Unanswered Questions

Hello, Im planning on installing three phase grid tied solar system with three Victron Multis 48V 3000W (and batteries and solar panels etc.). I would very much like to use ESS assistant. The point of my question is, that the wiring in the whole house is a bit older, which means that it is done using only two wires for single phase (L and PEN) and four wires for three phase (L1,L2,L3 and PEN). After asking some companies who install Victron equipment in my country (Czech Republic), I have been told that in this type of grid I definitely cant use Multiplus II because it acts also as an residual current device which cant operate in this kind of grid (somehow the current flowing into the system by L wire does not exactly equal to the current flowing out of the system by common PEN wire in this system-that I have tested by residual current device and it is true, but so far I havent measured the difference). Also I have been told that Multiplus 1 doesnt have this in-build residual current device and therefore that one is suitable for this aplication. My question is if such a system would work completely well with Multis 1, or if there would be some bugs due to the common PEN wire anyway? Thank you all for your answers...

Hello,

I have a camper van with a 12V system powered by a single 150W Poly Panel (not from Victron) controlled by a MPPT 75/15. Now I want to upgrade and I'm thinking about selling the current panel and controller and get two 175W Victron solar panels (in parallel).

My first question is regarding the cell technology that I should go for. The 175W Mono and Poly Victron solar panels have the same size and the price is very similar too. I can't find anything on the datasheet regarding the efficiency but I read that the mono panels tend to work better on low light situations while poly work better in shaded conditions (scattered rays).

Should I go for one of each to have the best of both worlds? Or should I go for 2 Mono since it will give me the best performance in full sun and low light conditions (the conditions that I will have maybe 98% of the time).

My second question is regarding the new controller. The MPPT Calculator gives me the 100/20 option, but its datasheet says that the Nominal PV power at 12V is 290W and the new system would give me 350W at the peak. Is the 100/20 controller a good option? Will I be able to take full advantage of the system with it?

Thanks for the help!

Got a 2.5kw Victron Multiplus inverter which normally runs at just over 1/2amp at idle. It is now buzzing and using 5 amps with no load (disconnected)... anything simple to check? Took the front off and re-sat all the cables - removed the 240v cable ... nothing obvious - really struggling

Hi !

I'm using openWB to charge my EV. Unfortunately the Solaredge PV inverter allows only one concurrent TCP connection.

That means if the GX device is talking to the Solaredge the communication to the openWB is blocked.

But I've seen in the Modbus TCP menu of the (Venus-)GX that there is an entry for the SE PV inverter. I checked so far the documentation of the GX but without success.

Can anybody explain me what this means? May be I can use it to retrieve the production of the SE via the GX device.

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Thanks !

Dirk

I am running Smartsolar 150/35 units. I have had a problem twice now where the VictronConnect app (Android) has dropped bluetooth connection mid-sync to a device. Once this happens, the app will reconnect fine to the device, but the wattage only displays 10% of what should be the actual wattage. For example, if the actual wattage is expected to be 1200w, the app was only displaying 12w. The input and output voltages were correct and the charger state was correct (bulk), but no amps.

I tried closing and re-opening the app, but it didn’t fix it. The only way to get it to display the correct wattage again was to totally power off the unit and power it back on again. I don’t know whether the unit was still charging correctly as I don’t have an independent ammeter inline and didn’t have the time to wait for an extended period and take the chance of it not actually charging the batteries.

The devices have run fine for a very long time without being powered off and I believe it is the disconnection mid-sync that has caused this to happen. I thought I would report this here in case it hasn’t been noticed by the developers yet.

New Install, Easysolar 48/5000, 4 x Pylontech 2000b. The CCGX is only showing about a 1/4 of the actual Charge/discharge to the batterys. The Details screen in the Battery Device List also is not being populated. Wired and set up as per Instructions, everything else is working fine. It appears as the CCGX is only displaying the current/power into/out of one battery. Any advice?

