Mowbray85

Hi all. Does anyone have desolate firmware for an Axpert 7.2kW I have broken mine and the new display is for a 5kW unit. Meaning it’s missed second solar input etc

Amazing thank you

Hi all. I have 3 voltronic axpert 7.2kW inverters. All working very well. However, I am struggling to connect the coms to a seplos BMS. Does anyone have a pin out for both units? There is lots of iterations of this online, and I just want to see if it’s worth doing or if I should just leave my Solar Assistant to control everything (as it does now)

Hi there. Have you found anything else wrong with your inverter. I have tested everything I can and can't see anything accept the C40 and C41 capacitor gone

Amazing work and thank you for the great insight. I got as far as digikey here in the UK and there was nothing available at all. But your assistance with a new product number has helped alot. I have sourced and purchased 2 of the capacitors you have recommended. With regards to the capacitors it's was C40 and C41 that had blown, this was due to my error in parallel running mode and creating a high bus voltage fault. I will let you know how I get on with the replacement. Once changed I will connect the inverter via a plug to allow me to ensure it is fully repaired.

Hi I am currently trying to find a replacement capacitor. I am looking to replace both the bus voltage capacitors as I'm not convinced that both won't be gone. I have removed the capacitors and struggling to find where to get some from. Would you have any idea? Part number is: GM2H681MW43551Y

Thanks for all the information. I have removed the inverter and test all resistors, IGBT's and MOSFETs all test ok. It appears to only be the capacitor and main fuse that gone.

I know I had the other 2 set up correctly and in parallel, forgot to change this one and pop it goes! Would of thought the protection would have kicked in first though. Its a lesson learned on me I suppose, however with the number of potential issues I may as well just replace rather than repair.

I'm in the UK britishracinggreen

Thanks for the information, sounds like it would be better to replace the unit. Dooh!!

Hi all, I have 3 voltronic max 7.2 inverters. I made an error during first installation and did not set one of the inverters to parallel mode! As you can imagine, when I sync'd the unit if when into fault for high bus voltage followed by a big pop. I have taken the cover off and can see that one of the large capacitors on the top right have popped. My question is, what other damage will I be looking at? I am yet to fully investigate this as my other 2 units are working fine. I look forward to your help

UPDATE: This morning i flashed the inverters, ensuring the house was empty in case of a power outage. I first started to flash the slave inverter, as soon as the flashing commenced the master inverter shut down. YOU CAN NOT FLASH WHILE KEEPING THE POWER ON IN PARALLEL MODE!! I continued and flashed both devices without fail. the U1 is now 90.20 on both devices and for the first time i can actually produce solar on a cloudy day. thank you for the assistance on this!!

Hi Coulomb. I attempted last night to flash the slave unit however when attempting the SL inverter as the flashing tool opens fault code 72 followed by 32 came up. These fault prevented a flash. I stoped at this point, I will flash today with both units off load and revert back

Thank you for that. I have looked through everything however nothing tells me what to do with the other inverter while flashing. I have 2 inverters in parallel mode. Can I isolate 1 inverter (solar, AC in, and AC out). And flash the inverter while the other one is still running? Or should I isolate both inverters and continue? Everything else seems easy enough

Thank you that's amazing!! My system has 2 units in parallel, please can you share the procedure for flashing them, Do they need to be off, etc

I have the voltronic (voltacon badged) axpert max 7.2kw with removable display

I have the voltronic (voltacon) 7.2kw removable display sorry

Hi there I have a voltronic inverter axpert max 7.2 Please can you share a patch that suits my setup Inverter 1 has a 430voc system connected Inverter 2 has a 240voc system connected Additionally if you have any instructions on how to flash the firmware, this would be great!

Hi there, I have the voltronic axpert max (same as voltronic) here in the UK and having the same issue. I have 2x inverters in parallel and both stuck at 90V One inverter has 440VOC string and the other has 270Voc string. I have noticed isolating the solar and re-energising makes the MPPT kick in at full system voltage. I have no experience with patching firmware but I would expect that this is the issue. (Hence finding this thread). What's the best solution for this please, I'm half tempted to place a MPPT regulator directly to my batteries!!