Decsus Posted April 20, 2022 Posted April 20, 2022 Hi everyone, I am the new owner of a sunsynk 8.8kv inverter. I am having some issues and was hoping that you guys may be able to help me with some answers. 1. When I change settings on the LCD screen, they don't seem to take. During load shedding I would like to untick my "use timer" under (System). Simply to ensure that grid charge works and charges the batteries when there is grid. But what happens is I untick it and press "OK" (I have also tried pressings "Enter" ) but once I get to the default screen and go back to system, "Use timer" is ticked again. 2. I want to make sure what exactly should the settings be to ensure that I don't push back to the grid. This is my problem, see image, and I believe pushing back into the grid will also make my prepaid meter run "forward" Regards Quote
Leshen Posted April 20, 2022 Posted April 20, 2022 5 hours ago, Decsus said: Hi everyone, I am the new owner of a sunsynk 8.8kv inverter. I am having some issues and was hoping that you guys may be able to help me with some answers. 1. When I change settings on the LCD screen, they don't seem to take. During load shedding I would like to untick my "use timer" under (System). Simply to ensure that grid charge works and charges the batteries when there is grid. But what happens is I untick it and press "OK" (I have also tried pressings "Enter" ) but once I get to the default screen and go back to system, "Use timer" is ticked again. 2. I want to make sure what exactly should the settings be to ensure that I don't push back to the grid. This is my problem, see image, and I believe pushing back into the grid will also make my prepaid meter run "forward" Regards Hi. Can you post pictures of all your screen setting. It's probably doing that cos you have ticked grid peak shaving. But can I see all the settings. Quote
Leshen Posted April 20, 2022 Posted April 20, 2022 Also u have grid charge ticked between 17:00 and 20:00 which theoretically will only charge the battery up to 20%. Quote
TimCam Posted April 20, 2022 Posted April 20, 2022 Also check on your "settings", "Basic", "Reset", is there a check box ticked for "Lock out all changes". If so, un-tick it, and see if this helps. Quote
Decsus Posted April 21, 2022 Author Posted April 21, 2022 13 hours ago, Leshen said: Also u have grid charge ticked between 17:00 and 20:00 which theoretically will only charge the battery up to 20%. I didn't get to changing any of these settings since I cant get the timer to go off. So just to be clear on this point, if Grid charge is not ticked and its on 20% that means that DOD of the battery will go to 80% during that time frame i.e only 20% remaining on the batteries. But if Grid is ticked it will only charge till 20% battery capacity. Quote
Decsus Posted April 21, 2022 Author Posted April 21, 2022 12 hours ago, TimCam said: Also check on your "settings", "Basic", "Reset", is there a check box ticked for "Lock out all changes". If so, un-tick it, and see if this helps. This was un-ticked TimCam 1 Quote
Decsus Posted April 21, 2022 Author Posted April 21, 2022 14 hours ago, Leshen said: Hi. Can you post pictures of all your screen setting. It's probably doing that cos you have ticked grid peak shaving. But can I see all the settings. grid peak shaving is on yes, here are all the settings https://gmacc-my.sharepoint.com/:f:/g/personal/casper_gmacc_co_za/EhF-p2StNDFOiGpGWKELsCUB_j71AfaMZt66rlG1iztlOw?e=VWf7Bp Thanks for the responses guys Quote
Leshen Posted April 21, 2022 Posted April 21, 2022 1 hour ago, Decsus said: I didn't get to changing any of these settings since I cant get the timer to go off. So just to be clear on this point, if Grid charge is not ticked and its on 20% that means that DOD of the battery will go to 80% during that time frame i.e only 20% remaining on the batteries. But if Grid is ticked it will only charge till 20% battery capacity. That's correct. Untick grid peak shaving and untick BMS Err Stop. Decsus 1 Quote
MakoShark Posted April 21, 2022 Posted April 21, 2022 (edited) I think I had the same issue where you change that tick to use timer and go out and back in and the setting doesnt save, I think it was if you have grid charge ticked under the battery settings it wont allow you to untick, something like that Edited April 21, 2022 by MakoShark Decsus 1 Quote
