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Sunsynk Fault Codes

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Low Power Mode Issues: F23 Fault Code and Grid Disconnection

Has anyone experienced F23 (Tz_GFCI_OC_Fault) and grid disconnection (RCD switched off) being triggered by Low Power Mode?


For two days now, I had noticed the errors when the inverter hibernated after the battery reached its SOC. When the sun rose in the morning and the inverter came back online, I received Sunsynk Connect app notifications (F23 and Grid Disconnection) and the grid control switch in my RCD was off. I had to switch it back on yesterday and today.


If you have experienced similar issues, please share your experience on how you resolved them.


My inverter is Sunsynk 3.6kWh (SG01LP1). I have the current firmware installed and low power mode activated.


See the screenshot showing the state of hibernation trigged by the Low Power Mode and the grid not active at the start of day:


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See some relevant screenshots below which show the fault code and operational data shortly after for Feb 24th and 25th:


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waleogere
May 22, 2024

I have given up on low power mode for now, until the coast is good.

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