Jump to content


  • Content count

  • Joined

  • Last visited

  • Days Won


weber last won the day on December 9 2017

weber had the most liked content!

About weber

  • Rank

Recent Profile Visitors

74 profile views
  1. Axpert / Mecer 5KVA model

    See Coulomb's post here: http://forums.aeva.asn.au/viewtopic.php?p=66644#p66644 There are some pretty interesting posts on the rest of that page too.
  2. Axpert / Mecer 5KVA model

    Hi Werner. Thanks for posting. Do not reflash your new 74.10 inverter with any lower-numbered firmware. We don't know if it is possible to reflash your old inverter with 74.10. If so, you would have to obtain the firmware from your supplier. Just in case anyone on this thread doesn't know, 72.70c and 72.60a (and any others with a letter on the end) are not approved by the inverter manufacturer. (They have been patched by Coulomb and I, to fix the premature-float bug, and add some useful features.) That's very useful information that 74.10 with 72.60 gives an error 71, but 74.10 with 72.70c (and so presumably 72.70) does not. Do you know which one was the master in each case? There is a potential problem with using 72.70c in parallel with anything other than 72.70c. The codes used to communicate the value of the maximum total charge current setting [02], between inverters, are offset by 10 amps. In 72.70c, codes 0 thru 14 (on the CAN bus between inverters) represent 0 A thru 140 A. In all other firmware 0 thru 13 represent 10 A thru 140 A. I'm not sure what problems this could cause. It might be safer to use the original 72.70. But then, of course, you will have the premature-float bug on both inverters.
  3. Axpert / Mecer 5KVA model

    Just to add to the confusion, I found this on the MPP Solar web site: That's from: https://www.mppsolar.com/v3/pip-hsms-pf1-series/ MPP Solar may have changed the model names for the PF1.0, but it is apparent from the label photos above, that others have not.
  4. Axpert / Mecer 5KVA model

    Thanks Coulomb, for making me realise that 75.xx is for dual/triple-MPPT machines, not pf 1.0 machines. So 74.10 may not be old firmware, it may be current firmware (but only for pf 1.0 machines). @mohammedbera2, If the supplier or manufacturer tells you that you can parallel a 4000 W (pf 0.8) machine with a 5000 W (pf 1.0) machine, I note that Coulomb and I do not yet have the ability to patch the 5000 W firmware to fix the premature-float bug, because we don't have a firmware update file for it (e.g. 74.xx). For that reason, it might be a good idea to take Coulomb's earlier advice and ask them for a 74.10 firmware update file.
  5. Axpert / Mecer 5KVA model

    According to the labels, the old machine is pf0.8 (4 kW/5 kVA), while the new one is pf1.0 (5 kW/5 kVA). It is confusing that both have the same model number "SOL-I-AX-5M". So I think you cannot load firmware 74.10 into your old machine, and if so, you cannot parallel the two machines. I'm thinking 74.10 is old firmware for pf1.0 machines, not new firmware for pf0.8 machines. I suggest you ask the supplier if you can please exchange the new inverter for one that has "5000VA/4000W" on the sticker, so you have some chance of paralleling it with your old inverter.
  6. Hi @Syed. I know this comes a little late, but we now have patched firmware 75.31a which fixes the premature-float bug for the Axpert Duo and Tri inverters.
  7. Hi @Innocent. If your four inverters are of the kind that have a single SCC each (not "Duo" or "Tri"), and can only do 4 kW/5 kVA (not the "Plus" or PF1.0 model that can do 5 kW/5 kVA), then you should be able to "downgrade" to our patched firmware 72.70c in all of them. But this is entirely at your own risk, and you will have no way to go back to 74.10 if it doesn't work. So I suggest you first upgrade only the one that has the 52.xx firmware and then check that it at least works by itself. Hi @Rik. The firmware you linked to shows version "18.17" and appears to be missing some recent features. Yes, Coulomb cracked the .rar file password. But Coulomb and I have just released our patched firmware 75.31a for the dual and triple SCC models. Please let us know if it works for you.
  8. Axpert 5 kVA patched firmware 72.70c

    You only need it to be COM1 for reflashing SCC firmware. I've been doing a lot of main firmware reflashes in the past two months, debugging the patches. And I find that maybe one time in 5 or 10 it seems to get stuck sending the first packet. I know it's gone wrong when I see it telling me it will take 10 minutes or more, instead of the usual 8 minutes and some seconds. At that point I stop the reflash, cycle the power to the inverter, and restart the reflash. It seems like the inverter was in the wrong state somehow when the reflash started. But it's nothing to worry about. It always reflashes properly after cycling the (battery) power to the inverter.
  9. Axpert 5 kVA patched firmware 72.70c

    Thanks for the kind words, everyone. The main reason for the existence of our patched firmware for the PIP-4048MS is to correct two bugs in the charging code, which under certain very common circumstances result in stopping charge (going to float) prematurely. This results in wasting your available solar resource, not using the available capacity of your battery, and in the case of lead-acid, prematurely ageing your battery. But we have also improved the way the display works. There is now a full description of these improvements, here: http://forums.aeva.asn.au/viewtopic.php?p=66192#p66192