Perhaps the suction power slide on the handgrip is open.

可能握把上的吸力滑块已打开。

youdao

Press the "Hight power" button to increase suction power, for vacuuming heavier dirt and dust.

为吸附较重的污垢和灰尘，按“高能”按钮，以提高吸附能力。

youdao

Has greater suction power than a manual aspirator, it is still gentle enough to use on newborns.

电动吸鼻器比手动吸鼻器更加强劲，但是对新生儿来说也是足够的温和。

youdao

And, compared to the others, it had a much wider vacuuming area, which I liked, and the suction power of the Eletcrolux seemed superior, too.

FORBES: RoboVacuums