In case that the intelligent water meter does not discharge water, and the external factors such as water cut-off are excluded, the user card shall be inserted in time to query the remaining water quantity. When the water meter is normal and the balance is sufficient, the LCD part displays the remaining water quantity and the "valve open" sign.

当显示为“阀关”，“报警”，说明剩余水量不足，用户必须持用户卡到购水点购水，完成充值后插卡开阀，水表才能再次出水。

When the display is "valve off" and "alarm", it indicates that the remaining water quantity is insufficient. The user must hold the user card to the water purchasing point to purchase water. After charging, insert the card to open the valve, and then the water meter can be discharged again.

当内部电源电量不足时，液晶显示部分会显示“欠压”、“关阀”，首次提示后可插入用户卡重新开阀供水，电池仍能继续保持24小时左右的供电，用户应尽快通知维修人员更换电池。

When the internal power is insufficient, the LCD will display "undervoltage" and "valve closing". After the first prompt, the user card can be inserted to re open the valve for water supply. The battery can still maintain power supply for about 24 hours. The user should inform the maintenance personnel to replace the battery as soon as possib