PV Communication Wiring
Tesla Solar Inverter with Site Controller (1538000-45-y) does not have a PV Communication board. For the Ethernet port on Solar Inverter with Site
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Solis Data Logger Not Communicating With Inverter
It now looks like the inverter is going to be replaced under warranty. This seems absolutely crazy, as it could be something as simple as a loose connection on the PCB.
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Deye Inverter WiFi Communication Stick LSE-3: The Real
Yes, the Deye Inverter WiFi Communication Stick LSE-3 is specifically designed to enable WiFi connectivity for Deye and Solarman-compatible inverters, including models like the Deye SUN-5K