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Unable to connect with Multiplus via MK3 USB


I am installing a system using Multiplus charger/inverter. I need to configure the Multi. Hence communication between PC (Lenovo Win10) and Multi is required.

I have installed the VE configure III and I have a MK3 USB interface.

When I let the VE Config auto detect nothing happens i.e. the programme is doing a search and eventually times out.

When I try manual connection to e.g. Com3 an error message apperas saying "Cannot open Com3" - it does not help to change Com port no.

I have removed and re-installed the MK3 driver. In device manager I am able to locate the virtual serial port i.e. that part seems to work fine.

I have also tried to use the VE Bus Quick Configure software - and the error is the same

Any good suggestions?

p.s. I have tried on a different Multi and the error message is still the same. I have not tried a different PC yet - not so easy due to remote location

gustav74 asked
gustav74 commented ·

5 Answers

Import Venus GX configuration

Hi everyone,

Is it possible to import a pre-made configuration on a Venus GX device ? To save time at production level.

A question was asked a year ago, and it was, according to @mvader (Victron Energy) on the list (Link), but I can't find anything on my GX that would do the job.

Thanks in advance for your answer.

Best regards,

Danakil asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

FIAMM 12FGL150 and SmartSolar 75/15 Configuration

Hi there,

Sorry for the n00b question.

I bought a new FIAMM 12FGL150 12V 150A battery connected to a SmartSolar 75/15 and a 100W panel. I configured the battery preset to AGM Spiral Cell and nothing else, should I manual configure something else to let SmartSolar work better with my battery?

Thanks for your help


0x001 asked

0 Answers

Color Control GX (CCGX) Won't Turn On

I can't get CCGX to turn on. Help!


1: CCGX is powered from the positive and negative bus bars (confirmed power to end of cable). Red on top and black on bottom.

2: CCGX connected to Multiplus via UTP cable.

3: No power (i.e. CCGX screen is blank).

Remedy steps tried:

1. Unplugged power from CCGX and verified with multimeter.

2. Unplugged UTP cable from both CCGX and Multiplus, then plugged back into both.

3. Reset CCGX (Buttons E + A + B)

Note: CCGX has firmware version 2.04 out of the box. I have not updated.

delt127 asked
Matthias Lange - DE commented ·

3 Answers

Phoenix Multi 12/1600/70 with 15xxxxx firmware


I have a Phoenix Multi 12/1600/70 which has 15xxxxx firmware (1501116.HEX). I know it is old, but it appears to be working well (I don't really want to replace it!) However, I would like to connect to it with ve.config, or any other application which might allow me to configure it and/or see its parameters. I have looked at the various manuals and whitepapers, but remain a little confused!

I would very much appreciate it if someone would answer the following questions:

1. Which RS485/RS232 interface would work? I believe it should be the Mk.2.2b, but I would like to make sure before I purchase one.

2. Which software should I use? I believe ve.configure Version 1 (although I can't seem to find Version 1 for download). Where can I find a download of ve.configure Version 1, or is there any other software which would connect?

3. Which remote panel would work with it?

4. Presently, there is no temperature sensor connected. Presumably, the temperature sensor currently sold for Phoenix chargers, which connects to the -ve pole of the battery, would be the one to go for, but is this correct?

Thanks in anticipation.



johnm asked
Wayne answered ·

3 Answers

Help with Victron 702 Settings Both RV charge controller and Solar used

I recently installed a solar panel on my RV, the Victron was installed last year and seemed to be working fine. Now with the solar it seems the settings are all messed up.

My solar charger has a boost voltage of 14.6 V and my RV Charge controller has an absorption of 13.6.

My batteries are 2x6v 235Ah batteries, I am just trying to figure out what are the best settings when both are used.

I have seen people say set the voltage to 14.1v and the tail current to 4% and set the charge time Higher like 15 min+. Any help would be greatly appreciated.

how does setting the voltage higher then the rv charge controller affect the BMW when the solar is not on but only the charge controller is used?

Thanks everyone

davidk2020 asked

0 Answers

EasySolar MPPT and Multiplus configuration

Dear community, good night

I wanted to know if the MPPT and Multiplus Inverters incuded in an EasySolar bundle can be configurated remotely via the VRM + Color Control GX.

Thanks for your attention.

Best regards,


javier-moran asked
JohnC answered ·

1 Answer

Message erreur


Voilà j'ai un écran de contrôle mppt qui a un message d'erreur fetching history. Après plusieurs recherche je n'ai trouvé aucune solution mise à part le déconnecter du régulateur mais cela ne dure qu'un temps.

