Have a 100/30 hooked up to two 175W panels. Been using it fine for about a month now. Out of the blue, it has stopped working. It charged the batteries up to 92% and then output 0W (sometimes 2-3). I unplugged everything and replugged it back in and it worked as normal again for a few hours (edit: got me up to 96%). Then back to 0W (still reading a nominal amount of V both from the battery and from the panels). I unplugged and replugged again, this time it worked for a few minutes. But then stopped. I repeated the process and now it's not charging at all.

I have checked all the connections with a multimeter and everything appears tip top. One thing I noticed is the voltage reading from the battery terminals of the controller do not match the voltage reading from the batteries themselves.

I also wondered if it was my battery monitor being wrong, but when I turn appliances on, the charger still refuses to output any wattage. Is my unit defective? Or is there something else I should try that I'm missing?

I've had a BMV-712 Smart for about 2 months. Now there is no display and the app will not recognize the unit anymore. The power has been checked and is working and the other connector has been removed and reinstalled on both ends. Any ideas?

I have 2 12v 160W solar panels wired in parallel. They are wired to my batteries and a MPPT 100/50 SmartSolar Charge controller. The system has been working fine for the last two weeks since I set it up. Yesterday, however, I came out to find that the victron connect app is showing no wattage or voltage coming into the charge controller from the panels. I have measured the current coming in from the solar panels and there is no problem there. They are showing the voltage i expect. The polarity is correct from the battery connection as well as the solar panels to the charge controller and has never been connected wrong. My charge controller is showing no error code on the led light. The bulk led is flashing once every 3 seconds.

Did my charge controller go bad?

I updated the Venus Gx to the latest software, 2.31. Now, when I connect to it via the build-in WiFi, it keeps kicking me out. Every few seconds I have to reconnect. Any ideas?

Question: I’m running an ESS setup with ACcoupled PV with feed-in allowed. First I was using only a mppt but for some reasons I temporarily disconnected it and only using ACcoupled PV on ac-out.

Battery setting is optimized with batterylife(because of passive balanced lithium). Al worked well, but now there is only ACcoupled PV available the systems thinks there is no incoming power and it raises the active state of charge limit so it won’t discharge anymore while there is sufficient charge current available each day.

For now I set it to optimized without batterylife but that’s not the way to go. What is going wrong here?

Setup:

Multigrid-2 48/3000/35

ACcoupled PV 440Wp on AC-out

Bmv700

RPI with Venus

8kWh LiFePo4, passive balanced

MPPT150/35(not used, but connected)

My problem today is with a Battery Protect: BP 12/24 / 220. Installed on a barge.

I returned this year to the boat and there was no 12/24 service. The 220v was fine. A man that works mostly with MasterVolt mentioned he had seen this before and a temporary solution was to connect the 2 cables coming to the BP together. He used the “In” post on the BP but I assume that just bolting the 2 cables together would also give desired results. Obviously the BP is not protecting.

A little back and forth with the man that installed this (400 km away) I was sent a new BP. I can not get the unit to program. So with a fresh re-read of the instructions let me tell you what I have done that does not work.

Connected the 2 cables to the Out and In posts

Removed the remote plug

With a wire I connect the Program slot to the Ground slot.

I want to use the “4” setting and allow unit to cycle and remove the jumper wire.

I get an “E4” error each time I try.

I was told the above must be done when the battery readings are below 27.6v (less than the “4” setting).

The above is also what I was told to do but reading the instructions makes for some questions.

Questions:

Should both the Out and In cables be connected to BP when I re-program?

Must I set the voltage “d” before I set the under voltage Shutdown and Restart? I don’t recall seeing “d” flash by. How do I get it to display to select?

I have a Venus GX, an Apple 7 and Victron Connect app on the phone. Can I program the BP using the phone?

From other post here I offer this information: I have an inverter and run 220v on the boat. Do I need a BP?

Reviewing info from Victron Connect app, I see that there was a time, I don’t know when, that the 2 sets of batteries (engine and boat) show a minimum voltage of 6.5 and 4.15.

