I have a 3600 isolation transformer. Recently one of the jumpers on the AC input started overheating to the point of smoking. This is the jumper between J17 and J20 used for 115 V input. The transformer feeds through a Victron inverter/charger to my AC panel. I have had this setup for several years with no problems but with usually small AC loads, Just installed an air conditioner that draws 10-12 amps running. Ran this setup for a few days at the yard before moving to a marina. Ran fine plugged into 30 amp 115V shore power at the yard and I didn't notice any problems. Moved to the marina also connected to a 30 amp 115V outlet. Noticed two things. One, the air con has trouble starting and the inverter kicks in to boost the shore power when the compressor first tries to start. Then after the air con had run a while I started smelling smoke. Shut down all power and checked all the wiring AC and DC and could find nothing even warm. Restarted everything and smelled smoke again and finally traced it to the isolation transformer. Open the case and found the jumper smoking and very hot. My guess is there's a problem with the shore power at this marina but would welcome any comments or suggestions.

I am considering changing 24V to 48V multiplus, but considering the Multiplus II. Is this compatible with the blue nova LifeP04 lithium batteries?

Also, is it compatible with the blue solar charger controller?

Hi,

I have been trying for a while now, and I never managed to make my system compensate the voltage drop in the DC part of my system.

System is composed of:

2x MPPT 250/60 ver. 1.37

Venus device, ver. 2.23

Multiplus 3000/24/70 ver. 423

Battery bank 24V 14kwh OPzS

Section cables of 35 and 50mm2, lenghts of around 5m on MPPT to battery, 2m between battery and Inverter.

2 fuses involved along the way

Voltage drop needed to compensate in high currents: around 0.3 to 0.7V, at most.

Without DVCC, I see correct voltages monitored in both the MPPTs and the Multiplus. The Multiplus is closer to battery and with the Voltage Sensor correctly connected (confimed with multimeter).

In absorption stage, there is some voltage missing to be optimal value, and slowly rises when current drops. Only in final moments before going to float I see the voltage reach the expected 28.8V + temperature compensation.

So, I enabled DVCC + SVS, and what I see is that instead of the MPPTs rising a little the output voltage, nothing changes on system, and he only difference is that now the Multiplus reports the voltage of the MPPT instead of its own!!! Battery monitor selected is the Multiplus!

Yesterday, I switched off DVCC and added temporarily the Smart Battery Sensor, just to test. The system started to respond as expected and the MPPT immediately raised their output voltage in order to have true 28.8 + temperature compensation on the battery terminals. But I would rather use DVCC, since I have Venus device.

Any ideas of what is going on?

Thanks and regards

Hello,

Our previous system setup was the following:

• Color Control GX
• Quattro 48/5000/70
• Pro 2.5-10.0 battery box with 2 Lithium Ion Battery Cells
• BlueSolar charge controller MPPT 150/85

As BYD batteries require using a Ve.Can port of Color Control GX, we were not able to communicate MPPT with our system and charge batteries with solar panels.

We have bought a new Venus GX and have replaced the Color Control GX.

MPPT was connected to the Venus GX using its 2nd Ve.Can port.

MPPT turns on in Bulk mode, batteries are charging but Venus does not detect MPPT, it shows the system inverting (system is currently off-grid) while batteries are actually charging.

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How could we solve this problem?

Thanks in advance.

Good day Matthijs.

I still have a problem with CCGX, getting it to communicate with Multiplus.

CCGX bought around 2014/15, but not installed/connected. Now wanting to add to system, running a BMV700.

CCGX does not "boot"?

What to do?

After a low battery reboot the CCGX is stuck on the boot screen "Victon". I've tried soft rebooting (page and menu buttons at the same time) and the screen goes black then white then back to the boot screen.

I tried disconnecting D.C. power to the CCGX and when it boots it is still stuck on the splash screen.

I disconnected solar, ac, and batteries for 1 minute plus and when it boots it is still stuck on theboot splash screen.

Any suggestions?

I have the EasySolar 48/3000/35-50 mppt150/70 with 4 12.8V Lithium (LiFePO4) batteries connected in series. All works fine, but the CCGX don't display SOC. I guess this might be firmware related, but I'm new to Victron products. The multiplus inside the EasySolar has firmware version 413, the MPTT runs on v1.39 and the CCGX on 2.23. Should I update the Multiplus? Greatful for any guidance here, thx :)

Hi There,

This might be quite elementary to solve, however I keep getting high voltage alarms from the Pylontech battery at times of high solar yield.

What can be done to solve the problem. The alarms tend to show up at voltages below the recommended charge voltage settings, ie max voltage for absorption charging 53.2V and Float 53V in accordance with the manual.

I have downloaded logs for some of the alarm events, these can be found at the following link.

https://drive.google.com/open?id=19c45KZUPvGrVP4q_MgFSeSdjDPtzZu3r

Where could the alarm be triggered and why, and how could the setup/settings be changed to avoid or reduce the alarm event. At present it is a once a week occurrence.

Best Regards

Riaan

Hi just some info for everyone incase you did not know about it, as I myself found this mentioned on a post and I was not aware of the feature.

If you enable two way comms on the Venus or the CCGX,

then you can remotly configure the units via the VRM

Nice Feature

https://www.victronenergy.com/live/vrm_portal:remote-veconfigure

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Dear friends,

I have experienced a problem with a customer's ESS system. Multiplus and Fronius inverters are connected in parallel to the grid. There is a TOPzS batteries installed. ET112 meter and BMV700 is installed too.

