I just updated the firmware on a Cerbo GX to version v3.42 and the fronius GEN24 is now not showing on the Dashboard. The inverter is shown in the device list and in the VRM devices. However, since it is not displayed on the dashboard, the inverter PV generation is no accounted for which results in …

The system just had an battery overvoltage alarm! This is the first time this has happened on any system and it’s extremely concerning and dangerous. The Absorption voltage set in the Multiplus is 56.8V, yet the DC voltage reached 58.4V.

Is your fronius up to date as well? Are all components up to date? The firmware is all designed to work together. And yes my fronius is fine on v3.42. was tested in beta first. The usual advice is if it is working don’t update.

Good to hear you have updated and it’s working correctly. I recall updating the Fronius firmware a few months ago but I will check again. Unless there has been another update since then, I was assuming it is up to date. I was updating the firmware on Cerbo and other connected equipment to enable mo…

Most of the time issues with Fronius is because they have not been reconfigured correctly after a firmware change on the Fronius end. Check to make sure you’re running the latest firmware on the Fronius; Please confirm the SunSpec support is correctly configured on the PV-inverter. Log in…

Stolen reply :laughing: Usually if the comms aren’t working correctly, then then system safety is an issue. So yes, the first check is of course is -why aren’t the communications working. Is it networking or protocol related?

Great news. The firmware wasn’t updated on the Fronius GEN24. It took ages to download the latest firmware and after many attempts it finally downloaded to my phone and updated no problem. Then I set the Modbus Data Export to TCP it’s all back to normal. I faintly recall having the firmware downloa…

Out of interest, do you know the working firmware version you now have for the GEN24?

Yes, it is now updated to version ROW 1.33.8-1 (Release October 7, 2024). However, I just noticed something very strange. The system is single-phase but the critical load data is now showing L1 and L2. L2 has zero loads but it appears the system thinks there is second phase. Digging into the PV inv…

Make sure all the sunspec settings are correct as above and post some screenshots of the Fronius settings.

Ok, here are the Fronius settings. Could it be something to do with the Modbus RTU interface settings? [Screenshot_Fronius_Modbus_Settings]

Fronius GEN24 not showing after Cerbo firmware update - DC over-voltage alarm! Ensure firmware is updated on all fronius inverters! - #12 by mpvader - Q&A and troubleshooting

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Fronius GEN24 not showing after Cerbo firmware update - DC over-voltage alarm! Ensure firmware is updated on all fronius inverters!

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