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Solis inverter settings

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Comments

  • Registered Users, Registered Users 2 Posts: 2,616 ✭✭✭Vizzy


    When you are looking at the "Overview" screen, there is a "Modify Information" button near the top of the screen. Press that and then switch on the Daylight savings.

    Worked for me anyway.



  • Registered Users, Registered Users 2 Posts: 311 ✭✭on_the_roots




  • Registered Users, Registered Users 2 Posts: 282 ✭✭olympicweights


    I had that changed since last year and it still didn't update the time. I did set my import from 1-4 though and all was well.

    Also to note I updated the time on the inverter but this didn't update the time on the app (which can be changed under Time Settings).



  • Registered Users, Registered Users 2 Posts: 4,125 ✭✭✭pureza


    I’ve a solis and and now an Saj inverter operating 2 strings but the Solis whilst it see’s the solar from the Saj inverter in terms of telling me how much I’m putting into the batteries,house and exporting,it’s not giving me a total solar production number for both strings

    It only shows me the total exported and what string one produces ,no total of 1+2

    The total export includes both,I just want to see how much both strings are doing together on a daily basis monthly and ongoing

    Is there a way to do this?

    I’ve the Solis app and now also the myenergy app for a zappi Glo



  • Registered Users, Registered Users 2 Posts: 1,035 ✭✭✭homewardbound11


    Quick question .
    With day light being longer from now till October and having a large array 9.8KW with batteries, to help avoid clipping and not charging the battery first .
    would it be better to switch from “SELF USE” to “FEED in priority” ?.



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  • Registered Users, Registered Users 2, Paid Member Posts: 6,107 ✭✭✭...Ghost...


    That's exactly how I do it.

    A snip from now. Exporting it all and batteries getting some too. House load doesn't always show accurate when it's low. Just my PC running.

    My total array size is 8.8kWp

    image.png

    Stay Free



  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    How come it is showing you exporting ~1kw more to grid than is being produced by PV? I’ve never seen that with my Solis.



  • Registered Users, Registered Users 2, Paid Member Posts: 6,107 ✭✭✭...Ghost...


    Second inverter satisfies the house load and the rest is looked after by the main inverter, keeping export hard locked at 5kW.

    Stay Free



  • Registered Users, Registered Users 2 Posts: 846 ✭✭✭conor_mc


    Does hard-lock mean that the feed-in limit caps all the export to grid, or just that coming from the main Solis inverter?



  • Registered Users, Registered Users 2 Posts: 845 ✭✭✭bunderoon




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  • Registered Users, Registered Users 2, Paid Member Posts: 6,107 ✭✭✭...Ghost...


    Bothe inverters are connected to the same CU, but no matter what is being generated, the main inverter hard limits the export to 5kW (being a 5kW inverter). So, I haven't verified the method, but I think what happens is this:

    Inverter A = 5kW hybrid with 5.2kWp PV.

    Inverter B = 3.6kW string with 3.6kWp PV.

    Assume both inverters are at full capacity from their PV strings and inverter A is set for priority export.

    The house load comes first, as always. I believe inverter B covers this and any extra available in managed by inverter A.

    So, if the house load is 1kW, then that get covered by inverter B, leaving 2.6kW available for distribution. Inverter A exports 5kW to the grid, leaving 0.2kW available for distribution. That leaves 2.8kW for distribution remaining. That will go into the batteries, because inverter A can drop 3kW into the batteries.

    If the batteries are full, or there was another 2kW of solar PV, the system can't manage more than the 3.6 + (5 + 3), so the rest would be clipped. I haven't fully investigated this, as there are so few days this happens, but it's the only thing that makes sense to me when the house has a load, but doesn't show on the display.

    Stay Free



  • Registered Users, Registered Users 2 Posts: 845 ✭✭✭bunderoon


    Thanks. Just so I’m getting my head around it properly:

    Your hybrid is the one with the CT clamp / meter on the grid tails, so it can see the net import/export for the whole house. It can charge the battery, supply house loads, and also see what is already going out to the grid.

    So if the battery is full, and inverter B is already exporting, say, 3 kW, then the 5 kW hybrid sees that at the grid point and should only add roughly another 2 kW, so that the total export stays at about 5 kW.

    So in other words, the hybrid is not really controlling inverter B — it is just watching the total flow at the grid tails and adjusting its own export around that. Is that basically how yours is working?



  • Registered Users, Registered Users 2, Paid Member Posts: 6,107 ✭✭✭...Ghost...


    That's my understanding, based on brief observations, yes.

    Stay Free



  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    Hi guys

    Having a problem since Solis updated my inverter to v 4F0052 earlier this week.

    At night, when the load is being fully supported by the battery discharge, the net import/export should hover around 0W, as it did for the past year of my ownership.

    However, since the update, it goes for period of a number of hours with a net import of ~100W. It eventually reverts back to net 0 for a number of hours. This repeats every night.

