Changing EVCS mode (Automatic → Manual) via VRM fails

Q&A and troubleshooting EVCS
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1

System: Victron Color Control GX, Venus OS v3.55 (EOL device) · EV Charging Station, FW v2.05 · Connection via TP-Link Wi-Fi (RT5370 USB Wi-Fi dongle)

Symptom: Changing the EVCS mode (Automatic → Manual) via VRM fails: “Communication problems”. Reading all data works perfectly (VRM live, device list, Modbus/TCP shows EVCS as connected). Direct operation via the EVCS display works perfectly.

Additionally: Firmware updates for the remaining devices fail with “The installation is already carrying out another request” – the counter was at 1391 attempts and remains frozen across reboots (persists). Two SmartSolar chargers were successfully updated from 3.16 to 3.18. Notifications: no alarms. After rebooting the GX, the warning triangle disappeared, but the 1391 state persists. Updating via VRM and VictronConnect (V6.41, current) is blocked in the same way.

Ruled out so far: network (IPs verified, GX accessible locally and via VRM), passwords/network security profile, Wi-Fi dongle (tested, working), pairing freshly established, power cycles of both devices, individual rather than parallel updates.

2

Hello,

I’m trying again. I’m unable to use the VRM app to switch the EVCS, for example, from Automatic to Manual. I get the message “Communication problems”.
Furthermore, I can’t update the devices because, when I search for available updates, I get this message: “The installation is already processing another request” – the counter showed 1,391 attempts. This figure of 1,391 remains frozen. So my question is: what is the reason for this? Is one issue preventing the other? How can it be fixed?

3

Hi @Evcs ,

We will see what is going wrong in your installation’s connection.

4

Hello Barbara,

Thanks! It seems you made some settings changes during the night. At least, the power was out on my end, and now I can access the update page without any problems. However, I no longer have a connection to the EVCS. I can’t start charging, either via VRM or directly on the EVCS. The CCGX also shows that it isn’t connected. However, I can’t find any errors. It would be great if this could be used again.

Best regards,
Sigi

5

Despite another restart of the system today at 00:26 UTC (the same time as yesterday, not initiated by me), there has only been partial progress: the VRM ‘Control’ section is visible again, but switching from ‘Manual’ to ‘Auto’ still produces the error message ‘Communication problems’. Current status:

VRM ‘Control’ section is visible again
Switching from ‘Manual’ to ‘Auto’ fails with: ‘Communication problems’"

6

Hi there,

I have passed on your bug to the Venus team, as it was not related to VRM. I am sure my colleague will come with a solution :slight_smile: