Why does the inverter display high DC voltage (Error 202)?
Analysis:
Normally, the DC voltage of Growatt single phase inverter could up to 550V, for three-phase inverter, it is 1100V. When the string voltage exceeds this value, the inverter will report that the PV input voltage is too high.
Solution:
Check each string to ensure that the total PVs' open-circuit voltage of the string is lower than the highest value of the inverter. At the same time, the influence of the ambient temperature on the component voltage needs to be considered.
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