We had a heavy storm last night and sometime during the night I woke up and the power was off. 

I switched back to the grid but two of my three Axpert MKS II 5K -- PIP-5048MG (SOL-I-AX-5NB) inverters now shows error codes alternating between NE 80 and NE 82 continuously. 

The third inverter seems fine.

Any idea what these error codes mean?  I cannot find them in the manual.

Thanks

Johann

 

Edited January 14, 20223 yr by jcdup

7 hours ago, jcdup said:

We had a heavy storm last night...

I'm starting to dislike the lightning too. I've been fixing one of my inverters for weeks now.

Quote

 

two of my three Axpert MKS II 5K -- PIP-5048MG (SOL-I-AX-5NB) inverters now shows error codes alternating between NE 80 and NE 82 continuously. 

Any idea what these error codes mean?  I cannot find them in the manual.

 

Depending on how old your manual is, you either have to scroll down to the paralleling section, or you have to refer to a totally separate paralleling guide manual.

Fault code 80 is "CAN fault"; the connection between master and slaves is CAN bus.

Fault code 82 is "Synchronisation loss". One of the main things that the CAN bus does is to synchronise the paralleled or 3-phase inverters. Without that, it isn't safe to connect the outputs together. Hopefully, the firmware refuses to turn on the inverters in that case.

"NE" refers to a state that is neither Master nor Slave yet; it's a NEw machine as far as the network is concerned. So they haven't even sorted out who is master as yet, or if one has declare itself master, the others don't know about it.

My guess is that one or possibly two of your paralleling boards have become damaged, probably due to the lightning that South Africa is legendary for. Possibly the third machine can't see the first machine because of the faulty card in the middle. I'm really hazy on how all that works.

I'd say you need to talk to your supplier to see if they can sell you a replacement paralleling board. With some clever observation and disconnecting of cables, hopefully you can work out which card(s) is(are) damaged. The paralleling "kits" come with spare cables; you may as well replace the cables with new ones, as you don't know if the cable has been damaged. But then, which cable(s) to replace? Perhaps there is a visual indication (some burn mark, perhaps).

Thanks Coulomb.  It turns out that my manual is not too old--I am.

 

I never checked the part of the manual with the parallel error codes.