Started playing around and testing how well a solar array on my property would work last April, bought 2 Victron Energy MultiPlus-II 48/5000/70-95 120V inverters and hooked them up is split phase. Everything is working great so I went to expand the system to make things almost entirely off grid.
Bought 4 more and when setting up got Error 25. In the end, turns out at some point in the last year there was a change. The 4 new inverters were “comp id b” and the originals had no comp id, or “comp id a”. Trying to get help from Victron just forwards me to a 3rd party sales rep who told me there was nothing that could be done and I would need to buy 2 more. They arrive a few days ago and I open the box and am preparing to install them and ta da! “Comp ID c.” Incompatible.
I have never had an issue with the company I bought them all from, they have always been beyond helpful and have no doubt they will make things right. However, is there anything that can be done on my part or possibly a way to contact Victron? The little information I have found suggests a change of comp id is a change of hardware, not software.
Do you get an error? Can you make a screenshot?
I never heard of a “comp id”.
What matters is the product ID. for the MP-II 48/5000 120V it should be 2729 (very early models have 2723).
What are the product numbers of the devices? Should be PMP482505110 or 12 for your model (not sure if there is a 12 model available for the 120V version).
If the PN is the same than also the ID should be the same.
What are the serial numbers starting with HQ followed by 4 numbers.
First zwo numbers are the production year and the second two are the production week.
All 8 of them are 2723, the the comp ID issue will not let me assign them in any order. The part numbers are all the exact same, PMP482505110 and the firmware is all updated to the latest.
Actually reading the VE Error code more closely. If I had 3 of each, it should work… but I have 2, 4, and 2.
Hmm…
I never noticed that on one of our 230V units, I have to take a closer look next time.
Can that be also found on the box or only on the unit itself?
Actually it’s helpful.
It’s not recommended to mix old and new units together on one phase, this can cause load imbalances between them.
The configuration should work though.
What is your planned setup?
The C seems to be the newest so it shouldn’t be a problem to get more of them.
B is not too old and should also be possible to get.
But you will not find any new “A”.
I am just trying to have a split phase system to power my house. 3 inverters on each phase. I have the 4 “B’s” hooked up right now and they are doing just fine, but I have to be kind of careful what I have running at the same time.
Still no reply from the people I ordered from other than acknowledging that I contacted them… getting pretty unnerving.
As for why the Comp ID has changed, I saw some articles about now meets UL such-n-such in January. I can only assume the changes have something to do with that.
My experience? 6 months of absolute hell. Had to cancel payment and threaten to sue before they even acknowledge I existed.
Long story short, not compatible. Every inverter on the same phase has to be the same comp ID. For a bit while this was slowly being sorted I had The 2 "a"s on one phase and 2 "b"s on another. Right now all "c"s. But as it was a new purchase, rather than years ago…
With that said, an inverter with no comp ID should be considered comp ID “a” per their manual and you should not have a problem.
Hey, I know this is months later but I have the same issue. What letter ID do you need because if you want why don’t we trade? I have a letter a or B that I need to match they’re brand new. I just hung them on the wall and I made the same mistake. Let me know if you’d be interested in doing a swap.
Well, you don’t need the same letter inverter to do split phase. That was the reason why my system worked until now because I had an A and a B on two different phases …you wouldn’t be willing to make a deal/trade me your a for my B.? a single A and a single B unit can absolutely be put in a split phase configuration that’s how my system was until I wanted to add to it
guystewart
(Guy Stewart (Victron Community Manager))
15
First, my apologies for your experience with the introduction of the Comp ID system to date. What has happened in your case was absolutely the opposite of our intention with this change, and we have just released guidance to our distribution and repair network so that it should not occur to anyone else again.
The good news is today an email was sent out to all distributors who have purchased an affected model with an official tech note that explains the Comp ID model situation, how to identify Comp ID from a serial number, how to know which Comp ID models they will receive when ordering a new product, and how to resolve the incompatibility issues if they arise (most typically repairs, replacements and system upgrades).
I will not articulate the full details of the policy here, please contact your dealer for those details, however I will say that it is now Victron’s clear and unambiguous policy that the customer should not be inconvenienced or expensed where there is a Comp ID incompatibility under normal use cases (repair, replacement and parallel upgrades).
I hope with that, it all goes much more smoothly from here.
However, if there are any further obstacles related to Comp ID, please @ mention me and I will do my best to assist with making sure everyone (customer, installer or distributor) has the information they need to process these smoothly.
