I have an issue with a couple of units. Both are coming up #67 BMS Communication lost. Am using Pylontech US5000B batteries and Cerbo MK2. Have used Old cerbo model prior to the MK2 with no issue. Have tried; DIP Switch New Cable Another MK2 Cerbo. and calling supplier of batteries, still sa…

Hi all, Apologies for the hassle and the delay in responding. The good news is we have found the solution; see here; [image] 3.50 / 3.51 : VE.CAN losing connectivity to VM-3P75CT (Grid & AC Loads Enphase) New UI We have released Venus OS v3.53 that fixes the Cerbo MK2 VE…

Not sure if that would support the software based input ve.can 2, as the cerbo MK2 doesnt have dedicated BMS input anymore.

i have done every conceivable update that is released, even tried rolling OS back and still get the error. Have also installed the OS Large. The new update appears to clear the error alarm but still logs a fault. Have changed battery and also changed BMS cable. Am using genuine Victron BMS to CAN ca…

To add some information to this thread. Have the same client issue using CerboGX mk2 and Pylontech US5000-1C version. Mk2 was on V3.52 and based on this thread I downgraded to V2.91 to test. The result was that I had a little bit longer packet life coming in from the BMS but this stops after a wh…

Hi All I have a very similar issue that has occurred since update 3.5> onwards. I’m using a CCGX with BYD 2.5 B-Box and have had the system running for about 6 years. I’ve done all the advised fixes with cable checks Firmware Updates to all MPPT’s and Quattro’s etc. As all have said very randoml…

So I have also tried with Pytes Ebox-48100r and i get the same result. It could go a week with no error and then all of a sudden just drop. Definately not battery related. I have no MK1 Cerbo’s either for roll-out

I am using both can ports. One for Multi RS the other for Batteries. Can port 2 for Batteries Can port 1 for Multi RS. Have switched over and had the same issue with PylonTech. Will Try with Pytes Batteries.

[image] Timsalmon@switchedon: CCGX @timsalmon New UI and CCGX should not be used in the same sentence. The CCGX does not have the hardware resources to run the newer firmware. My suggestion is to roll back to v3.4

@thatrickguy Always the device on the can 2 port is the issue?

I agree LX wit that. Victron should really have made users and instalers aware of this before UI was put out there on auto firmware update.

Error #67 BMS Communication lost

DIY

lxonline (LX) 27 December 2024 06:10 14

Are you using the ve can 2 port?

if so there have been a few threads about signal degredation issues affecting its function.

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Error #67 BMS Communication lost

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