NickB

Thanks for this. I have run these settings and it doesnt seem to improve anything. This is a fully off grid system though. Should I be setting the inverter power limiter? I understood this and the frid trickle feed was to do with feeding back into the grid?

Sure. timer is off and work mode details provided.

Just to add onto this. Below you can see that the system will go up to 5kw of solar power being output, to meet this spec however it will only do it if the load drops to around 250W as seen below

Thanks. I have made the changes to meet this specification above but hasnt affected the systems base operation in that even when load is low the solar just tracks the load and draws small amount from the batteries. Below you can see solar is putting out 2.4kw along with the load as we spike the draw but in general with a 1kw load will just supply that only

Just an update and hoping someone can assist on a recommendation form here. I have successfully upgraded the firmware to the latest however I am still struggling with the system not charging correctly. On a crystal clear day the solar seems to limit to about 1.2kw of generation split between batteries and load even though the SOC is only showing 70% on the batteries. If I push up the load to 2.5kw the batteries will discharge about 500-700w and the solar will increase its generation to 2kw. Any suggestions on a setting that could be causing this?

Thanks. I am going to request a firmware upgrade as I see mine is quite out of date. hoping they will still support through a solar man dongle.

I am currently running it on Use internal inverter values.

Thanks for this. I have tried both with this on and off and didn't seem to make much of a difference. I am glad to hear someone else running a similar setup that confirms it good operation. I have pylontechs on another location which are great but currently not in a position to replace these ones. For confirmation if your batteries are fully charged do you find they are will discharge at all if there is sufficient solar available?

Thanks for the feedback. Yes SA can be a bit finicky but seems to be correctly indicating the state of the sunsynk. On this site currently installed there is no BMS running at all. The batteries are 2x Huawei ESM-48100A1 that I have never been able to get BMS running on. I am advised that sunsynk does not have compatible BMS for this and unfortunately neither does the Solar Assistant. I have been in direct contact with SA on this and although they have been helpful they don't have the supporting information to even begin the integration it would seem. I believe at this point the primary issue is the fact that there is no BMS running as the voltages are reading quite erratically and the SoC is unreliable but un sure how to get around this any further unless there is advise to get it running with the ESM-48100A1 units. I have not been always running the internal sunsynk readings which would be based on voltage as I haven't been able to get the emulated BMS to work from the solar assistant as of yet. regarding the actual solar assistant it is connected via RS485 to the sunsynk. Can you confirm the latest sun synk firmware? currently showing COMM:e419 - MCU:3881 on the system.

So as can be seen here the system is still not driving the charging of the batteries while there is a load. From what I can tell I need to drop the load to about 200W or less and then it will start charging the batteries. But in the current setup it is constantly discharging that batteries. Note there is enough solar because if the consumption picks up to 3kw on the load the solar lags slightly but is able to supply it. This only sometimes happens however as the system has been seen to run correctly at times where it charges the batteries and supplies a fluctuating load.

In this Particular case it is 51V of charge, The % is showing 96% at the moment but as you will see from the intro post the battery % is very unreliable. Below I have also put the settings for the device however showing the float levels and where the device should charge too.

I did have it on, I have disabled and that seems to have fixed the disabling of the work mode timer. Thank you very much I am still having some of the historical issues however. Where batteries are subsidizing the supply. This was charging properly an hour ago though, below or two screen shots for reference. Main issue is there is no consistency and even through there is more then enough solar power battery will sometimes always be discharged.

Hi I am hoping someone can assist me here. I am having a couple issues on the my sun synk 8kW inverter. My setup is completely off grid and running 10kW of LI batteries but they do not have compatible BMS. I have been advised that for full off grid state the system should not the work mode timer engaged however it seems that even if I turn it off it re-enables itself after a minute or so. I am having the following issues and I am not sure if its related to the work mode timer but the device is inconsistent about how it works. 1. Battery levels will indicate as low and then when they start charging they spike to 100% (I am installing thicker battery cables incase there is too large a current difference here however this can happen even in early morning hours when there is only 300-500w being put into the batteries, but then at other times will not happen even with 3.5kW of charge is being supplied to batteries. (After restarting the whole system the batteries will read a totally different percentage) 2. Even though there is sufficient solar power there is always a small draw of current from the batteries the moment the load draw goes above 700W or so. This will cause the batteries to go from charging at a good rate of 2kw when only 200W of load down to discharging the batteries at 200W with a load of 1kW. (note that if the load spikes the solar tracks with it even in the middle of the day. I can appreciate that batteries needing to balance the supply to account for any surges however I have had it run where it can supply 2kw of load and charge batteries at 3kW. There is unfortunately just no consistency to its operation. I am running a solar assistant as I have used it with other projects like axperts and havnt ever seen anything like this but all appears to be firmware issues or settings causing the problem. If anyone can provide me with an idea configuration for off grid that they are running it would be greatly appreciated. Below is an example of what is happening with the battery state of charge where it suddenly shoots up and in the morning when it was rebooted dropped down indicating a different level Additionally here are my work mode timer setups, again it wont let me deselect the timer through the assistant or directly on the touch panel, it will unselect but after a minute revert. thanks in advance for any assistance.