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bkburns09 avatar image
bkburns09 asked

Multi Plus-II won't switch at loss of shore power

I have the CerboGX, multi plus-II with a lithium 300ah battery. Everything worked fine at first but then I did a firmware update on all the devices and it reset all of the settings back to default. I was able to get almost everything set back up by downloading the config and using VE Config and reuploading, but I can't figure out how to make it switch at loss of shore power. I have UPS enabled and I'm not sure if I need to be using a virtual switch or not. This is on an RV and when I lose shore power I don't get any DC or AC power. I am not sure if its a setting in the Cerbo GX or the multi plus-II. Any help is greatly appreciated.

Multiplus-IIcerbo gx
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wjf avatar image
wjf answered ·

@bkburns09 What are your settings here? 1715639059726.png


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bkburns09 avatar image
bkburns09 answered ·

@wjf

AC Input 1 - Shore Power

AC Input 2 - No selection

I do also have a generator as well. And the Battery Monitor setting just below those is set to Automatic.

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klim8skeptic avatar image
klim8skeptic answered ·

@bkburns09 is the multi set to "charge only"? via switch, VRM or remote console?

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bkburns09 avatar image bkburns09 commented ·
I believe it is set to "on". Should it be set to "charge only"? I'm not sure what those settings imply.
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klim8skeptic avatar image klim8skeptic ♦ bkburns09 commented ·
@bkburns09 "charge only" will charge from the grid, but upon grid fail the multi will not invert.

When the multi power switch is set to "on" (charge from grid, and auto invert upon grid fail) the status can be changed via VRM or remote console to "charge only" or "off".

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