Halcyon Posted April 21, 2022 Posted April 21, 2022 Having perused your pictures here are some initial notes on your settings: Picture 10 - If you don't want to export power beyond your utility meter you should tick zero export on picture 10. Picture 11 - What CT coil was supplied to you? It should be the 50ma / 100A model. The CT ratio should be set to 2000 and not 200, otherwise the reading will be wrong. Picture 4 - Did you installer put in an earth bond relay on the load output? If not they should. You then need to tick the setting "signal island mode" to ensure it operates. Picture 6 - If you dont have a specific use case for Grid peak shaving, untick that setting. Picture 4 - For safety I would make the equalisation days 0, just in case your inverter tries to equalise your lithium which will damage them. This setting only for lead acid. Don't forget to click ok after changing any setting to ensure it saves. Leshen and Decsus 1 1 Quote
Decsus Posted April 21, 2022 Author Posted April 21, 2022 4 hours ago, Leshen said: That's correct. Untick grid peak shaving and untick BMS Err Stop. I did that, will check what happens and will read up on BMS Err stop as I dont know what that does 4 hours ago, MakoShark said: I think I had the same issue where you change that tick to use timer and go out and back in and the setting doesnt save, I think it was if you have grid charge ticked under the battery settings it wont allow you to untick, something like that I will check this out as well, though it seemed like it saved the settings after I did the what Halcyon said 3 hours ago, Halcyon said: Having perused your pictures here are some initial notes on your settings: Picture 10 - If you don't want to export power beyond your utility meter you should tick zero export on picture 10. Picture 11 - What CT coil was supplied to you? It should be the 50ma / 100A model. The CT ratio should be set to 2000 and not 200, otherwise the reading will be wrong. Picture 4 - Did you installer put in an earth bond relay on the load output? If not they should. You then need to tick the setting "signal island mode" to ensure it operates. Picture 6 - If you dont have a specific use case for Grid peak shaving, untick that setting. Picture 4 - For safety I would make the equalisation days 0, just in case your inverter tries to equalise your lithium which will damage them. This setting only for lead acid. Don't forget to click ok after changing any setting to ensure it saves. Thanks for this reply, I checked and cannot find a coil installed, I confirmed this because there are no wires running to the ports on the Inverter where the coil should be connected., I thus did not change anything according to points 2 and 3. Below is the grid feedback today, I will monitor this tomorrow. Image before settings change Image after settings change. Thanks for the help guys, I will monitor this and keep in touch. I am concerned about the fact that there is no CT coil and the fact that except for the "system mode" settings, I haven't touched any settings since the installer left. I am concerned about the installation, can anyone suggest a Sunsynk accredited installer in the Pretoria area, that I can get to come and have a look, second opinion? One last thing, I have found at night when I access the Sunsynk app (and the web portal) , and look at the power flow (I am aware of the 5 min delay), I often just shows 0 on PV, battery, load and grid. I think this is when the battery DOD reached its limit according to the system mode timer, but that should not stop the information being passed on. Quote
Decsus Posted April 21, 2022 Author Posted April 21, 2022 I had to add this, since this is something I picked up now. This is not the same as I had in the past where everything on the app says 0, (in this case the power flow didn't show it, but the graphs still had the readings logged) The app and web portal, show a different picture to that of the LCD screen, the app and web portal does not show the grid input. Not on the power flow or the graphs. Quote
Halcyon Posted April 22, 2022 Posted April 22, 2022 The CT coil is fundamental to the correct operation of the machine, especially if you are not allowed to export power. I would suggest you get someone to check your installation. Here is a list of approved installers https://www.sunsynk.org/approved-installers-1 Decsus 1 Quote
Decsus Posted May 4, 2022 Author Posted May 4, 2022 Hi everyone, Just an update. The System mode constantly re-ticking the "Use timer" was because of Grid peak shaving that was ticked, this is for future reference I have the CT Coil installed now Thanks for this Halcyon, the installer knew nothing about this either, and he almost installed the CT before the Non-essential loads instead of after Picture 11 - What CT coil was supplied to you? It should be the 50ma / 100A model. The CT ratio should be set to 2000 and not 200, otherwise the reading will be wrong. On another note. At around 16:00 yesterday I changed my system mode settings to this (See System mode picture) yet, the batteries started charging at 22:00 until it reached 95%. (See graph). I think the system mode doesn't update, even though it displays the settings correctly. Any advice. SIDE NOTE - the batteries that drops to 0% earlier in the day was us testing the CT coil etc Quote
