The VE BUS is giving a low battery alarm while the battery voltage is normal in the BMS. See picture below. There was a high current draw event and after the VE BUS voltage started swinging low when the inverter mode kicks in. Any ideas how to resolve this? The system is a split phase with 2 Quattro's and BYD battery bank of 7.5 kWh.

[image]

Hello - I have just installed my 1st Victron system - EasySolar (MultiPlus 48/3000/35-50 ) + BYD (2 cells). The VE.Bus firmware is 413, CCGX firmware 2.20). I understand DVCC cannot be enabled until the VE.Bus firmware has been updated (and as stipulated in the Victron & BYD B-Box manual). Is this anything to be concerned about until such time that the firmware can be updated?

Thanks!

Hi

Can I ask a question to all the guys with intermittent Ve Bus Error 17 ‘s

Do you have a gx installed ?

And how are you all restarting the system after the error?

I have a colour Gx running the latest firmware 2.30 and 2 10kva quattros on a Byd b box setup

Before the error there is nothing to suggest why the master turns off

And I am able to restart the system on the VRM via the remote inverter on off

Regards

Mike

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:

[image]

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!

I have an easysolar 5000 installed with a 2.5kWh BYD battery for self consumption. When the battery is below 13 degrees the victron does not wind back the charge to the battery inline with the BMU causing a high charge current fault and then the battery shuts its self off. Any ideas what setting I have wrong??

System is over 12 months old and the generator worked all that time including yesterday, today the generator is on and covering the load but will not add charge to the battery, if just fluctuates with the AC load. No faults on the battery, it is at 12 degrees and will accept 100a according with health 100% and no alarms. Battery is 38% and 53v

Hi,

On my Venus GX, when looking at the details for the BYD battery, there is a section named "History".

When I enter that history menu item I get a message:

"Info:reset history on the monitor itself"

What does that mean? What is it for? What is the "Monitor itself"?

Just curious.

Hi

Have 2 in parallel 48v 10kva single phase installed quattros using the byd b box 2.56kwh

They were pre setup and working fine before installation on site for about a month

We’re installed on site on the 27th of December all working fine up until the 31st of December when they ve bus errored 17

The inverters were turned off and back on again and then working for a couple of days fine then when error 17 again

All cabling and connects checked and sound

Seems strange they can work for a few days with out issues and then error ?

And they were

A customer wants to have his PV installation working ok and have electricity in his entire house, even if a power outage occurs.

I am planning to connect the mains to the AC-in and all the distribution board to the AC-out of a well dimensioned MultiPlus-II. Also install PV panels, MPPT, BYD battery, Venus GX and an energy meter.

Will this ESS system provide backup and normal performance even in the event of a power outage?

I am not sure all Victron devices will continue working with no grid power, but with sunlight and energy in the battery.

Thank you!

Hi

I ahve a BYD battery system with low batteryb charge, there is an grid AC 2 input but the Victron Quattro units wont let it charge the batteries

Hi there.

My solar sparky tried connecting and configuring my Easysolar (48/5000/70-100 MPPT150/100) and BYD (B-BOX Res 10.24kwh) and 12 Qcell panels setup but had the following issue:

"There is a slight short from Negative on the battery isolator to Positive on the inverter DC battery bus of 148.7 Ohms."

He can't seem to find support from anyone so i was hoping someone here could assist?

Thanks

Phong

Few days ago I have successfully installed an ESS system based on MultiPlus II 48/5000/70, CCGX and BYD B-Box Pro 7.5. It worked fine until yesterday. The batterie went off and cannot be turned on again. The error message when trying to turn it on is: "yellow error LED plus 4x buzzer" indicating a safety mode. The last information in the logger stored before the outage is showing the battery at 100% and 65,18V which is way too high. It should be below 58V.....
I already contacted the BYD support, but wanted to know whether anybody out there has experienced such an issue or has an idea what the root cause is?

(all parameters has been set according to this side: https://www.victronenergy.com/live/battery_compatibility:byd_b-box)

I have a system Multiplus 2 48 V 3000w. In good sunshine, the battery is basically only charged up to 72%. The battery voltage indicates 55V.
Can this be a wrong attitude?

I have a system Victron Multiplus 2 3000W 48 V with BYD battery; For some time the battery has not discharged at night. Everything had worked very well after installation. What can have changed?

