Pump inside has air
Before startup, cannot fully inject water
2进水阀没开或阀芯脱落。
Didn’t open the inlet water valve or
Valve plug fall off
3吸水底阀堵塞或底阀不严。
Suction bottom valve is blocked or
Bottom valve is lose.
4水泵倒转。
Water pump reverse
5水箱水位太低。
Water tank level is too low.
6泵内有杂物。
Pump inside has sundried.