Craig Botha

Hi Steve, Yes. Also getting random error 12 when in grid tie with backup mode.

Hi. Did you get this resolved?

Mustek are refusing to help and share the firmware. We now have to remove the units from the premises and ship them to Mustek so they can do the upgrade. Beyond real.

Difference between the two inverters in Watch Power. One with the BMS cable connected. The other without.

SL showing error 61 relating to BMS coms issue.

HS with BMS connected

Hi All I recently upgraded from 3 x Axpert 5kva units to 2 x SOL-I-AX-8M. Issue 1: where can I download the correct firmware for Inverter and that removable panel on the front? I'm struggling to confirm if SOL-I-AX-8M its an Axpert Max or King. Reason being, I suspect some of the issues below may be firmware or removable panel firmware related. Issue 2: (Partially Fixed) Pylontech BMS was not being recognised, after many attempts managed to get the correct cable made and connected to the HS inverter. Battery hexagon is now flashing on the HS inverter where it is directly connected. I suspect it may be related to issue 3. But the SL inverter still shows error 61 which is when setting 05 is on PLY and it cannot communicate with the BMS. I thought because they are parallel the errors would clear on the SL inverter. Issue 3: Units are in Parallel but displays are showing different load readings and battery charge levels. They are definitely operating in parallel because changes made on one are being replicated to the other. They also have HS and SL on the front panels respectively. Issue 4: I had SMH connected to the old Inverter but not sure how to connect the Pi to this inverter. When I use a standard mini USB it kills the removable panel and I have to reboot it. (Resolved, faulty Mini USB cable) Issue 5: Online UPS's are humming and buzzing like crazy when running on Solar (SUB) or full on Battery. Line interactive UPS's are fine. Any help will be greatly appreciated. I will share a few photos tonight.

Thank you @Coulomb

Thank you, it is clear now. For confirmation, If I was to run just two strings and wanted to add a 500w wind turbine to the system, I am correct in saying that it would not be able to connect into the 3rd inverter. Rather, I would have to use the turbine connected separate charge controller, then that separate charge controller connected directly to the battery banks. My fear is "confusing" the inverters if there some form of sensing on the inverter charger controller? Thanks again.

Good Day all, I'm sure I am not the first to ask this but I did go a few pages deep and search to try and find the answer - with no success. Overview of what I have: 3 x SOL-I-AX-5NB in parallel 8 x Vision 200Ah 12V Deep Cycle AGM Battery (6FM200Z-X) 48v (series & parallel) 18 x 330W GCL Solar PV 72 Cell What I would like assistance with is, The manual says Common AC input across all 3 inverters, common output between all 3 and then common battery. what is a little contradictory in the manual is the PV, do I need to split into 3 strings of 6, with each string powering an inverter or combined PV into one combiner then split the combined PV between the 3 inverters. Thanks in advance.