W030 Code
Check Stevens W030 e-Bike Error Code :
Indication conditions
Two or more assist switches are connected to the system.
Operational restrictions being displayed
Unable to perform gear shifting.
Solution
Connect to the e-bike screen cable and change the function assignments of one of the switch units to the shift switch.
Connect only one assist switch, then turn the power ON again.
If the error persists, contact your place of purchase or a distributor for assistance.