1.0.2 Long time storage criteria for battery

    The lithium battery should be charged with 80% of its full power when it is not used for a long time, and stored in a dry and cool place. The battery should be charged for every 3 months to avoid the low power storage.

    1.0.3 Methods to prolong battery service life

    1.Do not overcharge the battery.

    2. Do not overdischarge the battery.

    3. Charge and discharge in a suitable temperature environment.

    1.0.4 Private battery maintenance or modification

    It is recommended to send the battery to a professional organization for maintenance. It is not recommended to modify the battery.


    1.1 Symptom: The battery cannot be charged.

    Cause 1: The fuse is burnt and result in the fail to charge.

    Solution 1: Replace the fuse or replace the battery.

    Cause 2: The BMS protection board inside the battery is faulty and result in the fail to charge.

    Solution 2: Repair or replace the BMS protection board or replace the battery with a new one.

    You can contact the manufacturer who will provide troubleshooting videos and problem solutions.


    1.2 Symptom: The battery cannot supply the power.

    Cause 1: The battery has been used for a long time, and its performance has failed, resulting in fail to discharge.

    Solution 1: Replace the battery with a new one.

    Cause 2: The battery has running out of power.

    Solution 2: Charge the battery.

    Cause 3: The battery button has not closed, resulting in no power supply.

    Solution 3: Press the battery power button to make it available.

    Cause 4: The battery lock is not set to the proper position, resulting in no power out (Sam model).

    Solution 4: Set the battery lock to the proper position (Sam model).

    Cause 5: The fuse at the battery discharge port is burnt or the BMS protection board is faulty, resulting in fail to discharge.

    Solution 5: Send the battery back to the manufacturer for repair or replacement.

    You can contact the manufacturer who will provide troubleshooting videos and problem solutions.


    1.3 Symptom: The battery power LED indicator can not light up.

    Cause analysis:

    (1) The power of the battery has been running out, and the power LED indicator can not light up.

    (2) The power LED indicator module is faulty and does not light up.

    (3) The battery BMS board is faulty or the fuse is faulty and the power LED indicator can not light up.

    Solution: Fully charge the battery and then measure the voltage of the battery with a multimeter. If the voltage is 0V, send the battery back to the manufacturer for repair or replacement; If the voltage is normal, the manufacturer shall provide the customer with LED indicator module for the replacement.                  


    1.4 Symptom: Battery USB does not work.

    Solution: Fully charge the battery, and then measure the voltage of the battery with a multimeter. If the voltage is 0V, send the battery back to the manufacturer for repair or replacement; If the voltage is normal, the manufacturer shall provide the customer with the USB module for replacement.


    1.5 Symptoms: The battery is fully charged, the ebike cannot ride for a long distance, and the mileage becomes shorter.

    Problem analysis:

    (1) The riding conditions are not ideal or the riding mode is unreasonable.

    (2) The battery performance is abnormal.

    Troubleshooting:

    (1) Use the charger to fully charge the battery (the red indicator of the charger turns to green). Then measure the battery voltage. the normal value is about 54.6V (42V).

    (2) Record the TRIP value on the display before riding, set the pedal assistance level to the 3, and then start riding until the battery power is exhausted. After riding, check the mileage value on the display and calculate the riding distance. Then remove the battery and measure the voltage value of the battery discharge port. The normal value is about 42V (30V).

    Precautions: During the riding process, it is necessary to ensure that the riding conditions are under ideal conditions.

    1. The temperature of the riding environment should not be too low, otherwise the riding distance will be affected. The suitable temperature is about 30 degrees.

    2. The road condition is ideal, the ground is flat and hard, and there is no steep slope.

    3. The tire pressure is sufficient.

    4. During the riding process, there is no frequent braking and quick start.

    (3) If the measurement result is abnormal, send the battery back to the manufacturer for repair or replacement.


    1.6 Symptom: the battery operating temperature is too high.

    Solution: Long-time and high-power riding in high temperature will leads to high temperature on the battery shell. Therefore, in order to avoid the high working temperature of the battery, you should try to avoid riding for a long time in high temperature weather.


    1.7 Symptom: The battery is on fire and smokes.

    Solution: Replace the battery with a new one.


    1.8  Symptom: The battery discharge port is damaged.

    Cause 1: The discharge port is damaged due to short circuit or battery failt.

    Solution 1: Check whether the external circuit has short circuit fault; Repair or replace the battery port.

    Cause 2: While installing the battery, it is out of alignment and squeezed by external force, resulting in mechanical deformation and damage of the discharge port.

    Solution 2: Repair or replace the battery discharge port. In addition, when installing the battery, ensure that the installation position is correct.
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