Warning triangle on control panel

[PoloTim]

A warning triangle appeared to be flashing on the control panel. Checked the instructions in the manual and followed the instruction to press the down button to see this image. I currently have no fresh water in the holding tank for the tap in the sink. Any thoughts or help would be appreciated. Thanks

 

[Lizziekenn]

Telling you that the tank is empty

 

[PoloTim]

Thanks so much for your help with this