DrJohnZoidberg
Honorary Master
My issue is random and intermittent, works fine until it doesn't and there are no error codes being logged.can't you just turn your main switch off and then on again?
South Africa’s biggest forum. Discuss, discover, and connect with thousands of members.
My issue is random and intermittent, works fine until it doesn't and there are no error codes being logged.can't you just turn your main switch off and then on again?
Do you know if this happens before or after the grid relay engages when grid power is restored?My issue is random and intermittent, works fine until it doesn't and there are no error codes being logged.
No, it happens without any grid issue. Happened again this morning at around 2:18, grid was stable.Do you know if this happens before or after the grid relay engages when grid power is restored?
Have you tried to extend the time delay between when grid is restored and the inverter reconnecting to the grid?
If you can simulate the behaviour by dropping and reengaging the grid with your change over switch the problem is likely localised as opposed the being caused by an unstable grid supply.

Any firmware updates?There are a lot of results when searching for the F18 error online but they all involve the grid coming back from an outage, in my case it's just happening randomly.
Thanks, that was my next move anyway. Not sure why it would work fine for 3 years but it's definitely worth a try.
Indeed. Hopefully it can be an on-site repair instead of sending it in.Oh brother.
Good luck. I always have cold shivers when I do firmware upgrades.I contacted Sunsynk for the firmware upgrade, they couldn't for some reason perform a remote update (maybe my firewall rules are too strict) but they provided me the firmware files and instructions - seems pretty simple. Will do it this weekend.
I'm still struggling getting my firmware updated.I contacted Sunsynk for the firmware upgrade, they couldn't for some reason perform a remote update (maybe my firewall rules are too strict) but they provided me the firmware files and instructions - seems pretty simple. Will do it this weekend.

You must have been hammered after that.I'm still struggling getting my firmware updated.
The initial reply they sent me contained two firmware files but zero information on if I need to use them both or the order I needed to flash them in, after a few emails back and forth with their extremely lazy support they told me I need to flash both and the order doesn't matter.
Tried this weekend and while I can get the files uploaded and it looks like the firmware is updating it eventually just stops with nothing interesting happening, and the firmware just stays on the old version. No status messages of any sort, it just sits there counting up during the update and then goes back to normal.
Told them this and I kid you not, they told me to contact Sunsynk (they said Sunsunk, don't know who that is) support for on-site - I just emailed them back telling them I'm already speaking to Sunsynk support
View attachment 1950159
Every response I get from them is as brief as possible and only ever answers one of my questions, and is usually full of spelling and grammar issues. Don't they know AI assistants exist?
Well, now I know why some remote updates done by "Sunsynk" fails. I am not sure they even know what they are doing.I'm still struggling getting my firmware updated.
The initial reply they sent me contained two firmware files but zero information on if I need to use them both or the order I needed to flash them in, after a few emails back and forth with their extremely lazy support they told me I need to flash both and the order doesn't matter.
Tried this weekend and while I can get the files uploaded and it looks like the firmware is updating it eventually just stops with nothing interesting happening, and the firmware just stays on the old version. No status messages of any sort, it just sits there counting up during the update and then goes back to normal.
Told them this and I kid you not, they told me to contact Sunsynk (they said Sunsunk, don't know who that is) support for on-site - I just emailed them back telling them I'm already speaking to Sunsynk support
View attachment 1950159
Every response I get from them is as brief as possible and only ever answers one of my questions, and is usually full of spelling and grammar issues. Don't they know AI assistants exist?