Since End of December I observe the same behavior of my SE-7K. It has now firmware 4.24.22. My last manual update of firmware was before over one, nearly two years. I assume it was an update initiated by SolarEdge themselves. Venus OS is still unchanged the latest official release 3.67. For years the modbus/sunspec communiation was fine. Now it’s broken in the same way like mentioned before by other users. Disconnects and connects every some minutes.
From Ethernet connecting point of view and connection to SolarEdge Monitoring everything seems to be fine.
As fas as I understood till now the only solution is to request an firmware downgrade to 4.22.44 by SolarEdge. Is this still the current situation or should I use the current beta of Venus OS?
There is also a last post from @mblaauw about a script for Node Red. But I don’t really know what he tries to say and what the script will do. Perhaps because of a language mix.
Can somebody suggest, which way I should go? Thank in advance!
”I did not update the firmware manual for this inverter at least for one year (nearly two years), because this installation worked fine and there was no need for an update. Since December 2025 I observe regular disconnects/drops of modbus/sunspec connection every some minutes to the Victron emergency/battery installation and main monitoring of the whole installation. Connection to SolarEdge Monitoring is fine and also the Ethernet connection within the network is fine. It seems that SolarEdge initiated an unrequested firmware update to 4.24.22. This issue is much known for many users of SolarEdge and Victron equipment for nearly one year now. At least the firmware 4.22.44 should work properly. Before your update there must be at least firmware 4.22.39 from November 2024 on my installation. Therefore please downgrade to 4.22.39 or at least 4.22.44. For future: Please also don’t update firmware by yourself. This will help to maintain stability. I use the Internet connection only for monitoring reasons. If there should be security reasons for a necessary update because of internet risks, please inform me before. Should this Modbus/Sunspec connection issue still not be fixed until this moment, nevertheless I will stay with the old firmware and disconnect the inverter completely from the external network (internet) via firewall (deny all) on this site.”
Hello Michel,
I have implemented your script and it is working except the part to transfer the powerdata to the virtual device in VRM.
(I can read the parameters in INV1 and INV2 Read (27 values) but in the Parse INV1 and INV2 I see errors, see pictures.)
Update : The errors were warnings, the Parse nodes are working correctly. Now I have to find out how to implement the virtual device in VRM.
I can see it in the main dashboard of VRM but I don’t know (yet) how to transfer the power data….
I’ve been trying (via my installer) to get SolarEdge to downgrade my firmware for over a month now. They’re simply not responding to our queries…
So I’ve decided, since I have enough room in my electrical cabinet, to just put a EM540 meter after the SolarEdge breaker and connect this with a rs485 - usb cable to the cerbo gx.
Can someone confirm that I just need to remove the current PV inverter on the cerbo, and replace it with a rs485 energy meter, configured as PV inverter?
Everything else (APS mode frequence shifting) will still work?
Ticket was successfully closed around 3.p.m. Downgrade to 4.22.44 was done by SE. I assume it happens around 2:15 p.m. Because of a short down in production during this sunny day. I was requested to observe the behavior. I will observe for some days. But currently it looks fine.
As you can see, the reaction of SE was very fast. At least in my case. I opened a ticket directly via the support ticket from the monitoring page from the installation directly. I got an ID and was able to follow the ticket status. Sure your installer really opened the ticket?
In my case I’m the official installer by myself.
Apparently you can create a case as non-installer as well, so I did so last week, and they performed the downgrade for me today.
I don’t know what my installer did wrong, they did have a case number, and I was CCed on one of the mails they sent to solaredge support, so it’s not like they did nothing.
I will still install the EM540 though. I have it now anyway (but still waiting on a DIN terminal block to wire up the N since the N terminal on the EM540 only takes up to 2.5mm2 wires), and you never know when solaredge might accidentally upgrade the firmware again…
