The Xiaomi Robot Vacuum H40 can fail to start due to insufficient battery power, operating in temperatures that are too low (below 0°C) or too high (above 40°C), or other reasons.
To restore the robot vacuum to normal operation, please follow these steps:
1. Ensure the battery is sufficiently charged by placing the vacuum on the auto-empty station;
2. Use the vacuum only within the recommended temperature range of 0°C to 40°C to avoid temperature-related startup problems;
3. Inspect the vacuum for any obstructions or objects that can be causing it to get stuck and remove them;
4. Restart the robot vacuum to clear any temporary system errors;
5. If the problem persists, contact after-sales service for professional inspection and assistance.