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L1/L2 probably swapped?

Hey everyone,

My question has been discussed several times, but as I am not the one who installed the Victron etc. and the electrician who did doesn't know Victron well either, I'd like to get your feedback so I can tell him what needs to be changed (he's coming back in a few days for some last things so a great chance to fix this).

What I wanted my installation to look like was the following:

  • L1 for "critical loads" using a Multiplus 2 48/5000, attached to the battery (Pylontech)
  • L2/L3 remain connected to the grid
  • EM24 for energy metering

The installation works fine, no problems.

However, the results I see in the pictures below doesn't seem right.

The "victron feed" image, on a high level, states I believe:

  • MPPT generates 3710 W
  • of which 3083 W are fed into the grid
  • the Multiplus routes 3200W on L1
  • while L1 consumes 506 W from and L3 26 W

I think AC Loads with the 3200 W is correct, but Grid with -3140W should be on L1 as that is the Multiplus connection, and not L2 which is connected directly to the Grid?

So L1 and L2 are swapped - maybe from grid to EM24 or EM24 to Multiplus?

The "victron consume" image states, I believe, that 311W + 113W = 424W are used directly from battery an MPPT for the critical loads, and 24W are on L3.

But if L1/L2 are actually swapped, then in a fixed setup I would actually see

  • 30W (not 4W) on L1 from the grid --> 30 W difference to AC loads, so maybe that's the Multiplus?
  • 4W (not 30W) on L2 - no idea where the 27W difference (31W-4W) on L2 AC Loads comes from though?





michaelanders asked
Alexandra commented ·

0 Answers

Ac-Loads 0 Watt // AC-Load Values wrong




set up:

- 3x MP2/5000 - ESS - 3 Phase
- 1x EM24 RS485
- 1x RS450/200
- 16s 280Ah LF

 Sometimes the values displayed in the VRM portal are not correct or the control strategy does not make sense. For example, a consumption of 0 watts is displayed, although power is drawn. Sometimes the battery is also discharged, although there is enough PV. In the attachment 2 examples. Does anyone know the problem? The trick with the headphone input can no longer be done with the new devices.

andy22 asked
andy22 edited ·

0 Answers

Cerbo GX and Carlo Gavazzi EM24 with CTs communication issue


I am experiencing a problem with my carlo gavazzi EM24 three phase (CTs) and a cerbo gx, that setup used to work for a year but now I cannot get any grid readings from the cerbo gx (remote console) when the 3 CTs are installed. The meter itself has kWh readings but the cerbo gx does not register anything.

Under energy meters the cerbo gx still picks up the serial number of the EM24 but on the cerbo gx dashboard I have no readings.

Modbus TCP is enabled, Modbus TCP devices ip is still the same.

On the EM24 the rs485 is connected as pin 43 Black, pin 42 Orange and pin 41 Yellow and usb is plugged to the cerbo gx usb port, I have also replaced the old existing rs485 to usb cable to a brand new one but I still do not get any readings on the cerbo gx and finally I tried to update the cerbo gx firmware, "error during checking".

Has anybody ever encountered this issue?

bertcy asked

0 Answers

VRM shows 0W PV Power, Grid shows only Critical Load not whole house consumption


In November 2022, VRM started showing ‘AC Loads’ as 0W and ‘Total Consumption’ & ‘Grid’ displayed only the Critical Load, rather than the figures for the whole house.

My Solar PV was fitted 5 years ago by a Victron dealer who has since gone bust and now the only Victron agent in Kent wants £780 to look at it. He told me to update the CCGX firmware from v1.74 to version v2.92 which I did (with trepidation) but I think this has made my situation worse.

Until this week, I knew nothing of PV systems, so please allow a little latitude while I try & explain;-


I believe i have a HUB 4 system, now known as ESS. It comprises: CCGX, MultiPlus Compact 12/1200/50-16, 3 x Lead Acid batteries, 2 x Solis PV Invertors and an EM24 energy meter. The EM24 is linked to the CCGX via Cat5 cable, but I think it is a serial model with an RS485 to USB interface hidden behind the CCGX.

The CCGX Settings (firmware v1.74) contained ‘Wired AC sensors’ and the EM24 appeared as “BQ21600350013” where it was set to ‘Grid meter + PV inverter’.