    There is a new parameter “Export Calibration” that I can use to correct this at a given moment, and Solis support have used it to “fix” it, but then when the inverter reverts back to normal operation the net effect is still ~100W.

    Solis support are hesitant to rollback my software!

    Anybody on the latest firmware have this issue?



  • Moderators, Home & Garden Moderators Posts: 7,732 Mod ✭✭✭✭graememk


    Can the export calibration setting be made permanent?

    It's a good way to fix this/tune the system



  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    Yes but my problem is that the calibration value I need changes by ~100W couple times a day. It will be perfect for about 4-6 hours and then starts importing 100W for next 4-6 hours and reverts.

    I can fix it to net 0 at any moment but it still flip flops by 100W, rendering my calibration wrong.



  • Registered Users, Registered Users 2, Paid Member Posts: 487 ✭✭mjatkey


    I had similar issue on the latest inverter swap and I think I cured it by changing the Battery Saving (under the battery settings). I had asked Solis but they never came back to me.

    It does now export a small amount at times but this is fine for me and is far better than importing even small amounts. (Pinergy EV).

    Give it a shot.

    image.png

    🌞 6.96kWp PV System. West Dublin🌞



  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    Thanks this seems like it could be it. ChatGPT states that this parameter makes the inverter less quick to jump to battery discharge for small loads.

    Mine is set to Enabled. I presume you have yours at Disabled?



  • Moderators, Home & Garden Moderators Posts: 7,732 Mod ✭✭✭✭graememk




  • Registered Users, Registered Users 2, Paid Member Posts: 487 ✭✭mjatkey


    Correct, not sure why Solis support aren't aware of this a I guess a good few TT's that get opened with them are because of this very issue? No body wants to install panels and batteries then sit and watch an inverter run itself of the grid.

    🌞 6.96kWp PV System. West Dublin🌞



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  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    Set the parameter to disabled. Sun is going down now so battery discharge supporting the Load. Unfortunately, it is still exporting ~100W to the grid also.



  • Registered Users, Registered Users 2, Paid Member Posts: 487 ✭✭mjatkey


    Did the change actually happen only Solis are very good at saying "success" but the parameter not actually changing. Check and maybe restart inverter or open another TT with Solis and insist on them rolling back the firmware.

    🌞 6.96kWp PV System. West Dublin🌞



  • Registered Users, Registered Users 2 Posts: 70 ✭✭dessertspoon


    Yep parameter changed. If I go back in from scratch it is set to disabled.

    Have an open ticket with them already, will see what they come back with!



  • Registered Users, Registered Users 2 Posts: 97 ✭✭GarlicBed


    Is there a way to set the max % when charging from the grid ? Without Home assistant.

    I want to charge off the grid to 80% then top up via solar during the day to limit clipping.

    Thanks



  • Moderators, Music Moderators Posts: 11,438 Mod ✭✭✭✭lordgoat


    Hey all, new set up and would like to some help maximising it.

    Have a 5kw battery and an 8.4kw array on two strings. Solis inverter. I've trawled the thread and have had a look in the settings but a little confused. Is there a guide I can be pointed to? Many thanks.



  • Registered Users, Registered Users 2 Posts: 199 ✭✭Jo Satan


    Work mode > Feed in Priority > Charge and Discharge Set

    image.png


    Would you not be better off charging to 100% and then discharging 20% in the morning?
    That way your battery gets balanced and you get paid FIT.

    Post edited by Jo Satan on


  • Registered Users, Registered Users 2 Posts: 97 ✭✭GarlicBed


    I don't seem to have that option.

    I must be on different firmware



  • Registered Users, Registered Users 2 Posts: 440 ✭✭nephster


    Gah. After a firmware update on Thursday from Solis (my first, two years after install) I'm getting a real headache with my batteries.

    My batteries (2x5.3 Weco) are now limited to discharging at 0.4kW or so (I think I've seen it hit 0.42) whether to load or grid. Before they would discharge up to something approach the inverter limit. Now anything above 0.4kW loadwise pulls from the grid despite a full battery, and force discharge won't work unless load is less than that or solar is generating. Forced charge also seems slower, only hitting 3.6kW max so that a two-hour charge slot that used to fill from flat to 100% will only get them two-thirds full.

    Solis are gaslighting me somewhat and are asking me to describe the problem again which I have multiple, multiple times.

    Any ideas on why my discharge rate from battery has dropped to a tenth? Again, this is for load NOT just for a timed charge. Solar generation will export to grid fine, as far as I can tell.



  • Registered Users, Registered Users 2 Posts: 321 ✭✭ptogher14


    I can't help you out too much but I'd started be looking at if it is the batteries or inverter limiting the current. Go to battery settings, from BMS, scroll to the end and look at the max charge rate.



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  • Registered Users, Registered Users 2 Posts: 440 ✭✭nephster


    While before I could hit 100A discharge rate on a forced discharge it is now 7.3-7.9 max. For forced charge, used to hit 90+A and now only hitting 65A.



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