Possible causes:
1. Rolling brush may be stuck by large particles objects
2. The machine is not placed on the charging base
3. The machine is on the base, but not in the charging state (not connected to the power or the machine and the base disconnected)
4. Machine power less than 10%, can not start self-cleaning (deep self-cleaning power less than 30%, can not start)
5. Dirty tank full of water / sewage tank is not installed in place
6. Clear water tank is not installed in place / lack of water in the clear water tank
Solution:
1. Check the status of the rolling brush. If the brush is stuck, please clean the brush
2. Place the charging base and turn on the power
3. Turn on the power or put back the charging base
4. Check the state of the dirty tank, clean / install the dirty tank
5. Check the status of the clear water tank, install the clear water tank / clear water tank filled with water