Saint

i will reheck all dc conncetions for the batteries, i doubt it is the cause though, since it has been working fine for months, i did all the crimps myself with a hydraulic crimping tool, and all 6 batteries goes to a bussbar and from there they are connected with a 100mm dc cable to the battery fused disconnect and then from there to the inverter and all connections still seemed fine i will doublecheck again though to be sure, although i am starting to think it might be the inverter charger that has failed..... 😞

thanx for all the feedback, but to be honest i don't think it is a settings issue, since it was running fine for months.... fyi i had a goodwe before this and also ran it on lithuim with manual voltage settinngs, it doesn't report the soc etc but the rest works fine... so pretty sure it can be done on lithium setting on the ss as well the way i had it set up, the issue is something else... i did try changing it to agm v or agm and setting manual voltages but it also didn't want to charge.... weird thing i since picked up is that like i said their is about a 4 volt difference in the voltage between what is measured on the actual pack and what is reported by the inverter.... other weird thing is... i measured on the actual pack this afternoon, 48 volt, then i measured at the battery connection terminals on the inverter and here is it closer to the actual reading the inverter displays for the battery pack... however this afternoon eventhough the battery voltage was reported lower than the float or charge voltages it did not start to charge the batteries letting me to think it wonder whether there is not perhaps an issue with the actual charger portion on the inverter.... any ideas would appreciated.... i requested the firmware update from SS but it has been two days and nothing happened yet also no comms from them regarding anything quite annoying i must say.....

i will doublecehck the brand, however the specs i have correct....

Hi Steve, They were imported straight from China, it is 48v, 100ah 4.8kw batteries. I have 6 of them in parallel....

Hi Guys, I need help, i have run out of brain on a new problem encountered on a sunsynk 8kw inverter. This is my private install at home, have been running smoothly since january this year, tow or three days ago i start to struggle with batteries. I have a 8kw inverter, with about 11kw of panels installed divided over the two mppt's. I have 100ah lithuim batteries, not supported by the inverter software. No problem, have been running them in lithuim mode, with voltages set manually. I have been monitoring the batteries, ( i have 6 x 4.8kw installed) and the voltage regulation have been accurate to about a 5% or less accuracy fault so i was happy. Since a few days ago batteries are showing 100%soc just to deplete in about 20mins. It is not a capacity issue, or atlease i don't think so, battery packs was still happy until i week or so ago when i noticed this issue. What i found is that the batteries is not actually charging, the inverter starts to charge, and then stops, reporting that the batteries is at a lekker 52v although when measured on the pack they are sitting at a not so lekker 48v. WTF, why is it reporting wrong all of the sudden, any ideas, did some off the smoke come out of the inverter causing it to report the wrong value, and thus not charging, any ideas on what i can try...? I requested a firmware updated this morning, just seems weird that is was working fine, and now all of the sudden has a problem....? any suggestions would be appreciated! thanx

It has been some time and no updates... was so interested in this project of yours... did you loose interest... or is it finished... still ongoing....???

@Coulomb i have the SOL-I-AX-5P64 i am trying to test it seems like the pv portion is not working.... i have disconnected everything... connected two panels but when i turn on the inverter nothing happens... can it not be powered by solar alone...? There is no ac in connected... no batteries... it should still switch on right...?

Hi guys, thanx for the replies... i will need to recheck the ct of the one unit which i am struggling with although i am sure it is correct otherwise the usage on that house with the prepaid meter would have doubled... two of the inverters has never firmware since i have the option there or tabs for work mode one or two... i will request an update for the third one and see if it helps.... comms on batteries was working on all of them, or two of them who has supported batteries, i checked and confirmed, the third one has a battery brand installed not listed or supported so understandably comms is not working but it seems to be working fine after i manually configured the charge and voltage settings etc....

oh, i forgot, at the thrid installation, it seems like the inverter is not doing what i want it to do, i set tha battery limits under work mode two, yet during the night i will drain the battery until the battery shuts down, this is at the system with the older firmware, also using hubble batteries, inverter is picking up comms from the batteries, but it doesn't seem to do what i think i programmed it to do, error might be just outside the inverter screen though admittedly....