In firmware v2.92 there is no ‘Wired AC sensors’, but the EM24 appears under ‘Energy Meters’ but can only be set to ‘Grid meter OR ‘PV inverter’ (not both). The Phase type ‘Single Phase’ and ‘PV inverter on phase 2’ with ‘AC Input 1’ have been carried over from the previous firmware.


Whatever I do, I cannot get the EM24 to appear in the CCGX ‘Device List’. I think it is Modbus RTU (different to’ Modbus TCP’) but in desperation I enabled ‘Modbus TCP’ in ‘Services’ and scanned but of course nothing was found. Help! I am really out of my depth.



All I know is that VRM displayed accurate Grid and Solar figures up until November last year and no hardware has been changed. The EM24 local display is still showing the Grid on L1 and the PV Invertors on L2 so my theory is that an automatic CCGX update to v1.74 lost the connection with the energy meter and upgrading to v2.92 has not helped.



I have found that Victron now say “using an EM24 to measure both Grid and Solar PV on a single-phase installation does not work properly”, and they recommend using an ET340 instead. Is that because the firmware does not support the EM24 anymore? If so, what version of firmware will I need to downgrade to, in order to restore VRM back to reading correct Grid and Solar figures?

Lastly, am I doing any harm running the system without a Grid/Solar meter? I know it is still saving me energy because on a recent bright day, my smart meter was showing 0 watts and the EM24 had a negative figure on L1), I don’t think the solar battery was charging.


editbear asked
editbear edited ·

0 Answers

EM24 - no data "Energy to net"

First I thought there is a problem with my connection to HomeAssistant when I was not able to receive data for "Energy to net" over modbus.

But in VRM I was also not able to see this data.

I am using the EM24 Ethernet meter. Here are screenshots from VRM. All screens showing December.



From Dash I can see:


As you can see, there was power delivered to the net and VRM recognized it. But in VRM and locally on GX, the gridmeter entries just show zero.

It is a newly installed system, so I may did soemthing wrong in configuration of the EM24? It is running the application "H", which is for my understanding the correct setting.

I used a shelly 3EM before the EM24 was delivered. With that device everything worked fine.

I hope somebody can help :)

dasdan asked

0 Answers

Recording the power consumption of different devices using the EM24 / Cerbo GX

Hi everybody,

in the near future I will uprade my existing installation with a battery and victron components.
The system will look like this:
Energy-Meter: Victron EM24 (replaces the exisiting Sunny-Home-Manager 2.0)
System-Controller: Victron Cerbo GX
Battery Inverter: Victron Multiplus 2 48/5000
PV-Inverter: SMA Tripower 15000

Now the question:
Is it possible with this Victron-setup to record the power consumption of single devices (e.g. heat-pump)?
At the moment I'm doing this with the Sunny-Home-Manager, which reads the S0-Signal of a standard DIN-Rail-meter using the Smart-Appliance-Enabler running on a Raspberry PI.
All the data is shown in the SMA Sunny-Portal.

I havent't read anything about reading the S0-Signal with an EM24 or the Cerbo GX.
For sure another option would be to install an additional energy-meter (ET340) just for the heat-pump.
But this would be an expensive solution.
Has anybody another idea how to realize that?

mb4331 asked

0 Answers

Siemens PAC2200 as Grid Meter


i've got a Siemens PAC2200 as a Grid Meter ...

The Setpoint for the Multiplus 2 is controlled by a PLC via Modbus Register 37 ... that works perfectly.

But now, i want show the grid in the remote control panel of the cerbo.

That is not working out of the box with the PAC2200

i found some threads like this ( with eastron SDM630 )


my Idea is, to simulate the EM24 with my PLC / Node red or what ever as a Modbus Master

my question is, which registers need the cerbo to work proberly, that the cerbo thinks it is an em24 ?



stricky asked
niels commented ·

0 Answers

PV input visualisation in VR

we have here a farm with 9KW peak solar distributed on several barns, it is 6 micro inverters from 4 different manufacturers, partly over 500 meters apart,

it is a 3 phase ESS built, to integrate the whole inverter into the VRM would be yes 6 individual ET112 and cable /zigbee connections Nötig.

Would it be possible, (the whole house incl inverters, hangs on ACout1 of the Multis)?

Would it be possible to connect an Em24/ET340 AFTER the multis and configure it as a solar inverter,

Would then only the "minus current" (from the house to the multi) be counted and visualized in the VRM? I know that this way would not take into account the current that is consumed directly in the house.

