I have a 5kV Multiplus II, and 5kW Fronius AC coupled system. Everything works fine, (charging, discharging, throttling, transfer to battery after grid failure etc), except both the Victron VRM, and Cerbo GX Grid and AC loads bare little resemblance to the correct values.
I have tried both the CT and the internal multiplus reading and it does not seem to make a difference.
Obviously i have set something up wrong, but for the life of me i can’t work it out.
Any ideas?
Check the VEconfig “use external current sensor” is ticked if using one, obviously unticked if not.
Check the connections of the external current sensor or shunt if using the internal one.
Maybe update the firmware.
Or it could be something to do with the Fronius but there I have no ideas.
Thanks for the suggestions. It wasn’t any of these as it turned out. I had failed to set the correct postion of the Fronius inverter on the Cerbo.
On the Venus 3.5 it is under
PV Inverters - Inverters - AC-Out L1 - Position.
I had mistakenly set it up as on the AC Input.
Glad it’s sorted, and for the updated info.
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