June 30, 20224 yr Hi Guys Last night my Sunsynk 8kw decided that it was disowning Eskom and will no longer connect to the grid 🙂 It came up with an F13 Grid_Mode_changed error and since then seems unable to connect. The green light does come on for AC power supply above the screen. Anyone have any suggestions as to what the problem could be?
June 30, 20224 yr Author Thanks @WannabeSolarSparky Is there a switch sequence I should follow for the Reboot? I tried switching it off/on but it didn't seem to make any difference and the screen didn't power down so not sure I did it correctly.
June 30, 20224 yr I usually just switch it off and back on at the switch on the inverter. Sometimes you can also simply goto the error page and then when you leave it then it resets. If it does not clear maybe the grid has a frequency issue.
June 30, 20224 yr Author Tried restarting etc, still wouldn't connect. I have however managed to work out what the problem was with some assistance from my installer 🙂 It was seeing the grid voltage correctly but was seeing 0hz on the Solarman app (and on my Home Assistant) The inverter either changed it's grid frequency setting to 60hz instead of 50hz when it was running the generator by itself (not sure if that is even possible, or I may have changed it by mistake when I was adjusting the grid shaving setting (probably more likely) and that is what caused it to not be able to connect to Eskom. I assume that is what caused the F13 Error that was reported. Once I changed it back to 50hz it connected again.
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