Why does my Fronius show State 306 or 307 in the morning?

Short answer

Fronius State 306 (low PV output) and 307 (low PV voltage) mean there isn't enough power or voltage from the panels to feed the grid. Fronius says they appear routinely early morning and evening and are not faults. If they show in good sunshine, check the panels aren't covered and the DC switch is on, then contact your installer.