Faulty Cerbo GX devices

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question

jamesstubberfield asked Aug 11, '22

Faulty Cerbo GX devices

Is anyone aware of a manufacturing defect affecting a recent batch of Cerbo GX devices, especially when used on 48V systems?

We have 2 separate customers, who have both reported 2 failures each, of Cerbo GX units when attempting to power them up from the 48V DC bus. The inline fuses remain intact, and the polarity is correct. One user reported hearing a 'pop' from the upper right corner of the unit, when they connected the power lead.

Ideas?

cerbo gx fault

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Jasbir Rathor commented · Dec 21, 2022 at 06:42 AM

While checking my 48 volts system ,I was checking only DC part of my of system . When I powered up the DC part BMV 712 smart shunt and GlobalLink 520 had no problem powering up but Cerbo GX did not power up. I have informed the supplier and waiting for the update.

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mvader (Victron Energy) answered · Aug 12, 2022 at 02:26 PM

Dear all, yes there is a known issue on it. To keep it brief: currently we’re working (hard!) on a solution. Far not all 48V systems are affected; more news next week.

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Juha Tuomala commented · Aug 30, 2022 at 07:04 AM

@mvader (Victron Energy) given that I've purchased one recently, how do I find out if that is one with the fault? Using it with 12V but if it's out of spec, I'd like to know.

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Alexandra ♦ Juha Tuomala commented · Aug 31, 2022 at 04:35 AM

@Juha Tuomala

If you would like this answered quickly contact the seller/distributor you purchased from.

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Modifications Space

Node Red Space

Answer 1 · 2022-08-12T08:30:49Z

jeanmarie answered · Aug 12, 2022 at 08:30 AM

it append to me 1 week ago with a Cerbo that was powered up for less than 2 weeks (SN:HQ2214....)

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Answer 2 · 2022-08-12T08:39:21Z

scraggs answered · Aug 12, 2022 at 08:39 AM

I had similar the end of last year, a loud pop that appeared to come from the opposite end to the power inlet, it had been running fine for a week or so.
Out of interest was this running Wifi or via ethernet cable ?

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jeanmarie commented · Aug 12, 2022 at 10:07 AM

for me it was with both links, but ethernet provided by a wifi bridge powered on the same source than the Cerbo

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Answer 3 · 2022-08-12T13:13:11Z

Meine_Energiewende answered · Aug 12, 2022 at 01:13 PM

same here ... we have also 2 customers with 48 Volt setups and "popped" cerbos. Polarity was also correct.

Jens

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Answer 4 · 2022-08-12T17:46:27Z

Juha Tuomala answered · Aug 12, 2022 at 05:46 PM

I have 48v system but i put it into 12v supply and it works.

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nickdb ♦♦ commented · Aug 30, 2022 at 07:08 AM

Just requires a 100uF 100V low ESR cap across the cerbo's power connector to prevent the issue.

If it hasn't popped already, the probability is low for a recurrence.

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Juha Tuomala nickdb ♦♦ commented · Aug 30, 2022 at 07:23 AM

Victron should have its serial since it's connected to VRM and my contact information. I assume that they do something about it if its defected.

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Answer 5 · 2022-08-26T20:46:15Z

christian-cavallin answered · Aug 26, 2022 at 08:46 PM

Same here. For weeks on 12V perfect. Rebuild to 48V kills the Cerbo.

S/N: HQ2201MTP**

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Alexandra ♦ commented · Aug 28, 2022 at 08:25 AM

@Christian_Cavallin

It will be replaced. Just send it in for RMA.

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Answer 6 · 2022-08-31T08:02:12Z

baxter answered · Aug 31, 2022 at 08:02 AM

Victron Technote in this thread

https://community.victronenergy.com/questions/152325/cerbo-gx-geht-standig-kaputt.html

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marconi commented · Jan 07, 2023 at 04:22 PM

So why does Victron not react properly and still sells faulty ones? My Cerbo is defect after a reset and I desperately need immediate replacement!!! How can a developement team not see that a Diode and electrolyticCapacitor on the PSU input are missing??? (Lesson No.1 in electronics) Another issue is the missing 5VDC/DC inside the LYNX just to see the LEDs and where is a straight communication Bus to monitor the fuses - very strange! Please victron offer a proper solution to all the "victims"... imagine you´re on a ship somewhere on the ocean losing power!?... no communication and navigation - this could be very dangerous and maybe even deadly!!!

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Answer 7 · 2022-12-19T17:10:57Z

obyhun answered · Dec 19, 2022 at 05:10 PM

The seller I purchased from proposed to replace my Cerbo, it will take over 2 months. I cannot wait and decided to buy a new one. They just received a new batch of Cerbos, all SN starting from HQ2219xxxxx. Looks like they (Victron) are still pushing these faulty devices to the customers knowing they're faulty.

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chergyro commented · Dec 19, 2022 at 07:56 PM

Any official news on this @mvader (Victron Energy)? I've got a faulty one too and would like to get replaced it...

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jeanmarie commented · Dec 20, 2022 at 09:28 AM

They are faulty, yes but look at the thread : they provided the solution to avoid damaging those units: just either add a capacitor, as suggested, or power it on 12V and you'll be able to enjoy your Cerbo for years.

Or you can ask for a replacement but this will take time during which you won't be able to have this CerboGX available.

Up to you....

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