Why doesn't the WINBOT W2 return to its original position automatically?

After cleaning, the WINBOT W2 will automatically return to the origin. However, due to calculation accuracy, there may be a slight deviation (<27cm). If the deviation is large due to external environmental factors, it may not be convenient to reach and get the robot. In this case, please use the ECOVACS HOME App control to return the WINBOT W2 back to a reachable position.