ac out 2 Image

ac out 2

Multiplus ac out 2 not working

Hi there

I have a multiplus 3000/230v and I do not manage to get any voltage on the AC Out 2 when connected to the grid.

Is there any magic to get this to work??


andres Hs1 asked
Matthias Lange - DE commented ·

3 Answers

1phase in (charge) , 3phase out _charging not working


I'm configuring a system with 3 MP2 , in a 3 Phase out setup. As per the instruction video's etc. this should not be any problem, but the charging doesn't start when the phase comes up at the master L1. The 3 phase out put works fine.

So I have checked the forum, and checked the training video's again.

In the training video's its shown in the following diagram. The inputs of L2/L3 are seemingly connected with a 0V, therefor I tried to have the null connected to all three inputs, this didn't help.


Anybody an idea what I have done wrong? Are the connected nulls at input needed (electronically I can't imagine it's needed, but the screenshot shows something there)?

Best regards,


emiel asked
emiel commented ·

2 Answers

Paralell multiplus ac-out breaker tripping


I have 2x EasySolars 24/3000 (basicaly Multipluses) configured in parallel.

The problem is that from time to time the main ac-our breaker tripps (one or the other inverter). How can I identify the issue?

Seems sporadic to me with no special events..

Thank you!

adco asked

0 Answers

Multiplus 24V 3000, AC 220 V output consumer board configuration


on the attached schematic there are two AC outputs. I am confused as to how the daily consumers should be connected. I do not want some consumers on AC 1 and others on AC 2. I have designed 6 AC circuits needing separate MCBs and i need them to be supplied from either shoreline and the inverter output seamlessly. Can anyone help my understanding of the two AC outputs please? Thanking you all.


miltonmews asked
miltonmews commented ·

1 Answer

Multiplus 12 3000 AC out ports

Why are the second AC ports on Multiplus 12 3000 not active?

info-8 asked
jake answered ·

2 Answers

Ignore AC and DVCC

I have recently installed solar panels on my motoryacht. I am now looking for the most economical use of the solar panels, also in order to reduce the cost of shore power. The electrical system has mainly Victron components, except the panels and battery: Quattro 8000/200, Venus GX, MPPT 100/30, 720 Ah tubular plate batteries and 2 x LG Neon R 370 Wp panels, latest firmwares.

I have studied all the manuals and looked for answers on the community site. Although I see similar setups, I still do not have the ultimate answer on how to use the panels the most economical, either by using Ignore AC, DVCC, lower float voltage or a combination of these.

I fully understand how Ignore AC in VEConfigure works and have now set it up according to below screenshot:


I have been to the yacht today and have tested it with several loads. When using heavy load, the Quattro will deliver the power instead of drawing it from the battery, so it does not unnecessarily drain too much, which would take forever for the panels to charge back into the battery. There is a certain amount of equipment that draws about average 200 W, so in a day I will loose 4.8 kW. On sunny days the panels will charge with about 4.8-5.1 kW. So on cloudy days and near winter time the batteries will slowly deplete and when voltage reaches 23.5 V, the Quattro will kick in and charge (with max 100 A) up to when bulk is finished (85 % SOC). I might change that in wintertime to when absorption is finished, as the batteries need to be fully charged every once in a while. So far so good.

The manual of the MPPT states that the DVCC function will result in the MPPT being an active controller in the system. "For systems with lead batteries, DVCC offers features such as a
configurable system wide charge current limit, where the GX device actively limits the
inverter/charger in case the solar chargers are already charging at full power". I have tried the DVCC feature (without Ignore AC) with a setting of 100 A for max charging and shared voltage, current and temperature sense.
I have observed the behaviour of MPPT and Quattro for a long time and my impression is that the MPPT does not always do what it should. I can see the Quattro charging with high amps and the panels with relatively low. When I switch off the shore power, the panels immediately jump to a much higher charge, so the panels are under DVCC not used with maximum capacity. I would also expect that when batteries are full and loads are low, while panels can produce more than the load, that the Quattro might stop charging all together.

An expert advised to lower the float voltage of the Quattro with 1 V, After lowering that setting to 26.6 V, I saw this morning at around 08.00 hrs that the Quattro stopped charging. Not completely sure why?

I have gathered my thoughts and I think I have to options: 1) use Ignore AC and 2) use DVCC. With option 1, it will deplete the battery more and I think the panels are used most economical, but I need to make sure the batteries are getting a full charge every once in a while. With option 2, the batteries are kept a full charge (100 %)., but I have the impression the panels are not used to the max and the Quattro will only stop charging when the voltage of the batteries is higher than the 26.6 V. Which brings me to the question do I also need to lower the absorption voltage in order for the Quattro to stop charging when in absorption fase in order to get the max charge out of the panels? I find lowering these setting in contradiction to the DVCC manual: "Limit charge current. This is a user-configurable maximum charge current setting. It works across the whole system. MPPT Solar Chargers are automatically prioritized over the mains/generator".

By the way: I use the AC out 2 of the Quattro for heavy users, with the intention that when I loose shore power (while sailing [do you actually sail, drive or operate a motor yacht?]), it automatically switches of the heavy consumers and I will not unnecessarily deplete the batteries. With Ignore AC while still in the harbour, I loose the heavy consumers as the Quattro needs AC on either AC In 1 (generator) or AC In 2 (shore power). I probably have to rewire the heavy consumers to AC In 1.

My questions:

1) Why does the Quattro stop charging when lowering float voltage when panels are charging?

2) Do I need to lower the float voltage in order for the Quattro to stop charging while enabled DVCC?

