Do you have one of the old Fronius IG solar inverters, the larger ones IG40 and IG60? You may get the error code STATE 516 coming up on it.  If you do, this means “One power stack exceeds the permitted limit of error messages per day (>50x)”.  Great, I hear you say, what does that … Continue reading Fronius Solar Inverter IG40/60 State 516 Adelaide