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Posted (edited)

Hi guys,

Just thought id post this here for anyone having similar issues, I noticed this morning that during loadshedding the inverter (5.5KW Sunsynk) stopped providing power to the house and I got a F56 alert that the DC voltage was low. After some investigation on my stats on the Solarman app I was able to see that after a firmware upgrade I had done in late February this issue had started. I noticed that I have been using more grid power as well since then and wondered if it was firmware but now I see it must be. I have requested the firmware to be rolled back to VE4.1.C which I think was stable.

Having a look at the stats you can see below the issue where the battery has been having these dips where its not used and using grid power instead, obviously theres no grid to use during load shedding so the power dropped:

image.png.ab8968b3aab5042cf006c8dd3172a73b.png

 

Then if i go back to before the firmware upgrade every day I check there is none of these dips:

image.thumb.png.24b349ac67201ee79f36ac8b6dc5026f.png

 

Another example of the issue:

image.png.ad899c99d375eceb5fa2c9f2aab74864.png

 

Edited by MakoShark
  • MakoShark changed the title to Sunsynk firmware issues - BMS?
Posted

Hello, I am also considering upgrading my software, but might hold off if the version you have is buggy? What software is your machine running at the moment? The latest software should be: M3.3.7.4 and CE 4.2.4

Posted
6 minutes ago, hdupreez said:

Hello, I am also considering upgrading my software, but might hold off if the version you have is buggy? What software is your machine running at the moment? The latest software should be: M3.3.7.4 and CE 4.2.4

Hey there, I am running that latest version but this issue started I think when I went to 4.2.x I think it was fine on 4.1.x but not sure, Im rolling back to 4.1.C to see if this fixes the issue or not but I have had 2 firmware upgrades in the 4.2.x version range and I have had the issue on both of them so far 

Posted

I am at the moment on C E4.2.0, but since I have a new system, I did not have load shedding yet, but it is planned for 14:00 to 16:30 today. I will check if my system responds similarly. 

 

Posted
15 minutes ago, hdupreez said:

I am at the moment on C E4.2.0, but since I have a new system, I did not have load shedding yet, but it is planned for 14:00 to 16:30 today. I will check if my system responds similarly. 

 

Yeah it might just be my inverter \ batery combo, who knows!

Posted
19 hours ago, hdupreez said:

I am at the moment on C E4.2.0, but since I have a new system, I did not have load shedding yet, but it is planned for 14:00 to 16:30 today. I will check if my system responds similarly. 

 

Also note that you will only see this issue when the grid is off at night because during the day solar will mask the issue, it's only when running fully on battery that power will drop

Posted (edited)

I requested a downgrade of FW on the Sunsynk wenbsite on Wednesday but nothig has happened, not sure if anyone could help with it? Still seeing the same issues every day

Edited by MakoShark
Posted
17 minutes ago, PowerUser said:

What battery are you using?

It's a Alpha Ess 10.1kw, I think it's still to do with the firmware though, the way the comms works with the battery. I've only had my solar system for 4 months now 

Posted
1 hour ago, MakoShark said:

It's a Alpha Ess 10.1kw, I think it's still to do with the firmware though, the way the comms works with the battery. I've only had my solar system for 4 months now 

It might be something related to the inverter and your particular battery only. What is the thickness of the cables and the length between the inverter and the battery?

Posted
4 minutes ago, PowerUser said:

It might be something related to the inverter and your particular battery only. What is the thickness of the cables and the length between the inverter and the battery?

I can check that for you but like I said this used to work prior to upgrading the firmware, literally from the day I upgraded it started behaving like this 

Posted
6 hours ago, MakoShark said:

Still no downgrade done by Sunsynk since I requested it last wednesday, I have submitted another request

That response time is a bit worrying... did they at least acknowledge receipt of your request?

Posted
5 minutes ago, Moffat said:

That response time is a bit worrying... did they at least acknowledge receipt of your request?

Nah they havnt, but with upgrades then never do as well, even though you add your email and phone details on the form you complete for it, they just do the upgrade and you dont even get notified its done

Posted
18 minutes ago, MakoShark said:

Nah they havnt, but with upgrades then never do as well, even though you add your email and phone details on the form you complete for it, they just do the upgrade and you dont even get notified its done

That's unimpressive, even an automated response isn't difficult to set up. Have been thinking of getting a Sunsynk 5kw inverter... this doesn't inspire confidence.

Posted (edited)
21 minutes ago, Moffat said:

That's unimpressive, even an automated response isn't difficult to set up. Have been thinking of getting a Sunsynk 5kw inverter... this doesn't inspire confidence.

The inverter itself is great but yeah I don't know about support, also not able to get control to remotely change settings... Have never got this right and not sure if it's possibe without 3rd party software / raspberry pi as well as not being able to manage your own firmware updates \ upgrades

Edited by MakoShark
Posted
1 hour ago, MakoShark said:

The inverter itself is great but yeah I don't know about support, also not able to get control to remotely change settings... Have never got this right and not sure if it's possibe without 3rd party software / raspberry pi as well as not being able to manage your own firmware updates \ upgrades

The new Sunsynk dongle allows the end user to remotely change settings via the Sunsynk app. 

Posted (edited)
20 minutes ago, Leshen said:

The new Sunsynk dongle allows the end user to remotely change settings via the Sunsynk app. 

The SOLARMAN dongle with Solarman Business App allows the same. So, there are 2 options for remote settings change already available.

Edited by PowerUser
Posted
2 hours ago, PowerUser said:

The SOLARMAN dongle with Solarman Business App allows the same. So, there are 2 options for remote settings change already available.

I've tried to get this working and have the business app set up and my plant associated with it so if anyone knows how to get that working I'd appreciate it as well

Posted (edited)
2 hours ago, MakoShark said:

I've tried to get this working and have the business app set up and my plant associated with it so if anyone knows how to get that working I'd appreciate it as well

You need to send a request to SunSynk to enable remote management for your inverter. It’s not enabled by default. 

Edited by PowerUser
Posted
10 hours ago, PowerUser said:

You need to send a request to SunSynk to enable remote management for your inverter. It’s not enabled by default. 

Cool, good to know, thanks, I will try to figure this out, in the meantime still no downgrade of my firmware...need to see what I can do anbout that as well

Posted
22 hours ago, Leshen said:

The new Sunsynk dongle allows the end user to remotely change settings via the Sunsynk app. 

And if I am not mistaking, Sunsynk will then also push updates automatically to your inverter.

Posted (edited)

I called Sunsynk support and spoke to a tech who says they dont normally recommend downgrading firmware but will see what he can see... But he was convinced it's load based which it's not, it's when there is low load on the system, no correlation to load and it litterally changed the day after I upgraded firmware. He says he will call me back about what he finds out 

Edited by MakoShark

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