My customer told me he noticed 2 power outages. I think the problem comes from the BMV monitor, but a problem from the grid meter has more sense as I have read in FAQ4 from ESS manual. I attached pictures from the VRM portal:

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The previous night of a power outage, I found some error from the BMV monitor:

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And this 25th april when I enter in the VRM portal, It showed an error message in a red window, it says something like "a device is trying to send data". I had to restore the token authorization in order to solve the problem But before restoring the token, I noticed this:

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I called my Victron Seller in order to request them to write to level3support mail. But I have no news and no technical explanations.

Please, could you help me? If you need more information, please let me know.

Best regards,

Daniel.

I have two mppt charge controllers (100|50) who charge a battery. I would like to connect these charge controllers (with each a VE terminal) to the my inverter multiplus compact 24v|2000. This inverter has just one UTP terminal left. How can I both charge controllers connect with the inverter?

We had our system checked and the VE engineer set the ABS to 14.70 and the Float to 13.8.

However, the batteries have been charging at 15.75v and they're now cooked. How could this happen? He has sent me a screenshot to show the settings so I don't think he's done anything wrong. The batteries are: VE AGM supercycle 125a x 6.

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My MultiPlus II 48/3000 is still on backorder and I am busy preparing the mounting area. What is the measurement of the bracket bolts position to the top or bottom of the unit when mounted? I know the unit itself is 499x268x141mm.

Hey guys,

I have a RPI3B+ with CCGX with 2.23~6 connected to 100/50 mppt, bmw-712 and a Phoniex Inverter 12v 1200VA. All updated to the latest firmware and connected via V.E. USB. I read victron’s page on the consumption but it was no help.

Can anyone help with this issue?

Also how can I show the AC loads on the CCGX screen?

3 x multipus 24/3000 in parallel

Issue if I set the input current limit to say 20 amps. and then apply loads of say 18 amps then the input current exceeds this buy the battery charger setting power.

I then have to limit the battery current way down to say 6 amps per unit at 24 volts so that I can stay under the 20 amp current limit. while running other loads

I would have thought that the charging would have been reduced first to zero rather then exceeds the max current limit set when other loads are used.

also if I raise the max charge rate to 70 per inverter then the amps drawn goes way over the 20 amp limit eve with no loads.

have tried this with the DMC and the CCGX and by checking that the changes have been applied correctly to each inverter with ve config and they have been

firmware version 459

any ideas out there, pain in the backside changing the battery current limit setting all the time

The site has 3 multiplus units all on 459 firmware all in parallel

the site works fine using the DCM or the CCGX NOW but connect both and the DMC works fine but the CCGX keeps dropping out and then back on then out again

by this I mean it shows the correct infor then the info drops out and the display says OFF, however the DMC still stays working and so does do the inverters

I have tried new cables and changed them ALL to Cat 6 Cables with plastic plug ends

History

1. first of all I installed the CCGX to the site with the DCM connected and all worked well. this had a 20 mtr cat 5 cable from the inverters to the ccgx then a 1 mtr to the DMC the CCGX on 2.23 FW

2. then I changed the inverters battery cable lengths so they where all identical

3. I then upgraded the firmware from 419 to 459

After the above had been done

The CCGX would not connect AT all and I also could not get a connection with the MK3 but the MK2 would work.

I then ran a temp new victron cat 5 - 10 mtr cable and the CCGX would then work but connect the DCM and the CCGX would go off line, use a 5 mtr cable and all worked fine, but this is way to short and I cant leave it like that on the boat.

I then had the original cable shortened to the Min length I could get about 9 mtrs, and the inverter interconnects also replaced with cat 6 and shortened it min lengths posable.

in the end to even get the CCGX to work on and off on off etc I shortened the ve bus internect cables and this then allowed the CCGX to work abate not to well, I even tried putting it up to the release candidate firmware as well

Now the CCGX works in and out when the DMC is connected but fine on its own.

*******

My suspicions are that the VE bus signal from the inverters has decreased in output power somehow, with the firmware upgrade.

the site is available via VRM if needed its setup as B2 on my site list plus the DMC is not currently connected so the CCGX and the VRM are working fine.

Note the CCGX is using the victron wifi dongle

Any one got any fancy ideas or tips

I just purchased a new Samsung a8 and am unable to connect to my 75/15 mppt controller and Bluetooth smart dongle. The dongle is not visible in the Victon connect app device list and does not appear when searching for Bluetooth devices

I can still connect using my old Samsung S5 phone and using my partners Samsung a5. I have updated the mppt and phone to the latest firmware but this did not solve the problem. the Samsung a8 connects to all of my other bluetooth devices such as my laptop, bluetooth speaker and other phone.

Any help would be appreciated

I am planning on installing 12 x 270W panels with 4 panels connected in series creating 3 strings that will be connected in parallel. I will have shade in the morning (winter) on the one string. The charge controller I will be using is the MPPT 250/100 (to allow for expansion). My questions are:

1. Each string will be producing different amount of power as one string will be in the shade and the other two in full sun. Does the controller handle this?
2. How many individual strings can be connected to this controller (assuming I am not exceeding the volts or amps of the controller?
3. What is the difference between the Tr and MC4? I assume the connections? The MC4 seems to allow for 3 separate connections, so is it limited to 3 strings?

I have had a Multigrid 48V 3kVa working flawlessly in an ESS system with a BYD battery for about 12 months.

A couple of days ago there was a power outage that lasted for over 6 hours.

The system stayed up during that time. When the mains grid power came back. The system switched over from inverter mode to pass through mode and stopped the discharging of the battery.

Why might this be?

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