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We have install several RS 450/100,200 MPPT units. However 2 x 450/100 error 200 and 1 x 450/200, same error 200. Only two units out of all the installed units actually worked on startup.
We have checked and double check our installations, they are all according to specifications.
Is anyone experiencing the same issue or is there something we are simply missing?
Surely Victron must be aware of the problem but decided it is more cost effective to keep replacing the units rather than solving the problem. There must be some point where consumer protection steps in and we should be able to recover our time and effort losses when having to return equipment form remote sites.
Finding the root of the problem and a solution for it needs some time.
If it is a hardware problem it needs even more time to change the HW, produce the new devices and deliver them to the users.
The units are faulty.
See error 200 in the manual.
As long as you had no electrically exciting moments during system connect it is not likely anything you did
Many thanks for your response.
Everything went as it should. On start up it came up with the error code 200
That's all.
So faulty. Just return for the RMA with your system and panel config.
I have had one do it randomly, it had been in operation for over three months (before it got the error 200). It was replaced under warranty.
Came looking for this post - having almost never seen an error #200 on an RS450/100 in over a year of shipping them I have now seen four in a week.
Is this a firmware thing or a component degradation thing? All of the units are recent installs - nothing particularly different from the many others we've shipped. Adequate cabling, breakers. Voc is fine, standard batteries...
Think i'll add my 50 cents to this discussion... I've built several systems in the past year, mostly using RS450/100s. Of the 5 that I bought, 3 failed within a month or two of going online (brand new, always updated the firmware quickly). That's over a 50% failure rate on these units, it's a worrying trend this year which I hope Victron can solve quickly.
I've made a fair bit of analysis on the failures and noticed the following points that may help others reading this:
1. Each of the units ran fine until the first cold sunny day where the panels output was higher than previously.
2. Each units would fail quickly - no preemptive warnings, so was not a slow process. (always error #200).
3. The units were in systems where the amps on a cold sunny day were expected to reach 100amps (and thus require current limiting in the RS450).
4. The two units that didn't fail were in identical systems to the faulty units, except that the groups of panels in those working systems are facing in different directions. ie: String#1 is facing East and string#2 facing South or SW and thus would never reach 100amps total current flow. Whereas the failed systems had all panels facing exactly South.
The system spec: String #1: 6x Trina vertex S400w panels, string#2: exactly the same. RS450/100, incoming pv cables all 4mm. Output to Victron distributer, 15kwh Lifepo4 battery bank, dual multiplus II 5kva inverters.
Note: I suspect the failures also occurred when the battery bank was full, the inverters had no loads and thus the overall DC system voltage likely reached its max 55.7v absorption voltage and 55v float voltage. The victron calculator does show that a maxed out float voltage state on the system will put higher loading on the RS450 and seems to infer this will make it get closer to its limits. - that might be something to consider in this case too.
Here the same, one of two RS450/100 is faulty with #200 DC Voltage error after a lifetime of 4 months without a early Warning.
:-(
All Strings connected on the Unit have a short circuit, it do not matter the Power State is On or Off.
Whats going on? Is there a official Statment from Virctron?
I have a system installed with 6 x 450/100s no issues in over a year. it has experienced, hot cold, cloud edge effect and all the seasons.... So far two thumbs up.
Got a replacement under warranty for mine with the #200 error. The new one has been installed to the same setup and working fine for the past week.
@Howard @Dean Perry @Everest15 @RH @jasonsele
What batteries do you use?
We think this only happens in system with batteries with internal BMS and without communication to the Victron system.
e.g. the MPPT is charging at full power an because of a cell imbalance the BMS suddenly cuts off the charging into the battery. That causes a massive overshoot of the battery voltage at the MPPT and damages the MPPT.
A battery with communication sends a signal "please stop charging" and the MPPT has time to "slowly" reduce the charging current.
In my Case i use Pylontech US 2000C ( in all Specefication fine )
Unfortunately, I don't share your assumption. The failure occurred when the SOC was at 65%. The MPPTs were not under full load. The string voltage was 370V and very far from a critical point. At all times there was a connection to the BMS of the pylontechs. Your thesis cannot therefore be confirmed.
