why does the sweeping robot moving left and right and pausing?

If this hAppens, it could be due to the following reasons: checking whether all the floor sensors with SoCket loose/fallen; Gently breaking the floor sensor wire with your hand to check if fallen off, if none of the situation hAppened, you need to contact aftersales to replace the motherboard; Checking if the floor sensor lens is obscured or sticky; replacing a whiter colored floor to run the sweeper. Observe if the left and right backward or red light alarm status still exist.