Here are some technical information about the display that might help interpret and fix any issue you are experiencing with the controller.
1 - On/Off
Press MODE and start the display. With display on, more than 2 seconds press MODE to turn of power supply of the e-bike
2 - Full viewing area:
3 - Icon Definition :
4 - Assist Level :
Press UP or DOWN to change the level.
5 - Button operation:
- Hold "UP" for 2 seconds to turn on back light.
- Hold "UP" for 5 seconds to turn on/off assistance.