I have a nice Victron set-up on the barge. I am electric independent, never needing to plug in. If I can get this solved and another issue I will sleep better. Appreciate any guidance. Will be a lurker here.

Hello,

Does using the Multiplus II optional current transformer remove the need for an energy meter when PV is connected on the input side of the Multiplus?

Hello.

I have a Victron Quattro, CCGX panel, VE Bus to NMEA cable and a VE CAN to NMEA cable.

These 4 items are all connected as per Diagram 1.1 here:
https://www.victronenergy.com/live/ve.can:nmea-2000:start

Data from the Quattro reports fine on the CCGX (NMEA bus OK) - However I am unable to change the Quattro’s mode (On/Off/Charger Only).
The CCGX screen shows the mode change, but nothing actually changes on the Quattro.

Further down on the page link above I did notice that the VE CAN is stated as being “read only”
CCGX does not send any information to the N2K network.

Does this mean the CCGX it will not send out the required data to request the Quattro change mode?

I must add that what I am ultimately trying to achieve with this equipment......

1) I want to have the ability to control the Quattro ON/OFF from the CCGX panel.

-I do not need (or want to) to send any commands from our systems NMEA network to control the Quattro.

2) I would like our vessels NMEA network to be able to monitor the running state of the Quattro.

Best Regards
KR

I have a Quattro that is charging a large 24v lithium battery set up with the two signal BMS support assistant to control the BMS charging. I can't seem to get the quattro to prioritise the inverter to consume the battery power, in fact the only way I can stop it taking energy from the grid or solar inverter is to isolate the mains input. Do i have to have a Venus GX or Colour Control to set this up?

Any help would be appreciated.

Hi, we have an off-grid installation and have ordered 2 units of B-Box 10.5 LV batteries. After orderind we saw Victron blogs with next info:

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Is that mean that the only way is to change the batteries for example to B-Box Pro? We plan to use it with Fronius Symo 15.0 + solar panels + Quattro 10000 (3 units) in 3 phase system.

Now we have next situation: when we turn on the B-Box L without any consumers it wors ok, after that we connect color control GX and it found the B-BoxL and show all the spec. But when we turned on th B Box L alredy with connected CCGX the battery goes into error.

So the question should we change the batteries? And why the similar B-Box pro is ok for off-grid and B-Box L is not suited?

Thank you!

Hello Victron community,

I'm about to end my camper van conversion, and it's time to set up my electrical devices !

My system is the following : a multiplus 12/800 inverter/charger + a li-ion 160Ah battery + SmartSolar 100/30 + BMV 700 + VE.BUS BMS + DigitalMulti Control.

I read in the VE.BUS BMS manual that I needed to install the AC detector in order to restart the Multiplus. So I did, but it seems that I have now to set up correctly the multiplus with the "VE.Bus BMS assistant or the Self-consumption Hub-2 v2 assistant".

My question is : What is this assistant, and how to load into my multiplus ? Do I need the MK3-USB interface ? It's not so clear in the manual... I currently set up the Multiplus with the DIP switch only.

Thanks for helping

I have an "old" BMV 600, it constantly reads about 0,20V lower than any other testing device I use to check the voltage on the same conectors. This gives me problems detecting "full charge".

Is there a way to set an offset to calibrate the voltage of the BMV600? Or is there any other way to calibrate the voltage?

Obviously, setting a lower level of full charge will get me to 100%, but I’d prefer an accurate voltage displayed if possible as I have Lithium batteries.

Thanks!

I have two Quattro 24/8000 units are setup in parallel , I am having a issue with Power Assist, in as much as the setting that I set the support at is not what happens in the real world

Ie I set the Power assita support level at Say 80 amps and the support then occurs at 57 amps

This diferance happens on AC 1 in and AC2 in settings

Quattro FW 459

CCGX FW 2.32~2

VRM access is available if needed on request

Everything seems to operate correctly though but the power ASSIST amps reading is out by a lot

AC1 is Mains

AC2 is generator

Now to get the Power assist to work on AC1 correctly on a 63 amp breaker I have had to set the amps at 80 on THE ccgx THEN the breaker amp reading is 57 amps

What should I do so that I can have the correct AC amp readings readings .

