my inverter only has a USB port which was occupied by the wi-fi dongle. Theres no where else to plug it in. I used a USB cable.Are you certain you have the correct cable? Sounds like it isn't communicating properly. Assume you followed the setup guide:
Configuring Growatt SPH inverter
How to configure a Growatt SPH inverter in SolarAssistant.solar-assistant.io
Did you make a cable for it? Standard USB doesn't seem to work. That's why the instructions show how to make two different USB to RJ45 cables.
No just used a standard USB. Contacted solar assistant and they said the USB doesn't work need to use RS485 port. might be a bit beyond me to crimp new cables
suggested that earlier in the thread.Jumping in here, looks like there are different methods for different types of Growatt inverters. You mentioned yours is a Growatt SPH 3000TL BL-UP. Since it's the SPH model you have two choices.
Configuring Growatt SPH inverter
How to configure a Growatt SPH inverter in SolarAssistant.
There is no serial port. They must of changed the ports one my model. The USB doesn't work anymore. There is no RS232 port. The only thing a could try is RS485 port. But that is enclosed so I'll have to take the case off. Then cut cables with the correct adapter, which is all a bit above my skill set. Either I send the solar assistant back or see if an electrician can do it. Believe me if I could just plug a cable in I would have it working by now. They obviously don't like any other monitoring system other then there own, which would be okay if it want so bad.Yeah, but I didn't see mention of using the serial port, which is a cable you can just buy and plug in.
Just so others are aware, this worked a treat, thank you very much