hi guys, by no ways new to the forum, however VERY new to sunsync, in short i installed 3 systems about 3 years or so ago, one at my house, one at parents place, one a dads work. At all three i installed the goodwe ES inverters because back then it felt like sunsync or deye was the new kid on the block and there was very little info available and i had no idea how after sales support would be, although i was very tempted to take them above the goodwe. Long story short, the goodwe's served me well, however i recelntly upgraded all three installations to sunsync 8kw units, i am however struggling with the settings.... first off, the first inverter does not give the work mode one and two under the settings, it basically only has one work mode setting tab, not the work mode two setting.... i think this is probably firmware... can i download the firmware and do update myself, i did it few times with goodwe, isn' rocket science, or do i request an update from sunsync remotely...? Secondly, is workmode one for on grid conditions, and work mode two for offgrid...? In this thread i find conflicting info regarding the ct, must the ct arrow point towards or flowing back into grid, meaning out off or away from inverter, or other way around....? Secondly, on the one system i am unable to get the system to use the batteries....? It is a 8kw sunsync with hubble batteries.... but it will not use the batteries, and since yesterday it basically stopped using or producing any solar as well....? i attached screenshots of my workmode settings... the option under work mode two, inverter power limit, what does that mean, does it mean the maximum kw the inverter can feed back to loads, or is that the maximum kw combined between grid and inverter power, i do not want to feed back to grid, so do it tick xero export, or do i just limit the wattage feedback to the grid.... i do not understand why the one inverter stopped using or producing solar, i changed some settings yesterday, but it is similar to one of the other setups and the other one is working fine, this system is only producing like 15-20watt from pv, basically doing nothing... any advice would be appreciated... p.s. can the big brains please comment... @Achmat @Bloubul7 @Scubadude @YellowTapemeasure @Sc00bs @Iseli Energy @FixAMess thanx for a great platform....

hi guys, Helping a friend with his solar installation,i am by no means a proffesional, i have a technical background, but not really electrical, but is immensely interested in soalr and its applications.... so please be gentle on me.... i have done a few installations for friends, family, and obviously my own installation, but these was all done using the goodwe inverters. They seems a little easier than the sunsyncin terms of basic wiring and setup, athouhg it seems the sunsync is more flexible, so i am excited, but also want to be sure everyone i helped everything is done properly. i am now installing for a friend, i was hoping someone can help me confirm if i am on the right track... the more knowledgable guys like @Leshen or @Achmat etc.... the main difference between the goodwe and sunsync is the sunsync not bonding the earth and neutral internally like the goodwe does when grid falls away.... my questions pertains to the earthing.... i installed two arrays at my friends place, i grounded or earthed each array with a 10mm square gp wire connected to a earthspike connected to the panels. Question, is this correct, according to me it is, what about the sunsync inverter, do i ground this back to the earth in the main db, or also to a earth spike... to me it seems like the manual wants it to be earthed back to db... is this correct... i will be installing a earth nuetral bridge as well, my concern is whether the rest of my earthing is done correctly.... please comment anyone who is sure about this bit... thanx gents....

