Help Library: Help Library: [LG CordZero R9] I hear the voice error message 'The wheels do not touch the ground. Move the roboking to a flat floor.’

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<div class="content-service-view">
            <p class="lg-red">※ The error message may be different from the actual message you hear from the product.</p>            
<h2 class="tit">Try this</h2>
            <p>
                After nicely arranging the surroundings, move the roboking to a flat ground.<br>
                If the same error message occurs repeatedly, then clean the cliff sensor with a soft cloth or cotton ball.
            </p>            
<div class="img-box">
                <img alt="The vacuum cleaner gets stuck on slopes or uneven floors and cannot be moved. It can be moved freely on flat floors." src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=VT5ltUhFWyEuXRK7nkQAw&amp;portalId=P1">
                <img alt="Turn the product over and wipe the sensor with a soft cloth and cotton swab." src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=lQBIlOljNPUhX5Y9iWlRRg&amp;portalId=P1">
            </div>
            
<div class="tip-box">
                <strong class="tip-tit">Warning!</strong>
                <p>
                    1. Do not use it on a tilt or uneven ground.<br>
                    2. Do not use volatile or organic solvents (thinners, solvents, acetone, etc.) to clean the product. It
                    can damage the product.
                </p>            </div>
            <p>
                <strong>Wheel stuck – wheel stuck on its own</strong> <br>
                If the wheel is stuck, then place the roboking upside down on a soft cloth and press and release the wheel
                vertically 5 times.
            </p>            
<div class="img-only">
                <img alt="Push the wheel up and down more than 5 times and then remove it." src="https://gscs.lge.com:/gscs/support/fileupload/downloadFile.do?fileId=YgMfQdOQgMIa4Hqtz2g21A&amp;portalId=P1">
            </div>
            <p>
                <strong>Wheel stuck – stuck in the environment</strong> <br>
                In space such as door gap, fan, laundry drying rack, gym machine, chair, and table leg and so on, the
                roboking might get stuck and not be able to get out.<br>
                Manually lift it and move it to the flat floor with no obstacles.
            </p>            <p class="lg-red txt-idt">
                ※ If the same error persists, request inspection by an LG service technician.
            </p>            <p class="help-txt">This guide was created for all models, so the images or content may be different from your
                product.</p>        </div>
    
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[LG CordZero R9] I hear the voice error message 'The wheels do not touch the ground. Move the roboking to a flat floor.’

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