What does error code 4 mean on the Hobot LEGEED7 robot vacuum and how can it be resolved?

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Error code 4 on the Hobot LEGEED7 robot vacuum generally indicates a problem related to the device's navigation or sensors. Here’s how you can identify and resolve this issue:

Steps to resolve error code 4:

Clean the sensors: Check that the vacuum's sensors are not obstructed by dust, dirt, or debris. Use a soft, dry cloth to gently clean them.
Inspect the wheels: Ensure that the wheels are not blocked by hair, threads, or other objects. Remove any obstacles and clean the wheels if necessary.
Restart the device: Turn off the vacuum, wait about 10 seconds, then turn it back on to reset the internal systems.
Check the cleaning surface: Use the vacuum on suitable surfaces. Very thick carpets, uneven floors, or obstacles can disrupt navigation and cause this error code.

If error code 4 persists after these checks, it may be necessary to contact customer service or a specialized technician for further diagnosis.

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