Problem with stopping energy export to the grid

Today I launched my installation:
Three MultiPlus II 48/8000 inverters configured in a 3-phase setup.
I also have two MPPT BlueSolar 250/100 VE.Can chargers connected to the Cerbo GX II via the VE.Can bus, and two SEPLOS batteries (14.2 kWh total).

Unfortunately, I cannot export power to the grid due to connection limitations.
After turning on the system, I noticed that **even with fully charged batteries, the system started exporting energy to the grid.

At first, the exported values were small (5–30 W), but sometimes — when there was no local load — the chargers inexplicably raised the voltage from FLOAT (54 V) to 57 V, and in that moment the system exported up to 500W to the grid.

My settings:

Grid Setpoint:100 W
System Feed-in Limit: 0 W

Hi if setup as ess it will always feed some back to grid, it needs grid to balance

What are you using as a grid meter, the better/faster meter will help to reduce grid feed in

1 Like

Have your set up on multiphase regulation set to individual phase.
Sometimes, having the grid set point at zero helps.

Also for further explanation see FAQ 6 here.

You’re absolutely right, because in fact the whole system is balanced and doesn’t feed into the grid — I only see negative values on two phases. Unfortunately, I don’t have a meter yet, but I’ve already ordered one and will install it as soon as it arrives. We’ll see if that improves anything. I used to use a Growatt system before, and it didn’t show such values — though they might have occurred as well — that’s why I got concerned.

Unfortunately, I don’t have any meter at the moment, but I’ve already ordered the ET340. As soon as I receive it, I’ll install it and let you know if it improves the situation.

Is the reading shown in the attached image normal? Two phases are showing negative values and one is positive. Overall, the total is positive, but this reading seems strange to me. Is this normal?

Yes this is multiphase regulation

I only worry about about send to grid is this fake measure ?

There is only 0.1kwh to grid in a day, red spike is power from grid

Yes I know :slight_smile: but I must have import to grid to 0 I can’t send any power to grid

Then you cant use ess, even with a high setpoint it will feedback

Power is not unidirectional. Small fluctuations are ok, your meter will average it out.

i have but this don’t work. I wait only for meter for grid ET340 I hope this solve my problem


In your first picture you have feed in excess enabled on ac and dc pv, this should be off with no feed in!

I think you don’t have Victron system :slight_smile:
Show me how can I set when I disabled this option :slight_smile:

I do have a 3 phase vicyron system, see my topic

if you dont want to feed to grid it should be off for ac and dc, no need to fill in a limit then

Grid setpoint is in ess menu, if you want the system to feed in as less as it can make a higher positive number see:

ET 340 meter will not solve your problem, but it will help, a faster meter like EM540 is even better
But as said ess will always feed some back

See also:

In this ess manual:

Thank you I see you have -50W is this mean you send to grid always minimum 50W ?
You have older version of cerbo? Sorry for my answer I starting explore this system and I try to understand all setting’s. In my system this can’t happen because we have a rented connection. Today when battery ending charge something going wrong and send on all phase 1000W I scare little and shut down the grid fuse. I give you information how work this meter which I buy ET340 …

Yes i always feed back a little, even at night
so to consume as little from grid as i can

We are allowed to feedback in NL

I have GX inside multiplus, same as cerbo, just older venus os version

No need to update, victron recommends to never update your firmware as long as it runs ok, unless you need newer options

I understand, system can be complex to get running right :blush: