Robot vacuum reports C20 and stops; may say 'Please move the robot to a new location' or 'Navigation failure'.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Blocked sensors (LDS, camera, IR), Robot stuck under furniture, Strong sunlight or dark reflective floors, Internal navigation module error

Safety first: Turn the robot OFF.

Relocate robot: Move it to an open, well-lit (but not direct sunlight) area with a non-reflective floor.
Clean all sensors: Wipe the top camera or LDS window, front IR sensors, and underside cliff sensors with a soft cloth.
Restart mapping: In the Ecovacs app, clear the existing map (if needed) and start a new mapping run.

If C20 recurs frequently: A navigation sensor (camera, LDS, or IMU) or the main board may be failing and require professional diagnosis.

Professional Required 5/5

Navigation Sensor Module (Camera/LDS) or Main Control Board

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