Tesla
PVS_a018_MciString

PV String Not Connected (PVS_a018_MciString A-D)

PV string controller reports a string not detected on its MCI input (Powerwall 3 / Powerwall+).

DC connectors not seatedString faultMCI input fault
STEP 1
Verify the string DC connectors are fully seated.
STEP 2
Measure string Voc and polarity at the input.
String tests healthy but input still reads disconnected
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