Error one (1) means your robot is on an obstacle or an uneven surface and a side wheel is stuck. If this is the case, lift your robot off the floor, place it in the center of the room, and restart the clean cycle. If this error occurred on a flat surface, check the wheels for obstructions.
***Note:*** Use a Virtual Wall® to keep Roomba® away from problem areas.
900 and 800
700, 600 and 500
# Push the wheels up and down several times and shake out any loose debris that may be trapped in the wheel well.
# Briskly turn both wheels by hand, and make sure they turn freely, and that each wheel exhibits the same amount of resistance.
Please visit the [link|https://store.irobot.com/default/parts-and-accessories/|iRobot Store - Parts and Accessories|new_window=true] or use an [link|https://about.irobot.com/where-to-buy?|authorized retailer|new_window=true] to order a part. If you believe you're in warranty, please contact [link|https://homesupport.irobot.com/s/article/200|iRobot Customer Care|new_window=true].
For expedited service, please have the following ready:
* Your robot charged and with you.
* Your robot's [link|https://homesupport.irobot.com/s/article/274|Serial number|new_window=true].
* For warranty claims: Proof of purchase (receipt or invoice for purchase from an [link|https://about.irobot.com/where-to-buy?|authorized retailer|new_window=true]).