Robot mower frequently stops with the message to clean underside, but no specific error code.

Safety first: Turn OFF the mower, remove the key, and wear gloves. Never clean with a hose or pressure washer.

• Clean deck: Turn the mower over and remove all grass clippings and dirt from the cutting deck, wheels, and sensors using a brush or plastic scraper.
• Check sensors: Locate underside safety sensors and ensure they are free of debris.
• Allow to dry: If wet grass is sticking, let the mower dry in a sheltered area before use.
• Regular maintenance: Clean the underside weekly during heavy growth periods to prevent recurring stoppages.

Persistent messages after thorough cleaning may indicate a faulty sensor that needs replacement.