Hi, Every one

I recently setup a system with 3 Phase Quattro configuration and 16 of BYD Box L 2.5 kWh batteries.

I addressed all the batteries and connect to a BYD Box pro 10 BMU.

( I bought 1 BYD Box pro 10 panel with 4 batteries and 12 single batteries).

It works, however, when I connect the BMU to CCGX, the limit charge and discharge current is 140A, it seems only know 4 batteries, and the max voltage is 56.5 and min is 43.)

I just wonder whether I have to buy another BMU to manage total 16 batteries?

Thanks

We experienced High Battery Voltage Alarms on 2 Multiplus 48/5000/70 systems.

Settings:

- mode "Keep batteries Charged'

- both in Absorption mode

- Absorption voltage set to 55.2

However, with both systems the battery voltage went up as far as 58 V, triggering Alarms which cleared after about 3 hours, when voltage went back dropped back to around 55V.

What could be the cause of this?

I just installed a 15000 quattro + 2 parallel units of 13.8 BYD Box. I enabled battery monitor and I used 540AH Battery capacity. 108A as charging current (will the charging current be automatically determined by the BMS or the input battery charging current from the VE config plays a significant effect in the charging current?) float voltage is 55V, absorption voltage 55.2V. No assistant installed. No MPPT. No ESS settings.

Hello

We are installing a AC Coupled 3 Phase ESS (Grid Connected) system with 15kW 3P Fronius connected on Output of 3 x 5kVa MultiPlus II. Were planning on installing approx 30kWh of BYD lithium, however i noticed on the Victron AC Coupling & Factor 1.0 rule page there is also a minimum battery size required. (in this instance it is 48kWh)

Can anyone explain this?

30kWh of BYD will deliver 30kW of power & accept up to 20kW of charge.
If the PV inverter was on the Input of the Multi the minimum battery size 3 x 2.5kWh modules acording to the Victron/BYD guide.

Regards

Nick

I have 2x Phoenix Inverters 48/5000 in parallel with 2x BlueSolar MPPT 150/70 to charge a BYD lith bank, The batteries was run to 95% flat and system switched off (this was during night time). Inverters and BYD and CCGX turned off, next morning MPPT still on and charging BYD bank, but system stays switched off. I have switched everything off and back on but system stays off. Any help???

Just wanting to put this one out

Colour gx, byd, Bmu 3 smart mppt’s

The colour gx only has 2 ve direct ports so is it safe to say the ve direct to usb lead can be used for the 3rd mppt and not cause any issues?

Hi support,

Hope you can help me on my below inquiry.

[image]

Good morning @BYD_service

I see that you are the expert on the BYD and would appreciate if you could answer a few queries.

I have a Victron Multiplus II with the BYD 2.56kWh battery. The battery never seems to reach 100% SOC.

The MP-II is grid tied as backup only for grid failures (ESS). It charges correctly and quickly but doesnt reach the 100%.

[image]

[image]

[image]

Although the charging current shows 25A it actually charges at ±32A looking at the graphs.

Considering that my system is for grid backup only (no solar), is there any recommendations with regards to cycling, DOD etc that you would recommend i.e. discharge to 30% SOC once a month or is it fine to just let it be.

Thank you

Kind regards

Nico

I have AC coupled micro grid istallation with 2 quatro 2 Fronius Primo and a BYD B-Box 10.5

[image]

When i configure the battery with VE configure in the charger tab like this

[image]

Battery type : Lithium

Absorbtion voltage 56.8

Float voltage 54

and ESS like this

[image]

The system is running fine the 2 quatros go in to Float but the battery is only at 99% 54.2V

because in the configuration Flost voltage set to 54V.

When i change the configuration in the charge tab to the values suggested in the

Victron & BYD B-Box manual

Absorption voltage 55.2

Float voltage 55

[image]

under battery type is says : no corresponding default

and in ESS i get this message

[image]

When i keep the settings as in the Victron & BYD B-Box manual

Absorbtion voltage 55.2

Float voltage 55

The system is running but it never gets in to Float sate is switching between Bulk and Absorption

charging the batter to 56.4 volts and then discharging to 54V and so on.

So what are the correct setting here for the BYD battery?

