E16

Tesvor Front IR / Wall Sensor Error

Robot reports E16; may be unable to return to dock or complete mapping.

Safety Warning

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

Dust on front IR sensors, Sensor window scratched or covered, IR sensor board loose, Failed front IR sensor module

How to Fix / Troubleshooting

Safety first: Turn off the robot.

Clean front sensors:

Locate the front-facing infrared or wall-following sensors on the front bumper or body.
Wipe the sensor windows gently with a soft, dry microfiber cloth.
Ensure there are no stickers or decorative covers blocking the sensors.

Test navigation:

Power on the robot and start a cleaning cycle along a wall. Observe whether it can follow the wall and avoid obstacles.

If E16 persists: The front IR sensor board or its cable may be faulty. Internal replacement is required; contact a technician or Tesvor support.

Repair Difficulty

Medium 3/5

Required Part

Front IR Sensor Board

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