MultiPlus-II GX reboots every 2 min on its own: Broken?

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Sebastian Nobody asked Mar 26, '21

MultiPlus-II GX reboots every 2 min on its own: Broken?

Setup: AC-in to grid on L1, no AC-outs, 48 V 10 kWh lithium battery, EM24 grid meter to USB, LAN to router, BMS with 2 wire to T.Sense and Aux2, 4 kW PV on L1

Hi Folks,

two weeks ago my Multiplus-II GX 3k internally exploded (many Power-Mosfets were gone...). My local dealer sent me a new unit under warranty. This was running fine for 6 days now. I copied the exact same setting which where running for more then a year perfectly.

Yesterday during adsorption phase (56.7 V) the unit suddenly rebooted on it own. Then it keeps rebooting every ~2 min. In the evening I disconnected AC and DC and also said "Rebooting" in the menu. The whole night it was running fine.

But today, also around noon during adsorption phase, it started again. I did further tests. The unit reboots even on its own when it's connected to DC only! I disconnected AC, USB grid meter, LAN, 2 BMS conntacts, etc.

I have the feeling that the unit can not handle my Vmax of 56.7 V properly. Or maybe some deep settings are scrambled. I also tested a release firmware with no luck.

Before I need to send the unit back again I want to be clear that this is not just a software issue. Any ideas?

Multiplus-II

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Daniël Boekel (Victron Energy Staff) answered · May 18, 2021 at 01:23 PM

Hi @Heinvdb and others,

good news: there is a fix and it is swapping the GX card for a card with a hardware fix, this can be done by an installer or at the dealer.

Please contact your dealer / distributor for help with this.

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marekp commented · May 18, 2021 at 01:49 PM

Hi @Daniël Boekel (Victron Energy Staff)

Is this fix is a global "recall" of all affected GX models?

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Daniël Boekel (Victron Energy Staff) ♦♦ marekp commented · May 18, 2021 at 02:33 PM

only units that have issues have to be fixed.

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marekp Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 18, 2021 at 02:47 PM

Hi @Daniël Boekel (Victron Energy Staff)

Do all GX boards, in those units, are affected?

If I change the setup and my battery will go over this critical voltage, will I have a problem with my board?

Currently my Absorption voltage is set to 56.5V. (The author of the first post has problem with 56.7V)

What will happen if I set it to 57.6V

Is there a time limit for this fix?

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Daniël Boekel (Victron Energy Staff) ♦♦ marekp commented · May 18, 2021 at 02:53 PM

no time limit.

because not all units are affected, it was difficult to find the cause and took some time.

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marekp Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 18, 2021 at 03:04 PM

Hi @Daniël Boekel (Victron Energy Staff)

Thank you for this reassurance.

When you mentioned the hardware fix, I assumed that all GX boards have a problem. Do you have a unit serial number, or range of serial numbers, that have this problem?

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Daniël Boekel (Victron Energy Staff) ♦♦ marekp commented · May 18, 2021 at 06:52 PM

Hi @MarekP

I don't have that information, and don't know if we have it, maybe we'll know more later.

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marekp Daniël Boekel (Victron Energy Staff) ♦♦ commented · May 18, 2021 at 08:18 PM

Hi @Daniël Boekel (Victron Energy Staff)

Do you have the procedure to test if GX board have this problem?

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rbienert commented · Nov 23, 2021 at 05:10 PM

Hi @Daniël Boekel (Victron Energy Staff). Is this problem still going on? I recently got my Multi II GX and it seems to be doing it also. Voltage shows 59.16.

Thanks,
Rolf

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Daniël Boekel (Victron Energy Staff) ♦♦ rbienert commented · Nov 23, 2021 at 10:48 PM

Hi @rbienert

Yes, your GX is too old. please contact your dealer for repair.

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rbienert Daniël Boekel (Victron Energy Staff) ♦♦ commented · Nov 24, 2021 at 07:29 AM

Thanks @Daniël Boekel (Victron Energy Staff) . Is there a particular case number or reference I can give them?

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Daniël Boekel (Victron Energy Staff) ♦♦ rbienert commented · Nov 24, 2021 at 09:17 PM

Hi @rbienert not really, if your dealer mentions 'GX card rebooting' to Victron repair department they should know enough.

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mise commented · Feb 05, 2022 at 06:40 PM

Hi Daniël,

I seem to have the same problem as described above - my Victron EasySolar-II GX keeps rebooting every 2 minutes or so. The reboot does not affect the output 230V AC. Unlike the instance described by Sebastian Nobody, the battery voltage seems to have no influence on the rebooting. The reboot occurs when using electricity from the grid. I haven´t noticed the problem when using the electricity from batteries. Typically, rebooting occurs when more than 1000 W is consumed (and grid power is used). Do you think the two issues might be related?

Thanks!

