VRM PV-Inverter power flow bug?

Hi, Today i noticed a bit of a bug? (i think) on vrm when pv inverter is pusing power to the multiplus and exporting. I attached 2 videos with the problem one is with ac loads around 50W and the other one is below 30W.

When the load it above 30W the animation from inverter is going the way to the AC Loads and including the pv inverter. When the ac loads are below 30W then the animation is gone and only pv inverter animation is there and not going to the loads or the inverter.

Shouldn't the inverter animation be inputting power to the output when the pv inverter is exporting?

With nearly no ac loads This is with a bit of ac loads

This is the multiplus data on the venus console


xpatrik asked
gazza answered ·

1 Answer

MPPT Does not charge. Shows PV voltage = BATT voltage

My MPPT controller shows 0W yield from PV charging. When I measure the 140W panel directly, I get 18-24V from the panel. As soon as I connect it to the MPPT controller, I measure ~12V on the cables while connected. I am confused :)

I do not recall any changes to the system made. I might have once reset all my Victron devices (SmartShunt + MPPT) so it could be related to some setting.

Any advice greatly appreciated.

wessel-du-plooy asked

0 Answers


Hi, I have a pylontech us5000 48v/5000 connected with cerbo gx and a smart solar mttp charger connected by ve.bus .

I have also a 5000w made in china inverter without any bus (it has only 4 line, 2 for battery connect and 2 to output 220v) and i have an old victron phoenix inverter without bus. Can I connect Pylontech battery to my inverter only using Vcc e Gnd Lines?

alex-la-mela asked

0 Answers

VRM "advanced" not storing layout

Been following a mates VRM for 6months, and had my own for 1 month.
The advanced tab used to stay in the layout selected, now every reload it defaults to its own order.
Its always done that for the phone, but the laptop has always stayed.
Noticed both mine and my mates advanced tab layout issues this last few days - any idea's?

kev-duckworth asked
modian answered ·

2 Answers

How can I tell if Multiplus overload warnings are grid related, or a system problem?

I have an ESS system with a 5kva multiplus 2, 16kwh of pylontech batteries + 6kw solar panels. The system regularly gives warning alarms, which I suspect may be grid related but would like to be able to confirm. Overloads occur when high load appliances start up, when there is high solar production(& use by 3kw solar diverter) and recently has also started happening when the inverter is charging the batteries (i.e. loads are on pass through) overnight. Base loads are typically 300-500w.

The cabling from the utility's meter to the Multi and from the multi to the consumer units has low resistance (less than 0.1ohm measured with a fluke multi-function tester) and there's no sign of heating of cables or bad connections on the batteries or elsewhere. I suspect a high impedance grid connection as we are on the end of a rural spur. I have noted the grid voltage drops considerably (from 230v+ down to 220v or less sometimes) when the multi is charging. My supplier/installer has just been ignoring my repeated requests for assistance. Is there any way to be be certain is is a grid related problem before I talk to the DNO?

simonb2 asked

0 Answers

[SOLVED] SmartSolar Charger 150/35 - still experiencing zero output issues after firmware 1.53 and 1.54 updates


After updating the firmware on my 3 SmartSolar 150/35 devices from 1.51 I have been experiencing issues where the PV power drops close to zero. In some instances the situation rectifies itself other times I need to disable/enable via the VictronConnect app. I saw there was an issue with the 1.53 firmware and hoped the 1.54 firmware would rectify the situation but unfortunately the issue still persists. Today device 260 was off for 2 hours before I disabled/enabled it via the app.


  1. Quattro 48/8000/100-2x100 - firmware 469
  2. 4 x Pylontech US3000
  3. 3 x SmartSolar 150/35 - firmware 1.54
  4. 2 sets of 6 x JA Solar JAP72S01-330/SC
  5. 1 set of 6 x JA Solar JAM72S01-380/PR
  6. Venus GX - firmware 260



Is Victron aware that some devices still have this "drop out "issue even with the 1.54 firmware?


jkkm asked
kaypea answered ·

18 Answers

Use of one output on Blue Smart IP22 12V 3 channel as a +12V signal

Can I use output 1 for charging and output 2 as a +12V signal output to my CBE distribution board to detect whether the charger (i.e. camper van) is connected to 230V or not? Will the Blue Smart give constant +12V on output 2, or cycle between outputs, which will turn on and off the +12V "signal" in my case?

The reason I need this is that my legacy CBE CB516 charger had a "S" net +12V signal output to inform the CBE distribution board about the 230V connected state. This is used both to turn on the "230V connected" led on the control panel, and to administrate the charger relay for starter battery charging.

The legacy "S" net +12V signal was rated 50mA. Will the Blue Smart "push" too much current which may blow my distribution board?

If this is possible, will somebody please guide me through any important config settings?

terjeau asked
terjeau commented ·

1 Answer

VE.Bus - Charge Voltage Setpoint - where is this value entered?

VE.Bus System - Charge voltage setpoint 30.4V.pngVC-Multi-General.pngVC-Multi-Charger.pngVC-Multi-Inverter.pngVC-Multi-Product-Info.pngHi - I could not find out despite studying the many instructions from where "the System" retreives the 30.4V Charge Voltage Setpoint!? Nowhere this value has been entered. Please find my Multiplus II settings. From the Battery supplier instructions the Charge Voltage shall be 29,2V - so I understood the "Absorbtion voltage" = "Charge Voltage"? - but the VE.Bus- Data records still shows me 30.4V - can somebody help me out please.

geraldb asked
JohnC answered ·

5 Answers

Pylontech US3000C / US5000 internal failure problem and how to fix it

Hello guys,

As we found out like many otherrs, many recent US3000C and even US5000 are showing randomly "internal failure" alarms on the GX. Whether it is a single battery or a cluster of several in parallel, the message is often relayed at various times during the day, and is not dependant on the SOC nor the CH/DCH status. After many exchanges with Pylontech's engineers and debugging through Batteryview, we share the results and how to solve this issue.

