OP
TrickyDicky101
So what did the installer's check reveal? Alan
Hey Alan, installer confirmed that maximum voltage (at some point since installation) had been 700V (ie in excess of the spec of 615V) and the maximum peak output had been 3100W. He did say he would take up my concerns with Fronius technical staff, but I know he's working like crazy at the moment due to the FITs deadline, so I'm not sure when that might be. What I need is the clear sunny days to benchmark my system against similar others (like yours). Weather's looking pretty rubbish at the moment though