I have aBYD B-Box 10.5 connected to 2 Quatros in a 120/240 spliphase configuration.In normal operation the green charge light is on the float but the inverter green light is blinking all the time even it is path trough. The battery are only 99% never go to 100%. Quatro software 459 BYD Box v4.17. i think in the normal path trough mode the inverter light should not be blinking or on.

Any idee what could be wrong?

[image]

[image]

Hi.

System is quattro with fronius on the ac out with 9kw of panels and byd 13kw batteries. Ccgx is showing charge current limit of 30amps and sending loads to grid.. battery is at 45%.

How do i adjust this please

I have 2 different sites with the same error on both.

Both systems have 2x Multiplus 5kVa in parallel.

Battery connected is BYD B-Box 10.24kWh.

Since installation both systems have been giving Error 17.

Both systems were updated to latest firmware 2624431, and then loaded with older firmware to try and correct the error.

On both systems the comms cables have been checked and replaced with new cables.

Has anyone had similar problems and if so what was your solution?

Thanx in advance.

Regards

David

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.

[image]

How could we solve this problem?

Thanks in advance.

HI < I have the following installed and working ok until a recent shift in the weather so needed the generator,

1 x 10KW Quattry with 433 firmware updaed

Color GX with V2,23

2 x MPPT 150/100 with V1,39 ( 24 x 250Watt modules)

BYD Box 10 x 2 with V4.17

Good quality 1500RPM 15KVA Generator with very stable 231V output and 51HZ no reaction to loads( IE no slowing etc)

System has been working fantastically well under quite heavy loads until called for generator,

The system starts generator ok on demand at an SOC of 20%, and runs up genny ok, then connects to the Quattro input and goes through the normal sequence, starts bulk charge, after a few mins ( even as much as 15 mins) all seems normal, then for no apparent reason the AC input is dropped by the inverter, and the system reverts to invert, after a few minutes the AC in accepts input and goes to passthrough and then Bulk, and again after a few mins drops the AC input, and so it goes on,l imit inverter off,

On system Setup,

Battermonitor automatic, Sync VE BUS SOC On,/use solar charger current to improve Bus VE SOC on, Solar charger voltage control On, Solar charger current control on,Has DC System off, DVCC On, , SVS Off, STS On, Limit charge current On, BMS control On

Generator start stop, on Auto, SOC< Battery voltage and Load atr 5KW,

any ideas as to why the Inverter keeps dropping AC would be helpful, or if I have any setting incorrect or not activated please advise,

thanks,

HI Good day all,

I have just installed a Victron 10KVA Quattro with BYD B Box 20KW , PV modules 5KW with VIctron MPPT, OffGrid with 15KVA Generator ,

In the setup operations the only indication apart from the Firmware update issue, is on the Color GX the ( Updated) is on the BYD Box parameters the max charge current is showing 0 but Voltages are OK, and in the settings .> system setup up. > the DVCC control access dissappered when switched to ON as per setup instructions,

All commissioned normally until I came to update the firmware on the Quattro ( 2653413.VFD), to be updated to 2653433 . Using Windows 10 PV with Victron USB MK3, ( which connects OK with VE Configure and allows setting),

Then Attempt to Update using VEFlash, Latest update confirmed, process works OK up to the point of Connecting port ( it finds the port(COM3), then on the attempt to load the firmware the message received is Error Occurred , Please try again,

I have Double checked firmware numbers

I have updated all software ( VIctron Connect and My PC)

Disconnected all firewalls ( just in case)

I have uninstalled and reinstalled All Victron Software,

Powered down and powered back up all systems( including my PC.

the problem persists, has anybody seen this error before and what actions have been taken to resolve, without this Update it seems the BYD wont function correctly, so need asap,

I have searched all Error codes, Troubleshooting guides that I can find to no avail,

I have a Support call in to the Supplier Tech dept , but this will invariably take days ( this is Spain).

thanks in Advance,

Mike

Morning Gents

I am losing comms between my 2 x 2.5kWh BYD B box units. Installation is 3 years old and the issue started in January this year. Tried the following without success:

1. Swopping CCGX
2. Rolling back firmware
3. Changing comms cabling

What did however seem to work was replacing the CCGX with a Venus. Venus was in for 2/3 weeks without any comms failure however client does not want a Venus.

Below is screenshots when we lose comms.

[image]

[image]

Any help would be appreciated.

Regards