Pylontech CCGX.pdf

I saw the blog post for a new firmware update for the Multplus-II, but it doesn’t appear on our IOS VictronConnect app. How come?

Hi Guys,

How would I go about connecting a BMV 702 to both a house and starter battery that are connected to a VSR? can they work on a common shunt?

Hi

I use my BMV delay to set external and VRM alarms, but I use it inverse.

Will the relay work like this when engaging the alarm?

Or will it work at resetting the alarm?

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Hi.

We have a hybrid system with 6pcs Quattros on a 3-phase parallell system. We have MG Lithium-Ion LFP Batteries and a MG Master LV BMS. The Quattros are Connected to a CCGX on VE.Bus and the BMS on the VE. Can. Problem here is that I dont get the SOC from the BMS/Batteries displayed on CC GX.

Is there something I do wrong here?

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Hi All,

I have installed a Mk2 multi I bought recently has been showing an LED fault condition I'm not familiar with, nor can find info about. It's not in the manual.

Absorption and float are on (solid)

And 'inverter on' is flashing

No power output.

This happened twice in the early hours of the morning a week apart. Operated normally in the interim.

The customer has reset the unit by disconnecting from the battery and reconnecting and it has restarted successfully but since it has failed a second time in a week I'm concerned and want to sort it out so it doesn't continue.

Further information: 24/3000 Mk2 MultiPlus updated firmware to latest release and programmed for the site.
24V Tubular Gel batteries ~790Ah, Plasmatronics PL60, off-grid only, No GX device, no BMV (but one will be going in soon) Mixed bag of 24V panels large enough array to fully charge the batteries.

Please advise.

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Electrician on board today and changed wiring for secondary charger. Should not effect MultiPlus or digital multi control. Ran the boat back to anchor and when arrived 4 lights in left column of digital multi control and inverter on light flashing. Turned switch to off, no change. Turned Multi Plus off and then on, then turned Multi Plus back to on. Inverter working. But no lights on Multi Plus. Not sure if charger working.

I just ordered the SmartShunt from Victron and will be installing it in a few days. The system I'm installing it on is one I inherited when I moved into my off-grid house. The Flooded Lead-Acid batteries are about 6-years old.

One thing I'm curious about is being able to understand the degradation of these batteries. In the Victron app I will enter the Ah (1020@c20) of my system. Once fully charged and sync'd with the BMV I'll be able to see projected Ah available, battery percent...etc.

The batteries are rated at 1020ah @ c20, but because they're 6+ years old they most likely don't have the same capacity. Is the monitoring app going to give me some kind of way to see that, or does it "learn" how much capacity is actually in the batteries by correlating Ah drawn and comparing it to current voltage?

Any insight appreciated. Thanks!

Hi, I hope someone can help me with this.

I have an older 12/2500/120 Multiplus that I got second hand. I have non-victron batteries with 123BMS system.

When my BMS says to stop charging via its relays (if somehow my Multiplus didn't get it, or battery overheats, or something else I have no idea...), how do I turn "off" the charging of the multiplus?

What is strange to me is that the "Remote Connections" of the multiplus have 3 pins and 2 options.

1. Short pin 1 & 2 to turn Multiplus "ON". This feels absurd because the manual says these pins only work when the device is on through the main switch (see below excerpt of manual)
2. Short pin 2 & 3 to turn into "charging only": logical!

Is there a way I can use pin 1 & 2 to turn the multiplus off ? To stop charging? Or any other way aside from putting a relay on the incoming AC connection?

My main question is, can my BMS turn off (=overrule) charging entirely?

[ 1.6.4 Remote Control — The product can be operated remotely in two ways.1: Use of only an external switch.For connection of the switch see Appendix A.Observe the following when using only an external switch:Only functions if the switch on the product is switched to the "on" position.]

Thanks for helping me out!!

