Smirresa

The solution Herman proposed definitely solved the 08 (and 04) errors/problems on the Axpert inverters. Not a single error or trip since making the changes in Dec 2020. Not familiar with the Growatt inverters I had the problem on two systems. One with 2 x 5kVA in parallel and the other with a single 5kVA unit. As far as I remember, for the dual system, the 08 error mostly occurred on the master inverter

Experiencing communication problems between an Axpert VM3 5K and the new pylontech 3000C batteries. Previously had the 3000B batteries and there were no issues. Any advice?

Sorry, loud 🙂

No idea. Apparently a load bang when they switched to the inverter supply and then it was dead. I suspect the outputs of the three inverters were not synchronized as they were all set up to run as singles. The weakest one died

Thanks for the help and advice @Coulomb. You are correct, for some or other reason the settings were reset to factory default. Lost one inverter but the other 2 now running fine with the correct settings reinstated

Working on a system with 3 x 5kVA Axperts (Mk1) in parallel. System recently developed an issue where the inverters do not display the master/slave indication. The section in the middle of the LCD where this is displayed is blank for all three inverters. Paralleling and current share cables are all connected and plugged in. Anybody seen this problem before?

@Coulomb Made some changes to the inverter voltage settings in line with your suggestions and it seems to have solved the problem. The inverter now switches on the SOC settings of the ICC. What puzzles me is that the system worked perfectly fine with the old inverter settings for almost a year (approximately 200 battery cycles logged). Is it possible for the Pylontechs' voltage profiles to change/deteriorate over time so that, after 200 cycles, the voltage at approximately 25% SOC is now lower than when installed?

@Coulomb Got an earlier version of the software and testing it now. Had an erroneous switch to grid again this morning (at about 24% SOC instead of the 20% setting). Looks like the battery voltage may have momentarily dipped below my Back to grid Voltage setting of 48V, coinciding with a increase in power draw - refer to attached graph. The graph shows a minimum of 48,5V but the switch happened at that time hence my suspicion as described above.. Any harm in reducing the back to grid voltage to 47V?

@Coulomb Originally set up the system with all the values and settings for Pylontechs as published on this forum - and it worked perfectly for a long time! I will confirm later today that all is in line with the suggestions as per FAQ #2 and will also monitor the voltages when the switching occurs. Is it possible that the battery voltages will change (after being used for a year) to such an extent that settings that used to work no longer do so? Any idea why the switch from grid to batteries is now also higher?

I have 2 x 5kVA (450 VOC) Axperts in parallel with 8 x US3000B Pylontechs and 24 x 380W PV panels, implemented with a Raspberry Pi running ICC software. System worked perfectly for about a year with switching between Grid and Battery/Solar being controlled by the ICC. Been religiously keeping my ICC software up to date and downloading a new version the moment it becomes available. I recently developed a problem where the system does not switch based on the battery SOC anymore. My ICC settings for this are 20% SOC back to grid and 50% SOC to Battery/Solar but the system seems to switch at about 34% to grid and 77% to Battery/Solar. This does not make sense to me as I was under the impression that the ICC overrules the Inverter as far as battery control is concerned. The problem only developed after I downloaded version 4.2 of the software but the supplier is adamant that the software is not the problem. Anybody else experiencing a similar problem or know where I can get an earlier version of ICC (below version 4.0)? Any advice will be appreciated

Is the Powerforum store still operational. Looking for a quote on 2 x Pylontech US3000C, 1 set of battery cables and 2 sets of brackets, delivered to Jhb

Did anyone try these batteries? Are they the Pylontechs just branded as Synapse or are they knock-offs? Looking for 2 x 3000C's

Thanks Herman Implemented this solution on two separate systems in two different parts of the country on the 1st of December, when I first saw the post. No error 08 messages on either of the systems since then, despite intermittent cloudy and wet weather. Seems like a lasting solution. If anything changes I will give feedback

Thanks @Coulomb, will try the swap first

I have 2 x 5kVA Axpert MKS II inverters in parallel with 24 x 380W panels (9120W total), 8 x Pylontech 3,5kWh batteries and a Raspberri PI with ICC installed, controlling the system. Last couple of days have been cloudy with intermittent periods of full sun and I am now periodically logging very high (20,000 - 30,000 W) outputs from my solar panels on the PI. Happens in the morning around 9 ish when the sun is breaking through the clouds. Looks to me like a measuring error somewhere as the reported values are 2 - 3 times the installed PV capacity. Anybody seen this before?