Internal failure is actually relayed through the CANBUS by BMS when there's an imbalance between the 15x cells in one given US3000C/5000 pack (74 / 100Ah). As you can see from the debug files below, one cell in the slave battery actually overshooted to 4000mV, which obviously cause the battery to send an ALARM signal to the system (system fault 0x8), and the GX shows therefore "internal failure", WITHOUT being more specific. It is actually the MASTER battery which shows up an alarm and sends it to the GX.



At first we were worried about such abnormal voltages readouts on cells. After exchanges with Pylontech, we found out it is actually not possible that one cell reaches such high voltage (indeed it would compromise the safety and possibly brings on thermal runaway). Rather, it is a sampling error by the BMS which is apparently fixed by the latest firmware version (depending on the S/N of your battery), 1.7 or 2.8 (depending on the serial number). We have thus applied the patch and so far we haven't got the alarm again.


Hope this helps !

perma-batteries asked
nhuillard answered ·

1 Answer

Multiplus firmware for DVCC

Hi everyone, trying to sync voltages maybe I'm missing something?

Just have a couple of questions is DVCC okay to use with the 415 firmware on the multiplus as it requires 422 firmware I'm trying not to update it unless really have to (the multi is around 8 years old with new chip)

Or, is it best to either use the VE smart network instead it's mostly just to sync voltages

The system spec

Victron multiplus firmware 415

Two Victron smart solar mppts, 150/85 (10 series)which needs the latest Bluetooth dongle for the VE smart network to work and 100/50 (11 series) which has option already.

Victron Smartshunt


Lithium battery bank with heater inbuilt not Victron

Would it just be easier to just buy the BT dongle for the 150/85 mppt so to connect smartshunt/mppts to VE smart network or is there another way to sync voltages

Any ideas would be great thanks

salv asked
salv answered ·

6 Answers

How many US2000C for an MPPT RS 450-100?


I currently have a Smart Solar MPPT RS 450-100 to which two strings are connected. A string of 10x450Wc and another composed of old 6x245Wc panels.

On the battery side I have 4 US2000C from pylontech and I would like to add one or two. I can't find the information in the regulator documentation, how many pylontech can I add without having to upgrade to a more powerful regulator?
For information, my inverter is a Phoenix 48/5000.

Thank you !

lonso asked

0 Answers

SmartSolar MPPT 150/85 VE.Can - No current flow in Bulk with PV at VOC

I have a SmartSolar MPPT 150/85 VE.Can connected to 6 320W Renogy solar panels wired in 2 parallel series of 3 panels on an RV. I have 15A fuses on each string and a 25A circuit breaker in between the fuses and the MPPT charger. The new system has worked fine for weeks, until one morning after a day of the charger being in float mode for most of the day, both 15A fuses were blown, but the 25A breaker was not tripped. I also noticed that the charger said that the PV Array voltage was within a volt of the battery bank when the array was actually at 0V and/or completely disconnected.


After replacing the fuses, the charger seemed to work for the rest of the day. By the next day, one of the 15A fuses was blown. Part way through the following day, the charger stopped charging altogether even though no fuses were blown or circuit breakers tripped.


Now, when the charger is in bulk mode during the day, it reports the battery voltage and PV array voltage but no (<5W) of actual charging, At night, it still reports a PV array voltage of approximately the battery bank voltage.


warren-b asked
kaypea commented ·

8 Answers

MPPT charge reduces to zero for no reason

I have recently fitted a new EasySolar II GX and have a problem that I don't seem to be able to resolve. The unit is fitted with an MPPT250/70 solar charger which no reason that I can see, just stops charging on a nice sunny day - see attached graph from today.


As can be seen, a nice sunny day and suddenly the current drops off to zero and will sit there until I turn the MPPT off and then back on again.

System is 24v, charge current set at 50amp max (calcium lead batts), load output set to always on. 6 x solar panels 1800w max.

As can be seen the solar voltage rises slightly when the charger goes off, and when reset comes back on. This happens most days, but there is no tie-up between when it goes off each day. Its a new system thats only three weeks old, and has done this from new - I'm begining to think its actually faulty or is there some setting I'm missing?

kaypea asked
kaypea answered ·

5 Answers

Solar modules

I have a 5kw Victron system with Freedom Won E Tower battery. I asked for a quote on Solar. The installer indicated that he is going to use 8 x 550W JA solar modules. Please advise if it will suffice.

arrie asked
klim8skeptic commented ·

0 Answers

New Phoenix inverter Bad Voltage readings

Hello, new Here,

I just installed my Small solar system (SmartSolar Mppt 75/15 with 200w solar pannel, i will recieve soon a second Controller and pannel). A 100ah AGM battery ans a Phoenix 12/500 (with v.direct) inverter .

The inverter is working but i get Strange battery Reading from the Phoenix:

(I get 12.25V by Reading with a voltmeter directly on the battery and 12.16v at the Phoenix input )


also tested without load pluged on 230V :


For the cable i use a 4mm2 cable lenght Between 30-50cm .

Something is wrong or it's normal working of the Phoenix ?

Thanks in advance.

Cordially. Etienne (Yes it's m'y Real surname ^^ )

Etienne asked
klim8skeptic commented ·

2 Answers

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