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.
