Troubleshooting
Disc brake system fault
Brake level
Disc brake
10
The display shows error code , which illustrates the failure to stop the bike by brake lever.
This means the wires are not connected well or the brake lever is damaged. We suggest the
customer can check whether any screw is loose and the lever can be returned to the position after
grabbing. Ruling out the reasons above, the customer should replace the brake lever.
After bike assembly, the rubbing noise from disc brake can be heard when riding, which means
the disc brake needs adjustments. (Please refer to our disc brake adjustment video) Notice: The
abnormal condition of disc brake usually results from the crush of shipment. This is a universal
situation in our industry. The customer should do adjustment after assembly. The customer can
search “bike disc brake adjustment” on Google or contact us to get a video link. The customers
can turn to local bike shop’s staff for help if they fail to do adjustment.Please do not grip the brake
lever before assembling the brake disc, otherwise the oil will leak.
Shifter system fault
The failure to change the speed by shifter with the noise or chain beating illustrates the adjustment
is not complete. The customer needs to adjust the shifter lever and rear shifter. (Please contact us
to get a video link)
Notice: The abnormal condition of shifter usually results from the crush of shipment. The custom-
ershould do adjustment after assembly. This is a universal situation in our industry. The customer
can search “bike shifter adjustment” on Google or contact us to get a video link. The customers
can turn to local bike shop’s staff for help if they fail to do adjustment.
Driver system fault
Error code
Error code on display and no response from throttle could be caused from controller wires
damage, throttle extension wire damage or the loose of wires connections. Ruling out the reasons
above, the customer should replace the throttle and extension wires.
The sensor issue
No power assist in power assist riding mode. The customer should check whether the wires
damage or loose connection between the sensor and controller. Ruling out the reasons above,
the customer should replace the sensor.
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