CaMP3R
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CaMP3R reacted to meetyg in Must Power PH1800 Inverter Oddities/QuestionsInteresting, I also have a PH-18 (3kw, 24v) and haven't noticed such an issue using SolarAssistant.
I'm using Raspberry Pi 4 also, with USB directly connected to the inverter USB port.
I have pulled the USB from the Pi and connected to PC, back and forth, never did I need to restart the Pi or the inverter.
Can you try to install SolarAssistant on your Pi (on a separate SD card) and see if it gives you problems ?
You can install SolarAssistant with a trial license, so no need to buy just for this testing.
Have you tried using a different USB cable? Preferably one with a ferrite ring to decrease chance of interference.
Also, do you have a good stable power supply for the Pi 4? It's known to be power hungry (relatively that is...) and very finicky when it comes to power supply.