Flow Speed says 0

I’ve just bought my flux Beambox Pro machine, tried to do a laser cut cake topper out on 3MM wood. It’s stopped halfway through the project and shows Error #900. The water is tank is full of distilled water to the top I ran the maintenance pump function multiple times, every time I restart the machine it stops again . I cannot get it to work. When running the instructions for #900 it says to do flow speed test and it came back at zero. Could this be the problem how do I fix it?

I would say you need a new pump , they are easy to put in

The machine is brand-new I’ve only been able to do one cut so I tried to update the firmware and It was able to do a couple more cuts then after that it went back to 0 …might have to call flux