The inverter disconnects and reconnects frequently. about ha-abb-powerone-pvi-sunspec

[alexdelprete]

The log is pretty clear:

2023-10-17 10:28:35.628 DEBUG (MainThread) [custom_components.abb_powerone_pvi_sunspec] Check_Port: opening socket on 192.168.1.130:502 with a 3.0s timeout.
2023-10-17 10:28:38.633 DEBUG (MainThread) [custom_components.abb_powerone_pvi_sunspec] Check_Port (ERROR): port not available on 192.168.1.130:502 - error: 11
2023-10-17 10:28:38.634 DEBUG (MainThread) [custom_components.abb_powerone_pvi_sunspec] Inverter not ready for Modbus TCP connection

That means the component couldn't open a socket on port 502 of the VSN card. It's a network issue that you need to check. Check wifi of the VSN card. Also, from HA container/host, do a tcp port check on inverter:502 every 30s to see if it's available.

Also, there wouldn't seem to be any problems using the inverter's official application (Energy Viewer), because it shows normal values.

The energy viewer app works through cloud, the VSN card sends data to the cloud every 5m and you monitor that through the mobile app or website. You can't compare that to the component, that works almost real-time.

[Pippo1989]

Hi,

As suggested, I ran some tests, including checking the TCP connection, but I didn't get any results that could explain what caused the problem.

I also checked that the configuration of the wifi network through the access point generated by the inverter was carried out correctly.

On the other hand, the frequent disconnections appeared out of the blue, without any intervention on my part: therefore it is not even possible for me to make any hypotheses about the cause of the problem.

As a contribution, I tried to install the SunSpec (generic) integration using the same configuration. The result is that the sensors obtained (including AC/DC production) are not subject to disconnection, unlike this integration.

Thank you.

[alexdelprete]

Can't tell you why a few lines of python code can't make a socket connection reliably in your case, if not because of wifi network issues.

The socket connection is a very basic test, if it fails, there's a network problem. That's not my opinion, it's a fact.

Many times I had received issues saying I have this X problem with this integration, while ha-sunspec works, then after some time they discovered they had network or HA or hw issues (mostly RPi related) on their side. And yes, problems appear all of the sudden, they don't warn you before, typically they just happen out of the blue. :)

But I think you found the solution: use the Sunspec integration, it's an excellent alternative.