Mi Se

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Warwick Bruce Chapman commented · Apr 28, 2022 at 10:23 AM

Daniel we have a 5kVA GX that is doing this now - it is serial HQ2131 - DC bus is only at 55.6-55.8V on FreedomWon. Is this the same issue

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Modifications Space

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Answer 1 · 2021-03-26T16:00:25Z

seb71 answered · Mar 26, 2021 at 04:00 PM

I have the feeling that the unit can not handle my Vmax of 56.7 V properly.

56.7V battery voltage should not be an issue at all.

The cause is elsewhere. Maybe AC voltage spikes?

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Sebastian Nobody commented · Mar 26, 2021 at 07:16 PM

It reboots even when ONLY the DC side is connected. So AC side can't be the problem. What can cause such regular reboots/crashes?

No I am discharging and the voltage dropped below 56 V and no reboots anymore. That's why I think >56 V is with this unit a (hardware) problem. Or some deep settings are wrong? But actually I used the exakt same config from the last unit.

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seb71 Sebastian Nobody commented · Mar 26, 2021 at 08:17 PM

It reboots even when ONLY the DC side is connected. So AC side can't be the problem.

Not now. Sometime in the past.

If the first "exploded" and the second is rebooting, maybe some AC surge damaged both.

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Sebastian Nobody seb71 commented · Mar 26, 2021 at 08:37 PM

OK, understood.

But I don't think this is very likely. I am in Germany and the net is quite stable. The old one was getting too hot over time. Maybe there was a fan/ventilation issue is my idee.

The new problem seems something different. But really strange of course that I am so unlucky...

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Answer 2 · 2021-03-27T09:12:41Z

JohnC answered · Mar 27, 2021 at 09:12 AM

Hi @Sebastian Nobody

Just a thought. In the GX there's a VRM Portal screen that gives a check option - "Reboot the device when no contact". Make sure it's turned off..

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Sebastian Nobody commented · Mar 27, 2021 at 11:04 AM

That's what I checked first. It's off.

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Answer 3 · 2021-03-27T12:02:34Z

Daniël Boekel (Victron Energy Staff) answered · Mar 27, 2021 at 12:02 PM

Hi @Sebastian Nobody

There are some other systems that have this issue also, as we now finally have been able to reproduce it in our lab, hopefully there will be a solution soon.

It has indeed to do with higher DC voltages.

I'll email you.

If there are other users with this issue, please leave a message below an I'll email you also.

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Sebastian Nobody commented · Mar 27, 2021 at 12:15 PM

Thanks for your answer. I am relieved to hear about this from you. I already started to argue with my local dealer as he thinks that it could be my fault.

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seb71 commented · Mar 27, 2021 at 12:43 PM

That sounds very bad.

According to the datasheets it should be able to handle 66V battery voltage, so 56.7V should not be any issue at all, since it is well under the maximum allowed.

Which other models (if any) are affected by this issue? Or maybe only certain batches?

I don't have this issue (Multiplus II 3kVA/48V), but so far the maximum DC voltage I had was only 55.12V (I intentionally set a lower voltage for charging the battery).

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Daniël Boekel (Victron Energy Staff) ♦♦ seb71 commented · Mar 27, 2021 at 04:05 PM

Hi @Seb71

it's models with the GX-card inside, not a lot are affected, that's why we had difficulty finding a unit that did this on the workbench also.

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marekp Daniël Boekel (Victron Energy Staff) ♦♦ commented · Mar 27, 2021 at 04:39 PM

Does this apply only to MP-II GX?

Is EasySolar-II GX also affected?

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Daniël Boekel (Victron Energy Staff) ♦♦ marekp commented · Mar 27, 2021 at 11:27 PM

'models with a GX-card'....so yes also Easysolar.

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jema2000 Daniël Boekel (Victron Energy Staff) ♦♦ commented · Oct 22, 2022 at 12:33 PM

Please mail me too.

Thx

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Sebastian Nobody seb71 commented · Mar 28, 2021 at 12:18 PM

I used to run 4.05 V for each individual cell as max voltage. I have 18650 NMC cells.

Now I will try 4 V => 56 Volt until victron solved the issue. If that fails again 3.95 V etc.

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seb71 Sebastian Nobody commented · Mar 28, 2021 at 12:42 PM

Yeah, sorry for putting you on the wrong path. It was hard to believe that such a low DC voltage could be the issue.

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hankm commented · Apr 07, 2021 at 02:36 PM

Hi Daniël

I have noticed that my device is doing same, it is keep rebooting every 2 minutes. Can you help me? Please email me too

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Daniël Boekel (Victron Energy Staff) ♦♦ hankm commented · Apr 07, 2021 at 09:26 PM

Mail sent!

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Answer 4 · 2021-05-18T11:15:40Z

heinvdb answered · May 18, 2021 at 11:15 AM

Hi,

I have the same problem.