This site is on the VRM if you want to check anything

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Charging the batteries with the generator, used to take about 2 hrs when batteries were drained... Now it charges 20 - 25 min and the yellow light starts blinking.. Indicating the batteries are fully charged.. What is the solution to the problem?

I need a way to provide accurate battery voltage to my Smart Solar MPPT (it is off by as much as 0.3-0.5 volts). Based on the victronconnect live manual, and my MPPT part number (SCC010085210), VE.Smart Networking is not supported. However, the same manual states that the new VE.Direct Bluetooth Smart dongle (part number ASS030536011) is compatible with VE.Smart Networking.

A couple other details. I need to be able to still control the MPPT via victronconnect. This leads to two additional questions:

1. Will I still be able to configure/enable/disable the MPPT via my phone if it is connected to the VE.Direct Bluetooth Smart Dongle? I ask because of this note here that says I will lose bluetooth from the MPPT if VE.Direct is in use.

2. Can the dongle communicate with the "Smart" network (the smart battery sense specifically) AND also communicate with my phone via bluetooth? I ask that because the documentation says "Only one phone or tablet can be connected to a dongle at the same time. Make sure no other devices are connected to the dongle, and try again." This is stated both in the dongle live manual and in the victron live manual.

I have a Multiplus single phase with a Fronius primo on ac out 1. I want to see the power going to Ac out 1 loads and ac out 2 loads separate. And hopefully logged on VRM portal.

My BMV712 keeps loosing the values for soc and last discharge. I have cycled the power to it but am still seeing the issue. Can anyone give me any insight as to why this would happen? Thank you.

Hi,

I have a MPPT 150 | 35 connected to https://www.aussiebatteries.com.au/batteries/deep-cycle-agm/2x-130ah-12v-eclipse-agm-deep-cycle-battery the batteries are connected in parallel.

I would like to know what to use in the battery settings page (accessed via bluetooth).

I have changed some settings to match what I "think" they should be going by the page I linked to above but I would like someone that knows more than me (nothing) to make some suggestions.

Thank you

Brendan

Returning to the off- grid cabin multiplus gives high temp warning on startup and won't allow inverter to turn on. Connecting with USB interface all looks right except input voltage indicating 33 volts on a 24 volt battery.

Any ideas on how to troubleshoot?

Dear Community,

I am still learning so apologies if my question seems trivial. I have been reading wiring unlimited which is a fantastic resource, many thanks for that!

We are installing a Multiplus 1200 VA, and 2 x MPPT charge controllers. The Multiplus should prioritize Solar and Battery at all times, but it is connected to Grid in case batter SoC reaches 10% and there isnt sufficient solar available to recharge.

Question 1: In the BYD example diagram (shown), in wiring unlimited and several other sources, it is mentioned that the negative battery pole should be grounded. In this case the BYD battery has its own grounding point, is this just the casing, or is that the negative pole? Do I need to ground the negative pole in addition?

I am running my main battery cable through a 160 A NH breaker (rated for DC Voltage) and into a Lynx Distributor Busbar. Shall I ground the negative cable on the input side of the main fuse? Or there is an additional bolt point on the negative busbar of the lynx distributor, is this supposed to be grounded?

Question 2: Due to the system being "off-grid" but within grid vicinity, we are using the common building earth, to which the entire system (DC/AC/SOLAR Potential Earthing is connected). The input side of the Multiplus is protected with an RCD, the output should also be protected with an RCD, prior to the 2 x load MCBs that we wish to run?

A colleague mentioned that the RCD is so sensitive that it may be prone to nuisance tripping, suggesting to leave it out, is this the case? What do the experts recommend?

Does the Multi 1200 VA even connect the neutral to the ground when in inverter mode, like the larger models do?

Many thanks in advance for your help!!

Best regards

Fabian

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