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Roomba Discovery and 400 series
Roomba Discovery/400 Series is circling.
If Roomba seems to lock into a repetitive circling pattern or reverses in a jerky motion and stops, this usually signals a problem. Here are three circling patterns you may encounter, and what they mean:
Circling Behavior 1: Roomba spins in circles and stops for a period, then makes an "uh-oh" sound and sings a 4-beep song. Watch video
How To Fix: If this occurs, you may need a software upgrade. Please contact the shop you bought it or iRobot Customer Support.
Circling Behavior 2: Roomba backs up briefly and spins in circles until the battery runs out. Watch video
How To Fix: Roomba's bumper sensor is likely obstructed or dirty; hold the Roomba in the air by the handle and slap the bumper briskly several times to dislodge any debris in the bumper sensor. You can also direct compressed air into the gap under the robot between the bumper and the main body. Start in the center and then angle the air outwards to the side.
Circling Behavior 3: Roomba backs up in an arc formation for 10 seconds, then stops and makes an "uh-oh" sound and 5 beeps.
How To Fix: The Cliff Sensors are likely dirty. Power Roomba off, empty the dirt bin and place the robot upside down on a flat surface, then wipe any dirt away from the Cliff Sensors.
Roomba Discovery/400 Series is beeping.
As Roomba 400 Series cleans, it communicates with songs, beeps, and indicator lights. It also uses sounds to let you know when there's a problem or it needs maintenance. Here are the most common error codes, what they mean, and how to resolve the problem.
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Roomba Says
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What It Means |
What You Should Do |
Plays 4-note song as Power button blinks RED
Play sound |
The battery is low and needs recharging |
• Connect the robot to the charger or Home Base® and recharge the battery. |
“Ehh”
Play sound |
The Cliff Sensors are dirty or malfunctioning
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• Pick up your robot and turn it over.*
• Check for any debris that might be caught underneath the front bumper, around the Cliff Sensors.
• Wipe the Sensors with a lint-free cloth or use compressed air to clean them out.
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| "Uh-oh" |
A wheel is stuck or is not touching the ground |
• Lift the robot and place it down again.
• Press the Clean button to restart the cycle. |
| “Uh-oh” plus 1 beep |
The robot's main brushes are stalled |
• Pick up your robot, turn it over* and remove the wire guard.
• Look for something blocking the brushes; you may need to remove and reinstall the brushes to remove the obstruction. |
| “Uh-oh” plus 2 beeps |
The robot's Side Brush is stalled |
• Pick up your robot and turn it over*
• Check to see if something is wrapped around the Side Brush.
• Remove the Side Brush with a screw driver and check for string or hair wrapped under it.
• Replace the Side Brush, place Roomba in the center of the room and press Clean to resume cleaning. |
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“Uh-oh” plus 3 beeps
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The robot's vacuum is stalled
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• Remove and empty the Dirt Bin.
• Use a flat-head screwdriver to remove the grill at the back of the Dirt Bin.
• Spin the Vacuum Impeller around, shaking out any debris that may be stuck.
• Replace the grill and the Dirt Bin. |
“Uh-oh” plus 4 beeps
Play sound
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The robot's Drive Wheels are stalled |
• Your robot may be stuck, or something may be caught in a wheel.
• If it's stuck, place it in the center of the room and press Clean. It should resume cleaning.
• If it is not stuck, lift the robot, turn it over* and look for something caught in the wheels. Test the wheels by pushing them in and out and making sure they rotate freely. Place robot in the center of the room, press Clean, and it should resume cleaning. If this continues to happen every time you clean, you may need a software upgrade. Contact iRobot Customer Support.
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“Uh-oh” plus 5 beeps
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The robot's Cliff Sensors are obstructed
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• Pick up your robot and turn it over.*
• Check for any debris that might be caught underneath the front bumper, around the Cliff Sensors.
• Wipe the Sensors with a lint-free cloth or use compressed air to clean them out. |
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“Uh-oh” plus 6 beeps
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The robot's Wheel Drop Sensors are overloaded (robot is stuck in a bumpy area)
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• Pick up your robot, place it in the center of the room, then power it off and then on again.
• Select the cleaning cycle you prefer and let it go to work.
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“Uh-oh” plus 9 beeps
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The robot's Wheel Drop Sensors have failed at startup
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• This failure requires you to contact iRobot Customer Support. Click here to send iRobot an email. |
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“Uh-oh” plus 10 beeps
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The robot's bumper is not registering obstacles
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• If the robot travels for a long distance without bumping into anything (which would be unusual), it might think it’s stuck and can’t move; press Clean again and it should resume cleaning. |
*IMPORTANT: Before placing the robot on its back, first empty the dirt bin to avoid spilling debris.
Roomba Discovery/400 Series Battery Maintenance Tips.
With proper care, Roomba's battery can last for hundreds of cleaning cycles before you need to replace it.
Here are some things you can do to extend Roomba's battery life and keep Roomba cleaning at peak performance:
Charge and store your Roomba in a cool, dry place. Keep your Roomba out of direct sunlight and away
from sources of heat such as windows, radiators, heating vents, and large appliances.
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Keep Roomba's brushes clean. If Roomba's brushes get clogged with hair or other debris, your Roomba will
strain to spin them, using more battery power than normal. Click here to learn how to remove and clean Roomba's brushes.
Occasionally reset your Roomba and fully discharge the battery.
Once every few months, you should reset your Roomba and fully discharge the battery:
Remove the battery and hold down the POWER button for at least 5 seconds to reset Roomba.
(For single-button robots, hold down the CLEAN button.)
Reinstall the battery and charge it until the POWER light turns green.
Allow Roomba to run until it plays the 4-tone "dead battery" song indicating that the battery has been fully discharged.
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If you use a Home Base, unplug it so Roomba does not attempt to dock when its battery is low.
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If you have a MAX button, use this to fully discharge your battery.
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If you do not have a MAX button, you may need to run several CLEAN cycles to discharge the battery.
Be sure to recharge your Roomba as soon as possible after the battery has been fully discharged.
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Remove the battery for long-term storage. If you will not be using your Roomba for more than a few weeks, fully charge the battery, remove it, and store it in a cool, dry place. When you want to use your Roomba again, insert the battery and fully charge it. Batteries can naturally degrade even when stored outside the robot. Fully charge your battery at least once every six months for optimal performance.
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