3) Why is DVCC not using maximum available charge from the solar panels?

4) Do I also need to lower the absorption voltage while DVCC enabled so the Quattro stops charging in absorption fase to maximum use the charge of the panels

5) Can I, or should I, use DVCC in combination with Ignore AC?

Any comment, suggestions, answers are welcome.

I have also published about the installation of the electrical system and the solar panels on my weblog (in Dutch, but has Google translate button): .

jurjenhoekstra asked
erichabg answered ·

2 Answers

I’d like to avoid using 2 AC outputs if possible on my Multiplus II x120

I have one 240V non essential load in my home (Air conditioner). It is in my breaker panel mixed in with all of my other 120V circuits. I am working to install a Multiplus II x 120 and am curious to know what would happen if my panel were supplied with 120V from the Multiplus during inverter mode (no 50A shore connection) if that 240 load would just stop working? Or what if I just flipped that breaker before initiating inverter mode….wouldn’t that accomplish the same thing as adding a whole sub panel supplied with AC out 2 for that load?

grahamazing asked
Kevin Windrem answered ·

1 Answer

Wiring AC output 2 on a Tiny Home Panel

I'm a solar installer in the US and new to Victron Products, as well as working on the AC side of systems. I own a tiny home and decided to design a system with a Multiplus 2 x120 3kVA. The reason I chose this inverter is because I have a heat pump system that requires 240V, also I have access to reliable 50A shore connection.

Below is a picture of my panel. Note I haven't installed anything yet. This is just a straight up shore connected panel, nothing special. Here's what I do understand... Coming from my AC output one, I'll have 6 G wire feeding this panel on a 70A breaker (I'll be making room for this breaker). What I do not understand is where and how the AC output 2 will land. The top right breaker (double pole 15A) is for my heat pump. But where do the wires from the inverter actually land? I read the manual and it recommended a 35 A breaker. Is that just it? If so I'll probably need a bigger panel.


Thanks for the help

grahamazing asked
kevgermany commented ·

0 Answers

AC shutting itself off easysolar2 gx

3 times this week I've had the AC turn off, the unit is not saying anything. Setup is running offgrid with 3200AH of deepcycle batteries, which aren't low

grogonn asked
grogonn commented ·

1 Answer

AC out 2 deaktivieren

hallo, bitte um hilfe,

kann man irgendwie den ac out2 mit einer app oder anders manuell ein- und ausschalten

vielen dank !!!

gromheisei asked
gromheisei answered ·

2 Answers

Frage zu Multiplus 2 5kW AC Out 1 und 2

Hallo zusammen,
ich bin gerade an der Umstellung meiner Heizung auf eine WP.
Nun möchte ich dazu eine Backuplösung haben, die die Heizung einen Tag auch bei Netzausfall betreiben kann. Dazu plane ich gerade noch einen Multiplus 2 5kW und einen 23kWh Speicher mit ein.
Nun zu meiner Frage: Von der Verschaltung soll der MP2 direkt in den Heizraum und somit elektrisch direkt vor die Heizung. L1 vom Hausnetz kommt auf AC in, die WP auf AC out 1 und der Heizstab (3kW) auf AC out 2. Hintergrund ist eine mögliche Überlastung des MP2, wenn bei Stromausfall der Heizstab anspringen würde. Sollte es bei einem Stromausfall wirklich mal soweit kommen, dass der Heizstab zugeschaltet werden soll, dann ist es mir viel lieber, der Heizstab funktioniert nicht als das der MP2 wegen Überlast abschaltet und somit die ganze Heizung ausfällt. Ich gehe allerdings davon aus, dass sich in der WP sowohl der Kompressor als auch der Heizstab den gleichen Nullleiter teilen und das könnte dann eben zu einem Problem kommen.
Kann mir an der Stelle jemand erklären, ob es geht und falls nein, was ich machen müsste?
By the Way. Ich würde in der Hausautomation gerne den Stromfluß zum MP2 und Abends natürlich auch gerne den Stromfluß zurück ins Hausnetz darstellen. AC Out spielt dabei keine Rolle, weil die beide gemessen werden. Aber brauche ich für die Leistung über AC in noch einen Zweiwegezähler oder kann das der MP2 von Haus aus und ich kann die Werte aus dem GX auslesen?

mlapp asked
mlapp answered ·

5 Answers

Multiplus II GX with generator, output 2 disconnect when I connect loads.

Hi everyone,

I have a Multiplus II GX with pylontech batteries, when I connect the generator there have good voltage and frequency, it charge the batteries and it's voltage in AC_out_2. The problem is when I connect something to that line, the multiplus disconnect the generator in AC_in and it's don't show any error.

Claudio Paredes Budon asked
Paul B answered ·

1 Answer

MPII 2x120 use

I’m in the process of a Sprinter van build in the U.S. and would like to be able to utilize J1772 EV charging power when available, I don’t need any of the 240v in the van other then to charge the six 105ah LiFePo4 batteries. I currently have a MP 12/3000 120 and was wondering if I switched to the MPII 2x120 that I could achieve this? Could the inverter convert the 240v and give just 120v on output 1 or would I just have to use one leg and neutral?

Ideally I would add a manual transfer switch to be able to charge off a standard 120v shore connection as well.

ericdhvac asked

0 Answers

Use of AC-Out-2

I'd like to use the AC-Out-2 to charge my starter battery and my bow thruster batteries. Can I split the output or run two lines from the AC-Out-2 to the batteries? One sits near the Inverter/Charger and the other is 20' away.

bob-delzellm-on asked
piraya answered ·

2 Answers


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