I have an ess system with an ac coupled fronius on the ac out, both the ccgx and fronius are connected to the LAN via WiFi, the ccgx will not find the pv inverter and after being on line for about 2 hours is now off line showing a DNS server error, is there something wrong with this configuration? Any suggestions? Would be disappointing if the solution was hard wiring the Ethernet as the tech docs say you can do either..