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Lasway avatar image

Fronius Primo not producing power during grid failure?

My fronius primo is not producing power when the grid is not available while it is connected on the AC 1 Out of the victron multi but it stays ON. How to fix this?

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3 Answers
Lasway avatar image
Lasway answered ·

Hi Daniel,


The settings are ok.

Please see remote support is enabled for you.


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Hi @Lasway

According to one of our developers, your Fronius is not configured correctly, sunspec is not available / reachable. Please configure as specified on this page:

https://www.victronenergy.com/live/ccgx:ccgx_fronius

Lasway avatar image
Lasway answered ·
Hi Daniel,


Yes for Joanne Foltz.
Please see additional info bellow


All criteria of zero feed in i have applied, but the fronius is still still showing UPDATE in red as if it needs newer firmware which is not there yet. The victron inverter and data logger appeared to receive right firmware but not the fronius inverter.

I have installed ESS assistant but So far the ''zero feed in active'' is still NO and it still feeds to the grid which is not allowed.


Please see the attached info for Victron firmware and fronius.



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Hi @Lasway

your fronius firmware is ok.

Can you please first double check the Fronius settings?

I've asked an expert and this was his answer:

The two reasons why it might not work are...

1. In the DNO editor on the Fronius, the limiting option is incorrectly set. See 4.3.11 here: https://www.victronenergy.com/live/ess:design-installation-manual

2. The inverter wasn't properly commissioned. Out of the box it only does solarapi (an http/json based thing), and not sunspec. You need sunspec for the limiting to work.

If this is set correctly, then please enable 'remote support' to enable a technician to look into it deeper.

Daniël Boekel (Victron Energy Staff) avatar image
Daniël Boekel (Victron Energy Staff) answered ·

Hi @Lasway

Can you describe your system (do you have a diagram of the system?) and what exactly happens?


is it the 'Joanne Foltz's' site?




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