1. Get the basic information:
Model, serial number, error code, how often the error happens, installation & commissioning date;
2. Other steps to be taken:
2.1. Restart the inverter(turn off the DC side and the AC side for at least 5 minutes, then turn both of them on), if it will back to work normally, and not show up again, then solved.
2.2. Please check voltages between L1 & PE; L2 & PE; L3 & PE; N & PE;
If all of them are right, then move to the next step; ?
2.3. If not , please contact after-sales people of Solis. And sent what you have got to them.
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