Here are the hints that I googled and found: Here are some troubleshooting tips for robotic pool cleaners: Check that the cleaner is plugged in tightly and that the power cord has no damage. If the cleaner gets stuck, check the brushes, drive tracks, and impellers for lodged debris. If the machine doesn’t seem to be moving properly, lift it partially out of the water to see whether the unit is sucking water as it should. Ensure that your robotic pool cleaner is properly charged or connected to a reliable power source. Inspect the motor and drive system for malfunctions that can prevent the cleaner from moving around the pool effectively.
Pool Vacuum Charger Blinking Green When the charger of your Aiper Seagull pool vacuum blinks green, it typically indicates that the device is charging properly. However, if the charger is not functioning correctly, it may be due to a faulty charging cable or connection, battery degradation, or environmental factors affecting the charging process. It is recommended to inspect the charging cable for any visible damage and ensure that the connectors are clean and free of debris. If the cable is damaged, consider replacing it with a compatible one. Additionally, check the battery health by fully charging the vacuum and then monitoring its performance. If the vacuum runs for significantly less time than expected, it may be time to consider a battery replacement
哪位达人知道怎么回事吗？
等我知道了原因，修好了，来给大家汇报一下啊。 先谢谢各位动手能力强的大拿了。
Here are some troubleshooting tips for robotic pool cleaners:
Check that the cleaner is plugged in tightly and that the power cord has no damage. If the cleaner gets stuck, check the brushes, drive tracks, and impellers for lodged debris. If the machine doesn’t seem to be moving properly, lift it partially out of the water to see whether the unit is sucking water as it should. Ensure that your robotic pool cleaner is properly charged or connected to a reliable power source. Inspect the motor and drive system for malfunctions that can prevent the cleaner from moving around the pool effectively.
我的解决办法是：充电，再试。
可能是电子部分坏了, 电源和机器驱动部分都有可能.
谢谢回复！版上的能人真不少啊。而且还挺热心。赞！
那个仅靠电源插座的盒子，是变压器（交流变直流，而且降压），还是一个充电器呢？
When the charger of your Aiper Seagull pool vacuum blinks green, it typically indicates that the device is charging properly. However, if the charger is not functioning correctly, it may be due to a faulty charging cable or connection, battery degradation, or environmental factors affecting the charging process. It is recommended to inspect the charging cable for any visible damage and ensure that the connectors are clean and free of debris. If the cable is damaged, consider replacing it with a compatible one. Additionally, check the battery health by fully charging the vacuum and then monitoring its performance. If the vacuum runs for significantly less time than expected, it may be time to consider a battery replacement
回顾一下全过程。每次开机吸尘器能动，说明一切电路都是通的，也就是说所有电子原件都是好的。只是动力似乎不足。而电池没电时，的确会出现关机再开机能提供一点点电力。这个常识咱们在日常生活中处处可见。于是，按照这个逻辑推理，我终于找到了正确答案，修好了吸尘器。
谢谢各位！