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Error Decoder

Your robot is beeping at you. Tell us what it says, or what it's doing, and get the fix in plain English.

13 fixes

  • Any brandMain brush or side brush error

    What's going on

    Something is wrapped around a brush and the motor cannot turn it.

    Try this, in order

    1. 1Turn the robot off and flip it over.
    2. 2Pop out the main brush and pull or cut away hair, especially at both ends where it hides under the caps.
    3. 3Unscrew or pull off the side brush and clear the post underneath.
    4. 4Check the brush spins freely by hand before putting it back.

    Time to call support: If a clean brush still triggers the error, the brush motor may be worn. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandMap disappeared or rooms got merged

    What's going on

    The robot could not match what it sees to its saved map, often because it started away from the dock, furniture moved a lot, or an update reset it.

    Try this, in order

    1. 1Always start cleans from the dock, not from the middle of a room.
    2. 2In the app, look for map history or map backup and restore the last good map.
    3. 3If there is no backup, open the doors, tidy cables and loose rugs, and run one full mapping clean.
    4. 4Turn on map saving or multi-floor maps in the app so backups are kept.
  • Any brandMop leaves streaks or the floor stays dry

    What's going on

    Either water is not reaching the pads, or the pads are too dirty to pick anything up.

    Try this, in order

    1. 1Check the clean water tank is filled and seated firmly.
    2. 2Wash or replace the mop pads. Pads that feel stiff or greasy are done.
    3. 3Clean the dock's wash tray and filter if it has one.
    4. 4Use only the cleaning solution the brand recommends. Other soaps can clog the lines and leave film.

    Time to call support: If the tank is full and no water ever reaches the pads, the pump or lines may be blocked. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandMower gets stuck or says it is trapped

    What's going on

    The wheels lost grip or the mower drove into a spot it cannot back out of.

    Try this, in order

    1. 1Note where it stops. One repeat spot means a hole, root, or soft patch to fill or block off.
    2. 2Clean mud and wet clippings off the wheels so the tread can grip.
    3. 3Avoid mowing right after heavy rain.
    4. 4Check the slope there is within what your model is rated for. Steeper models exist if it is not.
  • Any brandMower loses position or satellite signal

    What's going on

    Wire-free mowers that use satellites need a clear view of the sky at both the mower and its antenna. Trees, walls and roofs block it.

    Try this, in order

    1. 1Check the antenna or reference station has power and a clear view of open sky, away from walls and metal roofs.
    2. 2Move the charging dock to a more open spot if the mower loses signal right at the start.
    3. 3Trim branches over problem areas, or mark deep shade under trees as a no-go zone if your model cannot see there.
    4. 4Wait a few minutes after power-up for the signal to settle before mowing.

    Time to call support: If signal is poor everywhere in an open yard, the antenna or its cable may be faulty. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandMower says it is lifted or tilted

    What's going on

    Lift and tilt sensors stop the blades when the mower thinks it has left the ground. Bumpy ground, a steep edge, or a stuck sensor can set them off.

    Try this, in order

    1. 1Move the mower to flat ground and restart it.
    2. 2Clear grass clippings packed around the wheels and under the body.
    3. 3Press down gently on each corner of the shell. It should move and spring back evenly.
    4. 4If it happens at the same spot every time, that spot is too steep or uneven. Mark it as a no-go zone or level it.

    Time to call support: If it reports lifted while sitting on flat ground with a clean underside, a sensor needs service. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandMower won't dock or charge

    What's going on

    The mower cannot line up with the charger, or the charging contacts are dirty.

    Try this, in order

    1. 1Check the charger has power and its cable has not been cut or chewed.
    2. 2Clean the charging contacts on the mower and the dock with a dry cloth or fine sandpaper if they are green or dull.
    3. 3Make sure the ground in front of the dock is flat and firm for about six feet, with no ruts.
    4. 4Clear clippings and mud from the dock's base plate.

