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RS485 port

The USB port on the inverter can not be used for monitoring. You need to connect it via an RS485 cable plugged into "RS485-2" port that will need to be crimped as per the table below.

SPH-TL-BL-US RS485 connection
Pin 1RS485B
Pin 2GND
Pin 3-
Pin 4-
Pin 5RS485A
Pin 6-
Pin 7-
Pin 8-

You can also explore alternative RS485 adapters that might be available locally in your country. Each inverter will require it's own USB cable.

Steps in SolarAssistant

On the configuration page, select "Growatt" as your inverter model.

Select Growatt inverter

Then, make sure you select the relevant Growatt inverter model.

Select Growatt inverter model

Devices connected via USB will show up. Select all ports that are Growatt inverters.

Select Growatt SPF USB ports

Click connect:

Select connect

Parallel installations

With Growatt inverters you will need to connect each inverter with its own cable.

Troubleshooting

Please note that these units come with an AI mode that can cause issues. If this is enabled, it supersedes changes to the inverter's settings. If you are experiencing issues with your inverter settings, please disable the AI mode.