Robot vacuum reports E18 and stops; often associated with overcurrent on side brush or main brush on some models.

Safety first: Immediately turn OFF the robot and remove it from the dock. If the robot has been exposed to water, do not attempt to charge or use it.

Inspect for moisture:

• Check the underside for signs of water or damp debris.
• If wet, dry the exterior thoroughly and let the robot air-dry in a warm, dry place for at least 24–48 hours before further testing.

Check brushes:

• Remove and clean the main and side brushes, ensuring they rotate freely.

Test cautiously:

• After ensuring the robot is completely dry, power ON and start a short cleaning test.

Advanced: If E18 persists, there may be internal damage to the brush motor or mainboard from a short circuit. Professional diagnosis and part replacement are required; continued use may pose a safety risk.