I have a multiplusII 48/5000 GX. With all the latest firmware (482 and 2.66 for ESS). When charging voltage is around 60,5V , the GX reboots every 2 - 10 minutes. After reboot, it shows for 10 seconds or so "ESS OFF"

"Reboot the device when no contact" is turned off.

@Daniël Boekel (Victron Energy Staff), Would my device also been affected?

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Answer 5 · 2022-01-03T22:30:43Z

Was answered · Jan 03, 2022 at 10:30 PM

hi @Daniël Boekel (Victron Energy Staff) ,
my EasySolar-II GX has the same problem, can you please email me ?

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Daniël Boekel (Victron Energy Staff) ♦♦ commented · Jan 03, 2022 at 11:04 PM

Hi @Was

As written back in may:

good news: there is a fix and it is swapping the GX card for a card with a hardware fix, this can be done by an installer or at the dealer.

Please contact your dealer / distributor for help with this.

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Answer 6 · 2022-04-19T15:34:43Z

Nicholas Rotenko answered · Apr 19, 2022 at 03:34 PM

Hi @Daniël Boekel (Victron Energy Staff) , I have the exact same problem with an EasySolar 48/3000 GX. High DC voltage, reboots almost exactly every 2 minutes. Do you need to email me something or do I just contact my dealer? I have 18 Lithium cells. Normal voltage above 60V. Max. shouldn't go above 65.7 Should be able to handle that?

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Answer 7 · 2022-06-12T05:14:46Z

steve-carter answered · Jun 12, 2022 at 05:14 AM

Is this thread still live? Or should I create a new one for my issue @Daniël Boekel (Victron Energy Staff)

I installed a 48v 200Ah Lithium battery yesterday and noticed this rebooting today. As of right now, its not occurring, but the voltage is currently sitting at 54v as the sun goes down. It did it all morning whilst the battery was charging.

Device is an EasySolar II 48/3000 GX.

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Daniël Boekel (Victron Energy Staff) ♦♦ commented · Jun 14, 2022 at 09:03 AM

Hi Steve, best to contact your supplier for a fix.

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jema2000 Daniël Boekel (Victron Energy Staff) ♦♦ commented · Oct 21, 2022 at 08:11 PM

Please email me too

Thx

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Answer 8 · 2022-06-27T20:30:14Z

sgrigor1 answered · Jun 27, 2022 at 08:30 PM

I have the same issue with my EasySolar II GX.

Is there someone that know what hw rework to do? I bought my inverter from someone and I don’t have warranty . What other options do I have?

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marekp commented · Jun 27, 2022 at 09:57 PM

@sgrigor1

If your problem is the "restarting", contact Victron distributor because Victron Service stated that there is no time limit on free repairing of this problem.

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Answer 9 · 2022-10-13T16:51:32Z

jema2000 answered · Oct 13, 2022 at 04:51 PM

I have noticed that my device is doing same, it is keep rebooting every 2 minutes. Can you help me? Please email me too. Easysolar 2 gx

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Answer 10 · 2022-11-06T21:28:58Z

daiko answered · Nov 06, 2022 at 09:28 PM

Hello Daniël,

I think my Easysolar II GX also has mentioned issue. Is the fix still available? I received the system in Februari this year.

Thanks. Gr. Johann

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Answer 11 · 2022-11-07T09:46:40Z

jema2000 answered · Nov 07, 2022 at 09:46 AM

I have the same issue too. Please mail me too. Any fix?

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Answer 12 · 2022-12-29T22:09:34Z

jose-a-portillo answered · Dec 29, 2022 at 10:09 PM

Hello,

I'm experiencing the same issue with my MultiPlus-II GX 48V 5000VA Inverter-Charger while using a generator on AC1 (mostly on high battery voltages during absorb and equalize stages).

FW: v2.92 + 500:

The issue renders the remote console unusable. If you need to make any adjustments, you need to go fast to the desired menu or the screen will freeze and you'll need start over from the Device List screen.

During the reboot, you need to wait until the browser lets you reload the page, then wait until the MultiPlus-II appears on the list, then wait until actual data is displayed on screen (not "Unknown" state).

The sequence is this:

Please mail me too.

Thank you.

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Answer 13 · 2023-02-26T12:41:59Z

johnny answered · Feb 26, 2023 at 12:41 PM

I have the same issue. Should i contact the one i bought it from in Sweden or can i get a board sent to me?

Regards Johnny

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kevgermany ♦♦ commented · Feb 27, 2023 at 06:44 AM

Always contact dealer.

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Answer 14 · 2023-02-27T01:53:21Z

steve-carter answered · Feb 27, 2023 at 01:53 AM

Not sure what happens in Sweden, but in Australia it was return to reseller for repair. Best of luck with it.

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