Merci de vos réponses

mathieu-0203 asked

0 Answers

BMV 712 - adding a 2nd battery to single battery system

i have a BMV 712 that has been monitoring a 12v 200amp hour battery for the last year - working great. Yesterday i installed a 2nd battery to the system (2 12v in parallel for 400ah). I noticed after firing up the system that over night, the state of charge said 100%. I changed the number of amp hours in the setup for the BMV. Do i have to do anything else?

blentz asked
chriso answered ·

2 Answers

configuration with dip switches, Multiplus setting charging voltages?

Can I change charging voltage using the dip switches on Multiplus 24/3000? Thanks

raymusiclover asked
allan-fraser commented ·

2 Answers

How do I make software changes to my 48/3000/35 Easysolar to accept Ryobi RGN2500B?

I have read Multiplus Genrator FAQ and cannot access 'Disable UPS mode', 'Enable Dynamic Current limiting' or 'Weak AC' through Color Controller to make software changes to accept my 2000W 8.33A generator. It is not recognised at all despite setting Input 1 to generator. I assumed Easysolar came with easy BT or WIFI interface. Do I have to purchase additional hardware to make such changes?

I am running offgrid 240V in New Zealand. I have updated software to latest version by Ethernet through USB connection to my mobile data on Tablet. Since update I have been unable to access internet. My system has been registered on VRM. I don't have access to local Victron support so are configuring myself.

I got a 600Mbps: 5GHz 433Mbps, 2.4GHz 150Mbps that supports 802.11 ac standard wifi dongle but this has not been recognized by system. I have USB connected my phone and have been unable to access any internet or VE Configure settings.

southost asked
Daniël Boekel (Victron Energy Staff) commented ·

4 Answers

How do I open the RVSC file to check battery settings with my config?

I have a Quattro 48/10000/140-2x100, a SmartSolar Charger MPPT 150/100 rev2 . with 2 x 3.5kw Kilowatt Sirius Capacitor Module.

I want to download the configurations and confirm that they are correct.

The download is a RVSC file which I cannot open with the VE connect app or software on my PC.

How do I get the configs into a format that I can share them with Kilowatt to confirm the setting are optimal?

spikedlr asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Is it posible to connect on parallel a Phoenix multiplus 24/3000/70 and a multiplus 24/3000/70?

Is it posible to connect on parallel a Phoenix multiplus 24/3000/70 and a multiplus 24/3000/70?

Abel Ivars asked
Abel Ivars commented ·

1 Answer

7kW Solarinstallation coupled to grid without feeding to it but charging an 40kWh lithium battery


I have bought myself 7200Wp of solar panels. 24 x 300wp facing a bit of south. Incline on the roof at 50degrees.

I also have an 40kWh lithium battery. 50V min 60V max. Max charge and discharge power is 9kW. Max discharge of 18kW for 2hours. The battery will be expand every year until the first place is filled and then I have 100kWh. There is already started on making place for an second battery of another 100kWh. But that is a bit dreamy.

Now the goal is that I put the entire house offgrid, but have the grid as backup and pull in when the battery is flat. I may not feed back to the grid. In summer I think, depending on how much electric distance we drive, we can make it 4 months completely offgrid. In Winter the house will be almost offgrid and the cars will be charging most of the time at night from the grid. Offpeak time electricity is 12% cheaper.

We have a plug in hybrid. Charging is 10kWh in 3 hours or 11kWh in 8 hours. +200kWh a month. And a full EV. Charging every day 10-15KWh in 3-5 hours. +300kWh a month. Sometimes we need fast charging in between runs and then I want to be able to charge 3 phase 16A =11kW, this may be grid charging. The car can handle up to 22kW 3 phase 32A but my grid connection is only 3 phase 25A.

So the configuration needs to be a 3fase configuration with a power output of + 15KW.

What gear do I need?

Thanks in advance



timv asked
dayandnight commented ·

3 Answers

Offline updater for assistants in VE configure 3

I need to run VEconfigure 3 on a laptop that cannot connect to the internet. Is it possible to download the standard assistants from somewhere and then copy them onto this laptop rather then download them directly in the app?

techno74 asked
Matthias Lange - DE answered ·

2 Answers

Two inverters, same device instance

Hello! I have been using a Phoenix Inverter connected to Color Control GX. It has device instance 257. I got a new Multiplus, and it also have device instance 257. How do I go about solving this?

drogos asked
drogos commented ·

0 Answers

Configure Quattro 48/10000 from VRLA to LiFe Battery

Hi All,

Please help.

