Sigenergy
3016
Contactor Coil Overvoltage
Contactor coil voltage abnormally high. ID1=Grid contactor, ID2=Oil machine side contactor.
Common causes
High voltage spike on gridFaulty contactor coilPower supply overvoltage
What to check
STEP 1
Disconnect grid switch (air switch) via app and wait a few minutes
STEP 2
Restore grid switch and attempt power-on command
Escalate if
Fault reappears repeatedly — contact Sigenergy service
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