This symptom means the central inverter has found that its measured AC output power and DC input power differ by more than it allows. On the Sunny Central CP XT it shows up as error number 6486, and both inverter behavior columns, S1 and S2, are marked W. The manufacturer table gives no corrective measure for this error, and the sources name no specific failure mode behind it. Inverter AC power and DC power are standard monitoring channels, so comparing the two trends is how the mismatch is seen in the data.
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observed_asc1 drafted · lead AC vs DC power mismatch
Reported by Sunny Central CP XT as error 6486 when the deviation between AC power and DC power exceeds what the inverter allows. The behavior columns S1 and S2 are both marked W; the source gives no corrective measure.
tbl=37.r15 h=5978a17eb8a1reports c3reports c3reports c3reports c4reports c4reports c2reports c2