Fronius smart meter not working - status Cd0000


I noticed a few days ago that my consumption figures were really crazy. Either 100% or zero. The Fronius single phase smart meter is showing status Cd0000 with the first 0 flashing. When the meter starts it shows Fr 51.9 then the kWh flashes up and it just sits on Cd0000. The red LED also flashes. I’ve tried pushing the button a few times but nothing happens. Fronius are saying I may need a new meter.

Has anyone else had this happen?