What should I do if the machine was used without the dirty water tank installed?

The Aero Pro can still be started and will dispense water normally even when the dirty water tank is not installed. 

However, to prevent dirty water from spilling, the machine will automatically suspend the suction function. Please note that this may result in water pooling on the floor.

If you used the machine without the dirty water tank installed, please promptly clean up any residual water on the floor, install the dirty water tank properly, and then continue use for a better product experience.