Latest multi Rs 6000 update changes?

Q&A and troubleshooting
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1

What are all changes for the latest (27 jan. 2026) update for the Multi RS 6000?

Some info is for me not accessible (Victron Professional)

2

v1.27 – 27 January 2026

Changes applying to all RS products (Inverter RS, Multi RS and MPPT RS):

  • Add option to select the polarity of the AUX inputs, this requires an updated version of VictronConnect (v6.30beta7 or newer).

Changes applying to MPPT RS:

  • Restore communication between the MPPT RS and the Multi RS/Inverter RS. This fix makes them pair again, so they can exchange charge parameters as well as make the Multi RS take control of the charge voltage required for feed-in of excess power. This function was broken in firmware v1.22. Note that operation in combination with the VE.Bus Multi (through the GX device) was not affected by this issue.
    In a combined system with the Multi RS and MPPT RS the system was unable to push excess energy from the MPPT RS via the Multi RS into the grid.

Changes applying to the Multi RS and Inverter RS with Solar:

  • Add message “open the PV switch” to the existing PV isolation errors #41 and #42 description on the built-in display.

Changes applying to Multi RS only:

  • Add feed-in control for DC coupled MPPT chargers for the GX (currently in beta test). If your sources (DC coupled MPPT chargers) provide more charge current than the batteries can absorb, the Multi RS can actively push the excess energy into the grid.
  • Fix issue in power response to voltage changes for certain grid codes, this was broken in v1.26 while removing the 5kW feed-in restriction for external AC PV inverters.
  • Fix issue preventing some units to connect to the AC input.
  • When combined with an Energy meter: Fix AC grid set-point in operation mode ‘self consumption from battery only for critical loads’.

Changes applying to 3 phase configurations only:

  • Fix firmware update timeout causing a grid disconnect during an update. Please keep in mind that units on the previous firmware still have the old behaviour so the effect can only be seen once all units are using the latest firmware.
  • Fix issue where one overheating unit would start to feed energy to the grid instead of shutting down.
  • Settings synchronisation does not synchronise the AC input type if ‘switch phases as group’ is disabled.
  • Do not share remote current set-point 0 to other units, each unit can be controlled individually.
  • Synchronise discharge SoC between units when ESS mode ‘Optimized with batterylife’ is used.

Changes to the Continuous output power of the Inverter for DESS applications:

  • The power set-point will be automatically capped to 100A DC which means that 5000W at 52V will work but 5000W at 46V will become 4600W due to the 100A current limit.
  • Please note that if you have another source connected to the AC-Out of the Multi RS which is feeding in (like an AC PV inverter) then the power set-point can be set higher (like 6000W) while the Inverter still only delivers up to 100A DC and rest comes from the other unit.
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3

Is there also a changelog for V1.28?

4

Changelogs can be found in the firmware section on Victron professional:

5

I’m having issues where the excess solar of one multi rs is pushed out to the grid on another multi rs, is this fixed with this firmware?

Some changes sound like they might have an impact, but it’s unclear to me:

  • Add feed-in control for DC coupled MPPT chargers for the GX (currently in beta test). If your sources (DC coupled MPPT chargers) provide more charge current than the batteries can absorb, the Multi RS can actively push the excess energy into the grid.

  • Do not share remote current set-point 0 to other units, each unit can be controlled individually.

  • The power set-point will be automatically capped to 100A DC which means that 5000W at 52V will work but 5000W at 46V will become 4600W due to the 100A current limit.

I can’t test it, since there’s not yet enough sun to cause this behaviour :slight_smile: