Fronius Primo 5.0.1 voltage pulsating problem after new firmware (MicroGrid Multiplus 5000)

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frasinburg asked Feb 5, '22

Fronius Primo 5.0.1 voltage pulsating problem after new firmware (MicroGrid Multiplus 5000)

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UPDATE!

The problem was the new Fronius Primo firmware version! All you have MG50 setup coupled with Victron inverters please avoid doing firmware update to Fronius inverters to fro32482.upd version, or ask Fronius to downgrade to a version from late 2020 via SolarWeb interface.

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I have a big problem with a Micro Grid system (OffGrid, Multi 48/5000 with Fronius Primo 5.0.1) MG50.

A few days ago I did a firmware update on Fronius and since then the AC voltage fluctuates a lot (see the image on the attached graph).

At 12:11 I did a firmware update on Fronius and since then the AC voltage is very unstable.

The inverters also make a pulsating sound.

The Multiplus has latest firmware version 2624494, Fronius Primo has the firmware version fro32482.upd (inverter), 3.20.6-1 (data source).

Please help me, it fluctuates so much that the light bulbs in the house flicker when I start the Fronius.

When only MultiPlus works then everything is ok.

Does anyone have an old Fronius Primo 5.0.1 firmware version? The new one completely ruined my system.

Thank You!

Fronius

screenshot-2022-02-05-at-095222.png (273.5 KiB)

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klim8skeptic ♦ commented · Feb 05, 2022 at 08:36 AM

You forgot to mention what firmware the GX is running?

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frasinburg klim8skeptic ♦ commented · Feb 05, 2022 at 08:49 AM

Color Control GX Firmware: v2.82~2

(Yesterday I did a firmware update for Color Control GX, but even with the old version and with this new one, the problem persists.)

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sunnyday333 answered · Feb 08, 2022 at 09:05 PM

Hi @frasinburg

ok, I will ask fronius support tommorow, which version of firmware it can be and then I will send it to you.

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frasinburg commented · Feb 08, 2022 at 09:12 PM

Thank you very much!!! :)

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sunnyday333 frasinburg commented · Feb 09, 2022 at 03:28 PM

Here you are. Can you try it?

fro31330.upd.zip

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fro31330upd.zip (11.1 MiB)

frasinburg sunnyday333 commented · Feb 09, 2022 at 05:05 PM

I will try!

Thank you a lot!

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sunnyday333 frasinburg commented · Feb 11, 2022 at 06:18 PM

Hi @frasinburg

is it better, or you need other FW?

Thanks

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frasinburg sunnyday333 commented · Feb 11, 2022 at 10:06 PM

Hello @sunnyday333

Thanks so much for the firmware!

When I tried to install it, I realized that Fronius had downgraded the firmware about an hour before. So I stopped using it and in the meantime I got sick of Covid19 :(

But YES, the problem was the new Fronius Primo firmware version! All you have MG50 setup coupled with Victron inverters please avoid doing firmware update to Fronius inverters to fro32482.upd version.

My system works now very smooth :D

Thank you guys for helping me!

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smokingbro frasinburg commented · Mar 21, 2022 at 01:08 PM

Hi frasinburg, Can you please advise what firmware Fronius downgraded too? In a similar situation being MG50 offgrid and was about to upgrade...

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popnic commented · Jun 17, 2022 at 09:55 AM

@sunnyday333

Have the same voltage fluctuation issue in my micro grid setup when is offgrid and the energy produced by inverter is close to the energy consumed by the load

In my attempt to change the firmware from 33151 to 31330 of my Fronius Primo 5 I got error 743 - firmware update error and 735 - firmware does not match with the device or firmware too old.

Is there other firmware available that can solve this issue?

50 Hz, 230V, Romania, Europe

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sunnyday333 popnic commented · Jun 17, 2022 at 12:11 PM

Hi @popnic ,

Nowadays I'm running this FW without any problem in my MG50 setup:

fro32071.upd.zip

you can try it.

If you have any problem with the Fronius inverter don't hesitate to contact Fronius support, they will also help you with the correct firmware without any problem.

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fro32071upd.zip (8.8 MiB)

popnic sunnyday333 commented · Jun 17, 2022 at 09:02 PM

Hello @sunnyday333

Thank you for reply and tank you for the firmware file.

Unfortunately the firmware is still not accepted by my Primo.

Error messages are the same #743 and #735 as with previous firmware.

BTW My Primo serial number is 33328136

Contacting Fronius it should be the right way, it should be easy and simple but...

I'tl Fronius site direct me to a local agreed installer who don't answer the phone, and other installer says that is taking care only for installations he made.

Finally I got one distributor/installer who want to help me but I think that he will charge me for that.

I am wondering how the Fronius support is working in other countries. Maybe it works fine also here. Maybe I am doing something wrong...

Thank you again.

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Answer 1 · 2022-02-05T09:03:03Z

marekp answered · Feb 05, 2022 at 09:03 AM

@frasinburg

I do not know what changes in Fronius settings after FW update, but did you check if Fronius is still setup the way it was before the last update?

Is it still at MG50?

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frasinburg commented · Feb 05, 2022 at 09:05 AM

Yes, Fronius settings are unchanged - MG50.

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marekp frasinburg commented · Feb 05, 2022 at 09:22 AM

@frasinburg

Found this on the net

https://www.fronius.com/~/downloads/Solar%20Energy/Technical%20Articles/SE_TEA_Guideline_Fronius_SnapINverter_Software_Update_EN_US.pdf

There is something like this in it.

Did you follow it?

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screen-shot-2022-02-05-at-101946-am.png (81.2 KiB)

frasinburg marekp commented · Feb 05, 2022 at 09:29 AM

I try and come back!

thank you!

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marekp frasinburg commented · Feb 05, 2022 at 09:37 AM

@frasinburg

Found also this here:

https://www.victronenergy.com/live/ac_coupling:fronius

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screen-shot-2022-02-05-at-103558-am.png (50.0 KiB)

frasinburg marekp commented · Feb 05, 2022 at 09:41 AM

Our Fronius Primo is produced in 2020.

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marekp frasinburg commented · Feb 05, 2022 at 09:46 AM

@frasinburg

You performed the FW update, so the original FW was replaced.

Are you sure that the new FW is of that "flickerfree" variety?

I do not know, just asking.

Maybe contacting Fronius service is good idea now.

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Answer 2 · 2022-02-05T12:14:19Z

frasinburg answered · Feb 05, 2022 at 12:14 PM

UPDATE!

Fronius firmware reinstalled and selected again MG50.

Nothing helps :(

Does anyone have an old Fronius Primo 5.0.1 firmware version? Maybe i can restore the system.

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Frank commented · Aug 24, 2022 at 03:08 PM

did you get the voltage flicker to stop , as im having same issue

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Answer 3 · 2022-02-05T12:34:20Z

marekp answered · Feb 05, 2022 at 12:34 PM

@frasinburg

I would suggest contacting Fronius service.

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Answer 4 · 2022-02-08T08:12:47Z

sunnyday333 answered · Feb 08, 2022 at 08:12 AM

Hi @frasinburg ,

I want to ask if you managed to solve the described problem?

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Answer 5 · 2022-02-08T09:51:25Z

frasinburg answered · Feb 08, 2022 at 09:51 AM

Hello,

I was not able to solve the problem, but the problem definitely appears from Fronius Primo 5.0.1 (MG50 setup) after the last firmware update because I tried with another inverter (other than my MultiPlus) and the voltage fluctuates as well. I asked the Fronius dealer to get me an older firmware version but I still haven't answered.

I don't know what to do, it fluctuates between 210v and 260v.

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Answer 6 · 2022-02-08T14:42:26Z

sunnyday333 answered · Feb 08, 2022 at 02:42 PM

Hi @frasinburg ,

Today, the fronius service downgraded my firmware to version fro32450.upd to see if it helped, but voltage peaks are still present in offgrid mode :(

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Answer 7 · 2022-02-08T14:58:37Z

frasinburg answered · Feb 08, 2022 at 02:58 PM

I think this firmware version is still too new, that's probably why it still has problems. I used the inverter with the firmware version end-2020 only off-grid and it worked very well, but there is no log dated with the firmware versions and the changes made by fronius.

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Answer 8 · 2022-02-08T20:56:11Z

sunnyday333 answered · Feb 08, 2022 at 08:56 PM

Hi @frasinburg,

Can you tell me exactly which firmware version you have deployed? I can ask directly from the fronius service center and then send it to you.

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Answer 9 · 2022-02-08T21:00:34Z

frasinburg answered · Feb 08, 2022 at 09:00 PM

Hi @sunnyday333

Now I have the fro32482.upd version (it's the one that's causing problems) but I don't know what version I had before, it was definitely from the end of 2020, before they made changes to the MG50 setup.