hdupreez Posted May 4, 2022 Posted May 4, 2022 Hello Decsus. I have 2x 5kw Sunsynk inverters which was installed a few days ago. I had similar issues with getting the system mode sorted. I haven't checked all your settings, but the following is very important: Make sure the time slots are in chronological order, with time slot 1 the closet time to 00:00. So in your case, put 06:00 to 09:00 in time slot 1 and populate the rest in order. It does not make sense, but it does work. My first time slot was set from 23:00 to 05:00 to charge my batteries from the grid and it just refused. I then made my first time slot 01:00 to 05:00, kept everything else the same and it started working. I suspect it is a bug in the software. Decsus 1 Quote
Decsus Posted May 4, 2022 Author Posted May 4, 2022 29 minutes ago, hdupreez said: Hello Decsus. I have 2x 5kw Sunsynk inverters which was installed a few days ago. I had similar issues with getting the system mode sorted. I haven't checked all your settings, but the following is very important: Make sure the time slots are in chronological order, with time slot 1 the closet time to 00:00. So in your case, put 06:00 to 09:00 in time slot 1 and populate the rest in order. It does not make sense, but it does work. My first time slot was set from 23:00 to 05:00 to charge my batteries from the grid and it just refused. I then made my first time slot 01:00 to 05:00, kept everything else the same and it started working. I suspect it is a bug in the software. Thanks for this info, I set it up like that now, will monitor and get back tomorrow Quote
system32 Posted May 5, 2022 Posted May 5, 2022 Picture 14 - Modbus SN 00, change to 01, Modbus address 0 is a broadcast address, monitoring over modbus may be a problem with 0. Picture 4 - 90 days Equalizing cycle - You haven't mentioned which batteries you have, normally this is 0 (disable) for Lithium. Picture 4 - Signal Island Mode if you have a Neutral-Earth Bond Picture 11 - DRMs - this is for logic interface for AS/NZS 4777.2: 2015, is used to receive and response commands from grid company and then adjust inverter output power - Disable for ZA. Picture 11 - CT Ratio is normally 2000 Picture 3 - BMS_Err_Stop normally unticked - if there is a comms issue to the BMS, this will cause the SunSynk to stop. Picture 9 - ensure you cover the 24h, no overlap and sequential/in order/consecutive. You haven't mention which firmware you have. Check here for latest: https://powerforum.co.za/topic/11687-sunsynk-5kw-8kw-and-12kw-latest-firmware-version/page/2/ Quote
Halcyon Posted May 5, 2022 Posted May 5, 2022 On 2022/05/04 at 8:36 AM, Decsus said: Thanks for this Halcyon, the installer knew nothing about this either, and he almost installed the CT before the Non-essential loads instead of after Hi Decsus. The CT coil must be installed at the incoming grid feed of your house pointing towards the inverter before any non-essential loads. https://capture.dropbox.com/RcZJ1yblVUla9uM6 Quote
Sunsynk Posted December 22, 2022 Posted December 22, 2022 I had Sunsynk inverters installed in November. Every time there’s load shedding the power to my whole house goes off and then about 5 minutes later it comes on again. Every time I get the same error readings: INVERSED FAILURE & PARALLEL SYSTEM STOP. Now I’ve been locked out of the App and can’t even see what’s going on! Beyond furious with this whole situation. What’s going on and how are Sunsynk going to resolve it?? Very unhappy with this lot! Quote
GreenFields Posted December 22, 2022 Posted December 22, 2022 1 hour ago, Sunsynk said: I had Sunsynk inverters installed in November. Every time there’s load shedding the power to my whole house goes off and then about 5 minutes later it comes on again. Every time I get the same error readings: INVERSED FAILURE & PARALLEL SYSTEM STOP. Now I’ve been locked out of the App and can’t even see what’s going on! Beyond furious with this whole situation. What’s going on and how are Sunsynk going to resolve it?? Very unhappy with this lot! DC_Inversed_Failure appears to be an AC overcurrent fault. Question would be what loads do you have connected to your essential loads circuits. It could be that you are exceeding the rated power of the inverter, but not the pass-through current, such that you may be operating normally before loadshedding, but when the grid falls away, your inverter may be overloaded and shut down and re-start. You also don't say what batteries are installed. Would probably need more information, more detail on the specifics of the installation, and the loads connected. I wouldn't automatically assume that the inverter manufacturer is at fault. Quote
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