Forecast wrong after hardware change

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aaxcie asked Sep 7, '23

Forecast wrong after hardware change

Hi,

I started with just a Fronius Inverter and had 2 solar fields connected (8.5 kWp and 5.1 kWp).

I then moved the 5.1 kWp field to a RS450 charger. Since then the forecast seems to think tht I added an additionl 5.1 kWp to my installation and the solar forecast is about 25% to high.

Will this fix itself over time or is there any way to reset the historical data?

Thanks!

VRM solar forecast

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Alexandra ♦ commented · Sep 07, 2023 at 06:14 PM

Did you delete the second/removed fronius from the devices list?

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aaxcie Alexandra ♦ commented · Sep 07, 2023 at 06:31 PM

No, i did not as the 8.5 kWp field is still active there. But i will try it now.

Update: It found the Fronius again and showes the same wrong forecast for tomorrow.

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Michelle Konzack aaxcie commented · Sep 08, 2023 at 02:23 AM

Did you deactivate the second tracker in the Fronius?

(I assume, the Fronius communicate with your GX)

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aaxcie Michelle Konzack commented · Sep 08, 2023 at 05:46 AM

Both trackers in the fronius are on. Before I had 2 x 4.25 kWp connected to tracker one. After moving the 5.1 field to the RS450 I seperated the 2 4.25 kWp fields to the 2 trackers in the Fronius.

Should I try removing the whole installation from VRM to reset the data?

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Modifications Space

Node Red Space

Answer 1 · 2023-09-09T09:27:49Z

Guy Stewart (Victron Community Manager) answered · Sep 09, 2023 at 09:27 AM

Hi @aaxcie,

Please try the reset location button for your site location in the VRM site settings, and then set the location again. This should help with resetting the estimation algorithm.

It can still take up to 28 days for a full recalibration.

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aaxcie commented · Sep 10, 2023 at 03:10 PM

Thanks a lot!

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