Connect and configure Growatt SPA inverters
Follow the steps below to connect a Growatt SPA to SolarAssistant.
Step 1 - Connect RS232 monitoring cable
A USB serial cable
can be plugged into WiFi RS232 port located on the bottom of the inverter. This is a normal USB serial cable
available from most electronic stores.
As this is the only monitoring port on the Growatt SPA, the WiFi RS232 dongle and SolarAssistant can not be used at the same time.
From our tests, the Growatt SPA is not readable via the RS485 port. If you managed to read it via RS485, please let us know.
Step 2 - Configure SolarAssistant
On the configuration page, select "Growatt" as your inverter model.
Each RS485 USB cable will show up as a USB device. Select all ports that are connected to Growatt inverters.