question

sinbad avatar image
sinbad asked

CCGX intermittently losing comms with BYD B-Box

Hi all

I've noticed recently, while running on batteries with load > PV input, ESS mode, grid on, that the system seems to lose comms with the batteries for a few seconds every now and then (a few times an hour). During this state, the system pulls the load directly from the grid (as I guess it thinks the batteries are flat/nonexistant). Then comms comes back and the system runs off the battery as expected (So I get regular spikes in my grid usage).

CCGX v2.40

MultiPlus 48/5000/70-100 firmware 433
BYD B-Box Pro v4.22

SmartSolar 250/60 v1.42

System is about 6 months old.

Cable from B-Box to CCGX is maybe 1.5m max.


This is relatively new behaviour...

CCGX Color ControlBYD
screenshot-20191220-062821-comandroidchrome.jpg (187.0 KiB)
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2 Answers
mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·

Hi @Sinbad, this sounds very much like the issue introduced with the release of Venus OS version v2.40 last week. Which has been fixed in v2.41, released just now:

https://www.victronenergy.com/blog/2019/12/20/venus-os-v2-41-fixing-byd-communications-and-more/


Thank you for reporting. Could you do me a favour, and confirm here that installing v2.41 fixes it for you?

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sinbad avatar image sinbad commented ·

This sounds promising

Update done. I will monitor and provide feedback - thank you!

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sinbad avatar image sinbad commented ·

Hi

Confirmed, batteries no longer disconnecting. Thanks! :D

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ejrossouw avatar image ejrossouw sinbad commented ·

Super. So the change was a firmware update.:) Problem solving 101

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ejrossouw avatar image
ejrossouw answered ·

May I suggest you first search the forum as this or similar topic has been discussed before.

https://community.victronenergy.com/questions/14576/byd-losing-comms-to-color-control.html

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sinbad avatar image sinbad commented ·

I did see the link you posted before I asked this question. The one you refer to seems to imply that comms are lost permanently until you power cycle the CCGX (which is a different symptom to what I have) and it refers to very old firmware compared to what I am running.

I am hesitant to just apply firmware, in an attempt to resolve this, without expert opinion that this is indeed an issue with my particular versions.

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