Hi

have installed Quattro 8kva with 8kW Fronius AC coupled with a CCGX 800Ah of batteries. It is an off grid installation with PV inverter assistant on.

The problem is my battery is completely discharged, but the SOC still reads 82%. My SOC when bulk charge is complete is 85%. I also noticed that when charging, once the SOC rises to 85% the quattro light switches to Absorption. it takes less than an hour for it to reach 85%.

It wasnt like this originally, the SOC used to go as low as 60% but never below, this started after i added more panels to my setup. i have tried all the charger settings and nothing changes. Also i feel because of this, my battery bank is never fully charged. After spending 30mins in the bulk stage, it stays in the absorption stage for more than 8 hours , and after this the SOC is still just 90%.

I have no other battery monitor connected and no other load is connected to the batteries aside th Quattro.

Hi, I have a house with a 4kW GT system on FIT on phase A

I have added a 12kW array which I am planning to split over phase B and C.

I want to use a multiplus II as a smart inverter/charger from a lithium battery to store excess energy from any phase.

My supplier meter is net metering (non smart). So what I (think I) need is my own net metering meter which talks to the Multiplus and tells it to charge or discharge the battery to keep the import/export at zero. However this will only be pulling off one phase. This is why I need the external meter. If I am exporting 1kW on phase B and C (for example), with no import, but the Multiplus is on phase A, it can still import 2kW on phase A with no supplier charges.

I have researched Modbus meters but I just wondered if anyone had done anything similar - presumably I need an interface between the Modbus and the Multiplus to convert Net Export Power into Victron charge now Power.

I will have a zappi car charger and a DHW store system to soak up the excess energy. Ideally this would be priority order

1. Car (if present)

2. House batt

3. DHW cylinder

4. Export.

Although I would be willing to always do House first if that is less complicated (the zappi and DHW system will communicate internally but I don't know if they would communicate with the Victron).

I believe delays can be programmed such that the Victron could have a shorter delay on start up than the Zappi which would ensure the house batt gets priority over the car.

Of course as the car isn't always there I thought that would be best if the car got first dibs as hopefully if its a sunny day the house would get a chance later after the car leaves.

I should be good for producing approaching 16000kWh per year with this system (the 1year old original 4kW array made close to 4000 in a year and the 12kW array is less shaded)

My background is Marine - off grid so use a lot of Victron products. I have used R pi a bit so I guess this or Arduino could maybe be a useful interface if there isn't a premade solution available.

Thanks in advance

Olly

Hello people!

I bought a brand new BlueSolar MPPT 75/15 Victron Solar Controller 12/24V about 2.5/3 years ago. , for my small camper van, to charge phones, LED interior lights etc relatively small loads.

I connected controller to two new leisure batteries and a new 120w PV panel on my camper van. As far as I am aware I have connected it all correctly, in the right order, it all worked well at first.

The yellow light has pretty much always flashed (charging?) apart from at night. The green light is always on.

For about the last year, when I use a small amount of 'load' e.g. plug in a phone charger lead into the USB port on the volt meter the voltage on the voltmeter drops rapidly and doesn't charge the phone (even in bright sunlight).

The only thing I have noticed is that - on the bottom of the BlueSolar controller, beside the 20amp fuse, there is a place to put in 'pins' for a certain set up. My controller has no pins in position. Should there be?

Any advice or help or suggestions would be most gratefully received!

Kind regards,

Toby

Hi, A friend has asked me to look at an IP22 charger. I've connected it to the power source and it seems to charge 2 batteries that I connected, but there are no indications on the LEDs as to what the unit is doing. Nothing ! Please help...

Hi !

I have a Easysolar 24/3000 (bought in 2018) with a 10 kW lithium battery bank.

I works fine, but I see that my firmware version is 413. Do I need to update it as long as the system works fine?

My impression is that I do not need to, as long as everything is OK. Correct?