i find this discussion VERY interesting, although some guys seem to get to hot under the collar, i think we are all in the same boat as per Bobster, and ultimately have the same frustrations... just a few things to consider.... the problem is exactly in that.... most guys do not use electricity only during the day.... almost ALL the heavy users with very little exception use electricity around the clock, and not just during the day.... we have a factory of about 500 people and have a day and night shift... and most times our autoclaves run during night shift, meaning we have peak during night time.... think of example the mining industry, most mines run operations 24 hours around the clock in shifts, if not that, the very least the processing plants and most services are still running 24/7 even if the operation is not at 100% production.... cooling and ventilation on a mine works on a completely different method than household ac... they have fire suppression and lifeline systems that never should go offline as is the same with ventilation and cooling, same with critical services that need to be supplied to aux or refuge bays underground.... think of industries like refineries like the likes of sasol etc, also around the clock operations.... any type of high temp furnaces, the guys in the galvanizing industry etc, the gold processing plant at DRD.... my wife is a electrical engineer at eskom/siemens, and i have but a very limited insight into their dealings and challenges, problem is mainly the corruption, which is core to all issues were the state has their dirty paws in the broth.... the poor guys on the ground just takes the grunt for it.... if you take the top 15 industrial customers of eskom you probably have a ridiculous figure like 70% of their consumption (can't remember the exact figures but is something crazy like that), so saying that guys using less on their fridges and lights during nights helps and that the duck curve is not an issue is not really applicable, yes eskom asks for guys to switch of swimming pool pumps and geysers etc etc during load, but that is because they are already so close to the cliff, and every bit helps because they are already so deep down the rabbit's hole.... and most days no longer have any spare capacity to ramp up.....

well then it is still retarded, both fukushima and chernobyl was due to GROSS human negligence or error, and neither of them the actual fallout was nearly as bad as what the press or stories makes it out to be, yes nucluar fallout is not what you want.... i am not ignorant to that... just making the point that people who little to nothing of nuclear speak about it like they are experts on the subject which is quite annoying.... evedently the nucluar waste generated by the pebble bed reactors would have been so little that all waste generated during its operational time could have been stored on site of the actual reactor..... if you have been to a actual coal powerstation you will know it is not nearly the same comparing the waste generated by a coal station just considering the ashdams needed to deal with the burnt cola ash then not even touching the actual coal mines and overburden and other enviromental issues this causes.... etc etc

great point or idea bobster, having worked on the old Pukke or north west PBMR project on their micro model simulation project while finishing my studies, i can vouch that nuclear is by far the cleanest and safest form of energy generation (or atleast was when we did the research now more than ten years ago... i doubt it has changed much), but most of the tree huggers have NO sense or idea of how these plants actually work, and the technology behind it... actually neither how the normal coal or gas fired plants work either, so why comment on something you have no idea on... i think if memory serves, the report i saw last year (wife is senior electrical engineer involved with the eskom woes, so all reports and data is courtesy of her work etc etc), nuclear was still the safest way to generate power per megawat generated with either hydro or wind being the the most dangerous (think about it,it normally goes wrong during installation, less casualties during the actual plant builds since it is not such a harse environment when compared to a hydro or wind turbine installation where guys are working at heights etc with lots of risks.... just google the wind farm installations to see how the big blades gets installed and how easily it goes pear shaped... and the safety or casualty rate is determined per megawatt generated over the rated or planned life of the system vs the casualties incurred during operation and installation!) Even solar is not that great when considering the entire carbon footprint since the manufacturing process behind these is not great, albeit improving all the time atleast... i hate these so called people who is environmentally conscious but actually have not idea what it is actually about..... and just sprout their own ignorance and crap as far and loud as they possibly can..... they normally cloud the judgement of people still forming their own opinions.....

Does your system trip while eskom is present....? Almost sounds that way when you describe it... it is def not supposed to do that.... i have the same inverter.... did not split my backup and essential loads... not in the traditional sense, i have the entire db loaded on the main supply side of the inverter, and the backup as well, switching with a manual changeover, i have never had the inverter reset or trip when used on the back up side if the grid is off, you can on the one had easily do it, but also if doing things responsibly it can actually be quite hard ( i am in similar setup to yours, having gas stove etc, solar geyser, with those few removed it becomes hard to max out the inverter's 4.6kw backup side....) If grid is present it is supposed to supplement what the pv or battery cannot provide at any given stage, no matter what the load is, it will just add from the grid, or that is how i understood it always... might be something else wrong with your setup... and also to bobsters point, if the actual inverter trips, then it should only be about 2 mins, since the inverter basically reboots before power is back on, if a trip then happens in short succession then is is a longer period, i think like 15 mins or something before power is restored since the inverter has an internal mechanism to protect itself from overheating when overloaded.... the little i can add.....