I have an ESS system which has developed an intermittent fault, which seems to be getting worse and I am hoping someone might have some insight before I start replacing components! The system has been operating perfectly for 9 years: Quattro 8000 CCGX firmware 3.55 Carlo Gavazzi EM24 energy mete…

@NickJenkey Welcome Nick. 8 years of operation would prompt me to first revisit/redo ALL data and power connections including those into the EM24, swap between the usb ports on the CCGX. Also, did you notice this after a firmware update or change in the system?

@ejrossouw Thanks for the quick reply! I have thoroughly checked the physical layer, all terminals are tight, there is no sign of corrosion on the terminals and the twisted pair cable is undamaged and checks for continuity. The first time it happened I swapped the USB adapter to the other USB port…

You can roll back to the last version which may be worth trying. Below is from my CCGX having installed the latest via beta tests. It could just be that it struggles a bit with the new venus os versions. Disable auto updates to at least have a better control over the system changes. [image]

I will give it a try and roll back to a slightly earlier version, definitely worth a try! I will keep you posted on results, thanks!

I wonder whether this may have something to do with your problem? “The Color Control GX (CCGX) and the CanVU GX are not able to run Venus OS Large.” You may just be pushing such an old device beyond its limits resuting in the occasional comms loss with e.g. the now heavier venus OS.

@ejrossouw Unfortunately not, I am not running the Venus OS large image on the CCGX it is just the standard version, I am aware of the device’s limitations. the instance of Node Red I am using is running on a completely separate system (Raspberry Pi 5) and I am just looking at the data values via M…

@ejrossouw I have rolled back the firmware to V3.5 this morning from an SD card and turned off automatic updates to the CCGX.. We shall see if this has any bearing on the situation, in the other thread I posted this image that shows that when the system drops into passthrough there is a loss of com…

Fingers crossed it is as simple as that. Even on my Cerbo I found occaionally the time does not correctly update. In the absence of a clear pattern / triggers, best to monitor various parameters in vrm to try and establish something.

I installed V3.5 yesterday morning and if anything the issue seemed worse, with more frequent “events” yesterday evening I tried a factory reset with an SD card as described in the CCGX manual. After that and various faffing to get the system back visible on VRM etc there was still no improvement…

Grid meter intermittantly dissapearing from CCGX

Q&A and troubleshooting

NickJenkey (Nick) 31 October 2025 18:06 6

Not done any changes or physical investigation yet but have noticed intermittant loss of data from the meter, I have posted a longer reply in the other thread here:

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Grid meter intermittantly dissapearing from CCGX

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