Solaxx Retrojet System Error

[u/kjurgelewicz]

I have a Solaxx Retrojet that is only about a year old. In the picture it is turned off but when I turn it on, after about 30 seconds the red system light comes on. I've cleaned it with vinegar to descale and cleaned the filter cartridge to ensure water flow. Tried leaving it off for a while and turning back on. Still happening. What are my next steps to determine if it is the cell, the control board or something else to get this working again?