    Time to call support: A powered dock that will not charge a clean mower points to a charger or battery fault. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandRobot can't find its dock

    What's going on

    The robot finds its dock by a signal the dock sends out and by remembering where it started. If the dock moved, is unplugged, or is hidden, the robot wanders and gives up.

    Try this, in order

    1. 1Check the dock has power: a light should be on, and the plug should be firmly in the wall and in the dock.
    2. 2Put the dock back where it was when the map was made. Even a small move can confuse the robot.
    3. 3Clear about 1.5 feet on each side and 4 feet in front of the dock.
    4. 4Wipe the metal charging contacts on the robot and the dock with a dry cloth.
    5. 5Carry the robot to the dock, let it charge, and start the next clean from there.

    Time to call support: If the dock has power and the robot still cannot find or charge on it after these steps, the dock or battery may be faulty. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandRobot spins in circles or says its laser is blocked

    What's going on

    The spinning sensor on top (or the camera) cannot see the room properly, so the robot does not know where it is.

    Try this, in order

    1. 1Look for hair or a thread wrapped around the turret on top and remove it. It should spin freely with a light push.
    2. 2Wipe the turret window and any camera lens with a soft dry cloth.
    3. 3Check the robot is not wedged under furniture that presses on the turret.
    4. 4Restart the robot: hold the power button until it turns off, then turn it back on.

    Time to call support: A turret that will not spin, or grinds, is a hardware fault. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandRobot stops and says it is at a cliff or edge

    What's going on

    Sensors underneath look for stairs. Dust on them, or a very dark or striped rug, can look like a drop.

    Try this, in order

    1. 1Flip the robot over and wipe the small sensor windows along the front edge with a dry cloth.
    2. 2If it only happens on one dark rug, that rug is fooling the sensor. Mark it as a no-go zone or lift it on cleaning days.
    3. 3Make sure the front bumper springs back when pressed and is not stuck in.

    Time to call support: If it reports a cliff on a plain, light floor with clean sensors, a sensor has probably failed. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

  • Any brandRobot won't connect to Wi-Fi

    What's going on

    Most robots only join 2.4 GHz Wi-Fi. If your router blends 2.4 and 5 GHz under one name, pairing often fails.

    Try this, in order

    1. 1Stand next to the router with the robot and your phone during setup.
    2. 2In your router settings, give the 2.4 GHz band its own name and join the robot to that one.
    3. 3Turn off VPNs and mobile data on your phone while pairing.
    4. 4Avoid Wi-Fi passwords with unusual symbols; some robots reject them.
    5. 5Reset the robot's Wi-Fi (usually two buttons held together; check the manual) and try again.
  • Any brandUneven cut or missed strips

    What's going on

    Dull or missing blades, wet grass, or cutting too much height at once.

    Try this, in order

    1. 1Turn the mower off, put on gloves, and check the blades. Replace any that are bent, chipped or dull; most brands suggest every one to two months in season.
    2. 2Raise the cutting height and bring it down over a few mows instead of all at once.
    3. 3Mow when the grass is dry.
    4. 4Clean packed clippings off the underside so the blade disc spins freely.
  • Any brandWheel stuck or wheel error

    What's going on

    A drive wheel cannot turn, or the robot thinks it has been lifted off the floor.

    Try this, in order

    1. 1Move the robot to an open, flat spot and restart the clean.
    2. 2Push each drive wheel in and out. It should spring back smoothly.
    3. 3Spin each wheel by hand and pull out any hair, string or grit caught around the axle.
    4. 4Check the small front caster wheel pops out and turns freely.

    Time to call support: A wheel that will not spring back or turn after cleaning needs replacing. Contact the brand's support and tell them what you already tried. If the robot is under warranty, do not open it up.

These are general fixes gathered from owners. Brand-specific error codes are being added as the groups solve them. Always follow your manual's safety steps, and turn the robot off before touching brushes or blades.