@mvader

I have just installed a new Phoenix Inverter Smart 12/2000. The push button mode switch will not work even if held on for more than ten seconds. The unit will change modes correctly using Bluetooth. How do I get the push button to work?

Warren.

I noticed that vecan dBus services (using dbus-spy) disappear if I kill the GUI process. These services return once the GUI has restarted.

Specifically in my case:

com.victronenergy.vecan.can0

com.victronenergy.tank.socketcan_can0_vi0_uc855

I'm currently running Venus version 2.52

Is this normal/expected or a bug?

Hello,

normally my loads are small so I chose a medium size Multiplus due to the lower standby consumption. This is also the reason I don't want to use a bigger unit or parallel setup because this would give me a much more higher daily consumption.

Anyway there are a few high loads I hardly use. For these loads I want to put a Phoenix 3000 at the AC-in of the Multi so I can run the small unit 24/7 and the bigger one only when I need it. Doing this I still can use the same circuits.

Technically this is not a problem, I think. But what about the Venus device. I can only set "grid" or "generator" as far as I know but not "inverter". This would give me a muddled VRM as the energy comes from the battery. Can this probably somehow be added in future versions of the OS? Or isn't it possible at all.

Can both, a Phoenix AND a Multiplus even have a VE.Bus connetion to a Venus or is this only possible with VE.Can?

regards,

Porcini

Hello,

is that somehow (unofficially) possible or do the counters always have to start from zero after replacing the unit and editing is impossible?

regards,

Porcini

Hi,

I've got a Phoenix inverter 12/1200 VE.Direct with Bluetooth dongle. With VictronConnect I can configure the Phoenix and see how high the load is, but I cannot see how many Watt or Ampere it's outputting or taking from the battery.

I though the bigger Phoenix would be able to show that?

If now, how can I realize that?

Thank you for any information or hint!

Hello

Suddenly my Smart Solar MPPT 100/15 has the following problem

The batteries goes up to 28.8V (Bulk voltage) goes to absorption (1A)

(2x12V lead acid batteries)

but applications shows me that goes only 0.2A to battery after some minutes goes to float which should be 27.2 but drops down to about 26.6 because the current for load comes from the battery... and after some second goes again to initial load and so on...

This is strange because the current for the load before came from the solar panel...

I have a 280W solar panel and load is only 85W when charging batteries 130W ....

So what could be the problem?

Defect batteries?

Batteries are normal auto batteries 75Ah each acid, calcium

Should I initialize an equalization cycle? (Never done until yet, they are about 4 month with this setup and 1 year in total use...

1. Bonjour J'ai installé un Ecomulti chez un client. A chaque coupure réseau (fréquente en Guyane) l'onduleur prends correctement le relais mais lors du retour du courant l'interupteur différentiel a l'entrée AC de l'onduleur tombe, si on le remonte il retombe immédiatement. Lorsque le soleil revient et l'onduleur réseau sur la sortie de l'écomulti a rechargé les batteries alors il est possible de remonter l'inter différentiel. Merci pour votre aide.

I have a 12v 100W PV panel left over from a prior project that I would like to use as a battery maintainer for the vehicle's 24v battery bank.

What is the simplest way to go about this?

The 24v battery bank is strictly for the vehicle, not tied to the habitat system.

Hello, I plan to use a Multiplus II-GX 48/5000/70-50 with Fronius 4.0 on a 3-phase grid connected system. The 2 phases are connected directly to the consumer and the phase-3 will pass-through the Victron-Fronius system supporting Energy Storage System on one phase only . I have the next 3 questions:

1, Does the above system works fine?

2. Is the Multiplus II-GX anti-islanding certified and does exist a certificate for Greece?

3. Assuming the 3 grid phases are on. Does exist the possibility on the above system to have on the 2-direct phases 50Hz grid freq. and on the phase-3 higher ( for example 52 Hz) due to MG shifting on frequency? (This frequency unbalance would be abnormal for 3-phase loads).

Best regards,

Pavlos.