Thank You!

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Answer 10 · 2022-11-09T10:06:08Z

Rob Duthie answered · Nov 09, 2022 at 10:06 AM

Hi All

Installed a Fimer inverter no issues with flicker at all. when setup for off grid mode.

I have a have Fronius Primo as well flicked real bad in MG50 mode with new software update fro 33350 which had MG50-60 fixes didnt not work at all worse than ever?

Regards

Rob D

NZ

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scraggs commented · Nov 23, 2022 at 05:19 PM

@Rob Duthie I uploaded 33350 to my Primo 8.2 yesterday and have had nothing but trouble since, lights flashing and garage door randomly stopping.

It appears to happen when the solar PV watts on the Fronius is around the same as the AC out, there is also another issue with a very weird kind of buzzer when an array is isolated and then turned back on.
I have had this mildly with the light with the previous firmware now and then but nothing like this.
I have spoken to Fronius today about it and they are now looking into it, I have asked about doing a rollback as I am going to have to leave the Fronius turned off until solar is well above ac use.

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20221123-115943.mp4 (13.3 MiB)

Answer 11 · 2023-09-29T01:36:15Z

angus-parkinson answered · Sep 29, 2023 at 01:36 AM

Hi @sunnyday333

You don't happen to have fro30310.upd that you could share, please?

Thanks.

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Answer 12 · 2024-03-29T04:45:57Z

Rob Duthie answered · Mar 29 at 04:45 AM

Use the USB download way.

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Answer 13 · 2024-03-29T11:49:43Z

smueff1970 answered · Mar 29 at 11:49 AM

i got this error with the USB way

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Answer 14 · 2024-03-29T17:51:05Z

smueff1970 answered · Mar 29 at 05:51 PM

Now i see there is a new firmware from fronius avaliable fro35020.

In the Changelog:

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Microgrid MG50 & MG60 - inner maximum frequency limit values have been increased from 52.8 Hz to 53.1 Hz.

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The default Values of ESS Frequencies are

start reducing 50.20 Hz

Output reduce to a minimum 52.7 Hz

Disconnect at 53 Hz

if I understand correctly, this was not previously possible if the limit for fronius was 52,8 Hz.

has anyone tried this to see if it solves the problem?

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Answer 15 · 2024-03-30T11:39:20Z

smueff1970 answered · Mar 30 at 11:39 AM

Hi,

today i analyzed the matter a bit more and i think this is not only a fronius problem.

i see that my charge voltage at the moment ~52V and current is jumping.

also the current on the DC Bus is jumping and also the Current on the AC site between fronius and victron is jumping.

so i can also see that the frequency is jumping that is be generated from victron, see here.

The question is why does the ESS change always the frequency ? The frequency is changed also every ~ 200ms. So fronius will also change the power.

this looks like ... perhaps ... a problem with the control algorithm in the ESS.

Thomas

bildschirmfoto-vom-2024-03-30-12-26-09.png (357.3 KiB)

bildschirmfoto-vom-2024-03-30-12-28-19.png (596.4 KiB)

bildschirmfoto-vom-2024-03-30-12-27-35.png (617.0 KiB)

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Answer 16 · 2024-03-31T12:37:46Z

smueff1970 answered · Mar 31 at 12:37 PM

i received a tip from another forum and i set now the parameter "Normal Power Change Gr." => Up to 0.3 on the Fronius. Now it increments the power very slow and i didn't run in a 105 error. the pulsation seems also be solved.

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Answer 17 · 2024-03-31T20:31:29Z

smueff1970 answered · Mar 31 at 08:31 PM

I found today, that Fronius have the defaults Changed. For Example: Enable Limit (for Power reduction) is in 33500 => 51 Hz. On the Victron site 50.2 Hz. In older Fronius Relases its 50.2 Hz.

Also for the Disable Limit Max is in 33500 51 Hz, in Older Releases 50.2 Hz.

I thinks thats on point of the Problems. Victron starts with Reduction and increases the Frequency and Fronius ignore that to 51 Hz.

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Fronius Primo 5.0.1 voltage pulsating problem after new firmware (MicroGrid Multiplus 5000)

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Fronius Primo 5.0.1 voltage pulsating problem after new firmware (MicroGrid Multiplus 5000)

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