question

suavek avatar image
suavek asked

Venus started to indicate strange battery voltage (system) after OS automatic update to v2.30

My Venus was auto updated this night at 4:10. After several minutes indicated battery voltage (system) dropped from 13V to around 4V. Moreover, the logging interval has decreased suddenly as you can see in the picture. This Venus is powered by this battery so it should have been switched off due to not enough voltage, but it's still working.

I've checked voltage measured by Smart Solar MPPT 75/15 which is connected both to Venus and the same (the only one in the system) batter and it shows the voltage above 12V and the system seems to be still working - the solar panels charge the battery.

How to fix it?

The logging interval is set to 15 minutes.


Venus OS
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2 Answers
jeroen avatar image
jeroen answered ·

Are you willing to enable remote support so we can have a look at it?

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suavek avatar image suavek commented ·

Yes, indeed the Multi has firmware version 154.. I'd like to enable DVCC but I can't due to old Multi's firmware. Please look at it. The Multi is switched of since a few days so I'm not sure whether it has any i fluence on system battery voltage.

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suavek avatar image suavek commented ·

Have you configured something? Since this afternoon indicated system battery voltage returned to reasonable levels (13V).

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Murray van Graan avatar image
Murray van Graan answered ·

It could be that your inverter firmware is old. If you have DVCC enabled, disable it and see what it does. If that fixes it, you’ll need to update inverter firmware

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jeroen avatar image jeroen ♦ commented ·

No that is not it, DVVC is disabled. It is older firmware, 154.

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Related Resources

Victron Venus OS Open Source intro page

Venus OS GitHub (please do not post to this)