Config question on Quattro 48/10000 off grid system:

  1. Battery has just been changed from VRLA AGM to LiFe PowerPlus Energy
  2. Do I need to log into inverter through VEConfig 3 and change from VRLA to Lithium voltage parameters, this considering I have already completed the following config changes via Victron Connect:
  3. System has BlueSolar MPPT 150/85tr with VE.Direct bluetooth dongle (have adjusted config to suit Lithium voltage parameters)
  4. System has BVM - (have adjusted config to suit Lithium voltage parameters

With the above in mind, do we need to change battery config internal to inverter also? If so can this only be achieved with a MK2 or MK3 USB - or are the voltage changes we have made in Victron Connect applied to the inverter automatically?

Any advice greatly appreciated!!

tonyjogs asked
Alexandra answered ·

1 Answer

PowerAssist is not engaging, and overloading generator

I have a 3 X Multiplus 5k 48V configured as 3 phase system and 7KW of solar panels and 480 amp hour batteries. I have connected a 6.5 KVA 3 phase generator.

On Veconfig general page

configured 7.5 Amp input current limit per phase and enabled current limiterPower assist.

On invertor page

Enabled Power assist and assistant boost factor 2.0

When The generator is charging and output load is low the current limit controls the maximum generator load well to about 4kW

But when output load starts to increase close to the maximum generation load the PowerAssist does not kick in to assist with invertor load from batteries, instead the generator load starts to increase to above 5KW eventually trips generator breaker.

Can some one help me to identify why PowerAssist does not help when aditional power is required.

ruireis asked
Daniël Boekel (Victron Energy Staff) commented ·

6 Answers

How do I clear an overload alarm from a GX device?

Good day.

When accessing the connected Color Control unit, we found that the inverter had been overloaded.

We were aware of the first instance, when it occurred inadvertently, but it has since happened on several subsequent occasions!

It MIGHT have been due to somewhat overcast conditions(?), but the battery bank was fully charged, and we assumed that the very short usage of whatever equipment, would/could be supported by the battery bank?

However, this is of lesser importance.

The Color Control indicates that "history", in this case the overload occurances, must be cleared on the "unit" itself?? We could not find any way to clear the overload history on the Color Control, NOR on the BMV700?

How should this be done on either of the units?

M.C. Pretorius asked
M.C. Pretorius commented ·

4 Answers

Quattro 120/240 selling to grid in USA: which country code? IEEE1547 compliant?

Hi from a longtime Victron reseller in Colorado. I have a solar home sales opportunity where there are no code inspections--hence little worry that Quattro has no American style UL1741 label.

AC coupling or DC coupling is still undecided but either way I need approval to "sell" excess energy into the "mains". Lawfully grid-tied Victron may be a first for this side of the pond.

The public power company wants compliance with "IEEE Standard 1547 Guide for Distributed Generation Interconnection". Here's a link:

but is that equivalent to any of these grid code standards in VEConfig3?


The mains engineers are more likely to approve the intertie if I can document Victron compliance with IEEE1547.

How about that Victron Energy Staff? Any thoughts or help? Thanks in advance~

abrahamsolar asked
abrahamsolar commented ·

4 Answers

Capacity for 2 6v batteries in serial

I have 2 6v batteries installed in series. The label on the battery shows “105 min @75 amps, 210 Ah @ 20HR”

so will the capacity setting be 210 or 420?

webbug asked
Justin Cook - Bay Marine Supply USA answered ·

1 Answer

Problem writing parameters with Multiplus and VEConfigure3


I've a Multiplus 48/5000/70 with firmware 400. When I connect it with a MK2-USB and the latest version of VEConfigure 3, they retrieve all parameters but if I white new parameters to the inverter, the program stops at init of writing and show me an white error.

If I use an old version of VEConfigure (the version that need the password), is no problem to read/write parameters to the inverter.

The problem is the old version of the firmware?

And, other question: for change the Grid country, i will need a password? What is?


gurybush asked
Paul B answered ·

1 Answer

Easysolar backfeeding into grid


I have an Easysolar 5kVA 48V unit connected to 4 x 220Ah Victron AGM batteries and 12 x 330W PV panels. The system is connected to the RED phase of a 3 phase system feeding a large house. There are no 3 phase loads connected to this supply. At random times the inverter will enter PASSTHRU mode and feed power back into the grid, even though the GRID tab in the VECONFIG file has been set so as to not allow power to be fed from the DC to the GRID. Sometimes it will happen for very short periods but i have seen it going on for up to 30 minutes.

