Fronius Galvo, Primo, Symo State 475 Error By Simon Rogers|2024-08-23T15:13:31+10:00August 6th, 2018|All posts, Solar Inverter Fault & Error Messages, Solar power, Solar Power Inverters| Fronius Galvo, Primo, Symo State 475 Error The State 475 Error Message on Fronius Galvo, Primo and Symo inverters are telling you that the inverter has Read More