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…

@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.

Actually they recommend not auto updating. The 3 times firmware is recommended for update Initial install Troubleshooting steps If a new feature is required by the system For all the new toys and features you need the new toys.

So have swapped around and now the Multi RS drops out sporadically. No battery Drop out on can port 1.

The CAN2 port of Cerbo MK2 is having problems. I have the feeling that it’s a hardware problem exacerbated in some situations by software usage / load… Probably the developers will try to solve / avoid the hardware problem in software, but from my experience this kind of situations will end in a n…

Hi Guy, does the VE.Can port troubleshooting process also apply for Error #67 at systems with standard CERBO running Firmware e.g. 3.3. The unit: 1pcs Multi II 10000 + 1pcs. Smart Solar MPPT 450/200 (on VE.Can) with Pylon Communication on CAN Bus communicating with Cerbo. Every 50 to 70days the…

Try it and please report back, I would expect it will help.

Hi, Maybe this is related to a different issue but I am having a weird problem with Pytes Battery and new Cerbo MK2 I had the Pytes Battery in use with a Cerbo MK1 without any problems. Then I took the same battery and installed it to a new system which uses a Cerbo MK2. At the beginning it worked…

Hi Stewart, I did yesterday firmware update and VECan position 1 with Terminal block in VECan2. We did also a better shielded CAT cable. It works well so far. As Error 67 was intermittent (every 80 to 120days) we now will wait. I keep you posted. Thank you

Hi, I can (sadly) confirm the issue. As in my previous post stated, the Cerbo MK2 has an hardware issue. I tested the same battery with various Cerbo GX and here is the result: 1st Cerbo GX MK2 Batteries stay in IDLE 2nd Cerbo GX MK2 Batteries stay in IDLE Cerbo GX MK1 Batteries working charge an…

Error #67 BMS Communication lost

DIY

guystewart (Guy Stewart (Victron Community Manager)) 11 January 2025 08:56 22

Hi all,
Apologies for the hassle and the delay in responding.
The good news is we have found the solution; see here;

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Error #67 BMS Communication lost

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