I am aware that Victron is aware of the problem. Unfortunately, it is not communicated which batches are affected.
It is obvious that it is mosfet components that have a quality problem. All strings have a short circuit when the error occurs, which is relevant to safety. We are all waiting for an official statement from the manufacturer.
Thank you all for your response that can help finding the cause of the problem.
It seem our observation/conclusion is not the cause.
Maybe you all can add the serialnumber of the faulty devices and the VRM ID of the system so Victron can take a closer look at the moment of failure.
You can make your answers only viewable for moderators:
So in this case, can't we reasonably assume that the batteries are informing the MPPT of a "stop charging" signal to reduce current?
Its worth also noting that these batteries now fully support DVCC on the latest firmware. The first RS450 on this system failed without dvcc enabled (set to 55.6v absorption and 54.9v float within the RS450). Then the second unit was installed after the RMA, and I enabled DVCC on that via the Cerbo touch panel. That one lasted 6 weeks then also failed with DC error #200 and also had to have an RMA. Now just installed the 3rd unit!, lets hope its a case of 3rd time lucky, but I'm not hopeful.
Really hope Victron can find a way to ensure this "overshoot" doesn't occur (some sort of buffer perhaps), if that is actually what is causing the issue.
But considering that we have 2 other solar systems here (almost identical) with the same batteries and same BMS CAN connection and those have not had any issue, it does make me think the primary culprit is having 12 panels all pointing the same direction and reaching the 100amp cutoff, which is not happening on the other 2 systems since their panels point 6 in one direction and 6 in another direction.
I have 3 EG4-LL 48v 5KW batteries with internal BMS. They are communicating to the Victron system though. My solar panels are close to the max voltage at times but this charge controller worked fine for a month before I experienced the error. The replacement has been working for the past week with more sunshine though so I'm sure I have hit higher voltage and amps now than I did previously.
Another MPPT RS450/100 died after only 1 day of operation, Error 200.
Also an HQ2232 unit. My other HQ2139 unit is still working like a champ.
Any feedback from Victron on these issues?
Yes I agree that Victron must come with an update regarding this faulty product. I have had two RS450/100 with this error. Now I'm waiting the supplier to replace the RS450 units.
We have also had two of our four MPPT RS 450/100 units fail in the last week ( 6 days apart) with error #200. They have been installed and running since October 2022. On firmware V1.11 and running on a 48V bank of 3000Ah Narada lead carbon batteries (150kWh). One failed with battery bank fully charged at 55.2V and the other at 60% SOC. String voltages have never exceed 423V, but units operate close to 100A output in sunny weather as in recent weeks. Given that there is no BMS on these batteries it is unlikely to be anything to do with issues of sudden BMS cutoff signals. More likely these units can simply not operate for extended periods near their maximum ratings. Very interest to hear comments from Victron on these faults.
I had two different units fail with error #200. I've replaced it with 2 X 250/60's and they have been fine for several weeks. I gave up on the 450/100. From all the comments it does look like 450/100's with a manufacturer date in the latter half of 2022 appear to be the issue but I'm not sure if it has been resolved in newer units. The 250/60's run pretty hot and I suspect the 450/100 gave me a little more watts from my solar panels so it would be nice to have it workingbut I couldn't sit around waiting.
Hi i take it you have seen this now.
2023-07 - MPPT RS 450-100 reliability issue HQ2216-HQ2236 - rev 1.pdf
Well now I got worried, my still working RS 250/100 is
HQ2236PPYYA
end of the given range, does it mean it is a) affected b) eligible for replacement?
I appreciate 10 year extended warranty but I paid full price for it. @nesswill
"HQ2216 up to and including HQ2236"
Your unit is a and b.
You can get a replacement or extended warranty (you have that automatically).
I saw the bulletin regarding the 100 and it's recall but I have a 450/200 so I didn't pay attention to it, yet now I see this thread with lots of people having problems with 200's.... VICTRON, what's going on, is my 200 a ticking time bomb or is it just 100's that you are recalling?