But any "economical" solution to visualize the PV surplus would not be bad.

Translated with www.DeepL.com/Translator (free version)

finalshare asked
finalshare edited ·

0 Answers

the em 24 doesn't seem to work

Dear, I have 3 multiplus2 as 3 phase system with a digital em24 connected via usb to the gx color device but the digital meter does not work. the em 24 is my grid meter and is also set that way. on the gx color I see no consumption and yet I consume 1 kw. The multiplus is connected parallel with the I do see a consumption of a few watts but that is what the multiplus measures I think because it remains on charge because the grid meter does not work.do I have to set something on the em24 ?IMG20220825074720.jpgIMG20220825074737.jpgIMG20220825074812.jpgIMG20220825080051.jpg

mathybloemen asked

0 Answers

EM24 as Energymeter for two Mikroinverter

Hi, I have two balkony power stations (two microinvertes with two panels connected to each microinverter).
I am planning a bigger pv system and for now I would like to track my power consumbtion.
So now I would like to start with two EM24.
One for tracking the powerconsumption of the whole house and a second one to measure the power delivert by my balcony power stations.

Both should be connected to CERBO GX with a RS485 to USB interface cable each.

The connection of the main EM24 is clear to me.

According the EM24 for measuring the power delivery of my balkony power station:
Can I use that EM24 as a 3 pahse system and connect one microinverte to L1 and the other microinverter to L2 for example?
Or can I use the EM24 for that case only as a one phase system with a bridge connected from clamp 1 to 4.

Here a shematic of my thoughts. Dose that work?


It would be very nice, if you can bring some light to my mind in that topic.

Thanks, Marco

marob asked

0 Answers

EM24 connection to split phase Grid AC

I have an EM24 AV6, which I understand I Can use for split phase as well as 3 phase. I'm using it for split phase. I have two measurement clamps that came with it. Do I put each clamp on each leg of my split phase 220/230 Main Grid AC feeder before the service panel? Or just one?


duswami asked
duswami edited ·

0 Answers

Carlo Gavazzi ESS showing and working on wrong Position


last week I finished my 14 th Installation and the 5th with Calo Gavazzi EM24 Ethernet Meters. So far so good, everything is working fine, but on this last installation something is wrong.

I do have 2 PV Inverters.

the first is connected on AC Input1 on a 3 Phase MultiPlus II (2623) 5K

the second is connected on AC Out..

they show up on the detail Menu List, with all their settings, but on the Dashboard and in reality they show up and behave like connected on AC out only...





Both PV is Producing 15 KW ... and the system is dumping all the 1St PV to the Grid -->


I do have one uncertainty ... In the Multiplus ESS Configuration I set the System PV to 15 KWP ... is this wrong? .. -- do I only have to set about 10 kWP on AC out to the PV Size? (There was a reasen for that, because the customer first had both PV connected on AC OUT, and changed wireing the day after Installation due to my Factor 1 Rule complaint. So I do have to visit him, to reconfigure the ESS Assistant as well.)

Is this a configuration Problem, or an ESS Configuration made by me.

Please Give me some Info..

Thanks a Lot


Bernhard Matschinger asked
Bernhard Matschinger commented ·

0 Answers

EM24 Power factor disable

Anyone know how to disable power factor on Carlo Gavazzi EM24?

We have built a few energy meters for metering properties for quoting purposes but power factor is causing problem as we do not need it for the size systems we need to meter.


mauromartini asked

0 Answers

EM24 with Backlight


is there a special version of the EM24 (RS-485) Energy Meter with backlight available? The one I got here unfortunatly dosn't seem to have backlight. Maybe CG has a special version with backlight compatible with victron?


steffenp asked

0 Answers

Incorrect energy display in VRM portal - MultiPlus II with EM24

I currently have the following phenomenon:

In the VRM Portal the displayed sum value of the energy meter jumps between a few watts, the current power of a phase and the correct total power (see image 1).

Via the remote console, the correct value is always displayed (in the system schema as well as on the overview page).

System setup:

1 MultiPlus II GX FW: 2.72

Connection mains parallel to AC1

Energy meter EM24 Ethernet FW1.6.48 - use phase balancing 3P.n

- AC coupled PV system with power feed-in

- ESS with external meter


1) example Remote Display & VRM Dashboard with different energy sum


2) example VRM Dashboard correct sum energy


3) example VRM energy meter log

chris-zell asked

0 Answers

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