I then isolated the turbine and allowed the inverter to shut down. I then re-connected the turbine and waited. As soon as the inverter had finished grid monitoring it immediately started outputting at 2kws.
Since then all has been fine. I guess something went wrong with the grid monitoring in the initial start up?
Hope it dosen't happen again. I wonder if this is the same problem that others have had recently leading to the inverters over volting?