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William R avatar image
William R asked

Unable to save tank capacity

I have a Cerbo-S GX with a GX Touch 70 tied to a SeeLevel Soul for tank capacity monitoring over RV-C. When trying to set the capacity on the Touch/Cerbo from 0gal to anything greater, it keep reverting to 0gal upon saving.


The Cerbo-S GX is on firmware 3.11 which appears to be the latest. Anyone else running into this and have a solution?

cerbo gxbug reporttank monitor
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3 Answers
Kevin Windrem avatar image
Kevin Windrem answered ·

It may be that the tank capacity is being set by the Soul, overriding your input on Cerbo. I would try making the capacity change on Soul and see if it sticks.

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Martin (Victron Energy) avatar image
Martin (Victron Energy) answered ·

Hi @William R, SeeLeveL/RV-C does not provide reading/writing the capacity. Meaning that it RV-C connected tank senders only provide the level in percentage.

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William R avatar image William R commented ·

Interesting, I would have assumed this data is only used/saved on the Cerbo to do the calculation based on the percentage the SeeLevel devices reports in. Any chance of that feature being added in?

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Martin (Victron Energy) avatar image
Martin (Victron Energy) answered ·

I'm curious in which videos you've seen this because SeeLeveL does not support this. Nor does RV-C provides messages to configure the tank capacity. Your request is noted, but I cannot promise if and when we are going to implement this.

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