Barry Williams asked
Alex Rodgers answered ·

5 Answers

Do I have to keep connected the color color to the multi when Im doing the configuration for the first time?

I just have one cable utp rj45. Or can I use the utp rj12 for configuration and in that way I dont disconnect the color control.

Thank you!!

lonely-sailor asked
Guy Stewart (Victron Community Manager) answered ·

1 Answer

Multiplus 12/2000 configure with lithium using Mac

I’ve used a pc to update the firmware on the multiples compact 12/2000 to v209. (I could not update it from my Mac because the firmware was so old. So I had to borrow someones PC). Now I can see it with my ViltronConnect on my app on my Mac. When I start it, however, I get a message that states that my firmware needs to be updated from v209 to v4+. It does not update it automatically.

When I go to settings to update the firmware, I need a dealer passcode to do anything.

I’d like to update my firmware and settings - how do i get a passcode to do so?

Next, I have (3) Relion 300ah batteries. I don’t know the settings for the multiplus for these batteries. Do I need an assistant loaded? I am in desperate need of configuration help. I’ve looked at all the manuals and, frankly, they contradict each other or they don't outline the lithium settings by each tab. So I’m stumped.

When I use my toaster oven with the inverter, the “overload’ light comes on. The specs are 1800W max power consumption, and pulls 15amps when at full power. Is that a setting that I need to change on my inverter to allow it to work?

How do i configure the multiplus to use our Honda 2000i generator? Do I need any assistants?

Our boat is on the hard for 4 months this winter. Do I need to change the inverter settings for possible cold weather?


lthomas asked
Matthias Lange - DE edited ·

1 Answer

Configure easysolar

Is there any way to configure my easysolar 48/5000 without to USB?

jakecloss asked
JohnC answered ·

2 Answers

Venus GX: Configuration of static IP

How can I set a static IP address for the Venus GX Ethernet Port using the VRM portal or the local WLAN access (Remote Console)? Whenever I set the IP modus to manual in the Remote Console there is no possibility to input the IP, network mask or gateway.

Thanks in advance,

Stefan (be4energy)

be4energy asked
petajoule answered ·

1 Answer

Feature request / Help: using excess solar power no feed-in

Hi All,

I seem to be unable to configure what I was told the EasySolar could do. It’s possibly my fault, but if not it’ll be a feature request that I think would potentially sell a lot more victron units in Australia.

If one selects “grid code” of “none” it seems I cannot use PV power unless in powerassist mode, UPS (in Ac-in fail) or batteries need charging mode. Ie under normal operation (grid/generator present) PV power will reduce as the batteries charge, and even though I have 1.6kw of panels I’ll see charging of just 20w etc.

ESS cannot be started with a grid code of “none”

ESS cannot be started using the Australian grid code (it warns that a secondary relay is not present in the product)

Selecting UK (and others) will allow the ESS to start and one can then select “use excess PV power to feed into the grid” which then will use all PV power available (Which majority of the time is lower than the load).. but obviously this would be non compliant (and therefore illegal) if running without an anti-islanding relay.

I have also noticed I have to set “keep batteries 100% charged” for it to work, using “optimized” will cycle the batteries.

Setting “power assist” will work sort of... if I set the limit input to 4.5A it will use a couple of hundred watts to power the load, however it will never use less than 700w no matter if I set the input limit to 0.5A... (it just sets itself back to 4.5 in the GX) ... and worse (for my situation) should the load go over the available PV power it’ll discharge the batteries.

So nothing does what I want to do.

I want to use the easy solar as a UPS and have the PV power reduce grid power. Ie:

I have “cranker batteries” (24v 200Ah flooded flat lead plate) so they should be just used when there is a grid failure. Grid is stable for most of the year but I have a lot of computers hence needing/wanting to use “UPS” mode. I do not want to feed any power into the grid,.. just downstream to the loads. If there is excess PV power after the batteries are charge and the grid consumption hits zero just reduce the output of the MTTP charger. (This is got local regulations compliance... domestic premesies are not allowed to feed in more than 6kw of power.. which I wouldn’t anyhow, but as a consequence no installer will install greater than 6kw without an upstream limiter and non seem to want to do Victron stuff.. so I’m installing them (EasySolars) as UPSs for each power rail in my mini DC.. i’ll End up with >6 of them and 18kw of panels if they can actually do the job I need.)

Thoughts/direction welcome.

misullivan asked
JohnC commented ·

1 Answer


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