Installation and Operator’s Manual Page 17 of 20
(Aurora Wind Interface Rev 4.0)
4 Trouble-shooting
Trouble-shooting should only be done by trained and qualified personnel. Trouble-
shooting involves hazardous voltages and energies.
Symptom Measurement/verify Possible Cause
Aurora Wind Inverter,
Blinking Green LED
Measure WBI Output;
Grid Voltage at Aurora
Wind Inverter connected
• Exporting initial point
of the power curve set
higher than actual Vdc
• Grid connection out of
range, check Inverter
output voltage setting
• Grid is not present
Wind turbine cyclically
accelerates and slows
down
Bulk Output Voltage;
Diversion LED status
• High wind speeds
• Diversion load is
active
• No proper power
curve is uploaded
• W/s slope is to be
optimized
Wind turbine stalls Wind Input Vac > 40 Vac
Diversion LED status
• Diversion Load
wrongly active
• Power curve is not
proper
Wind turbine furling Bulk Output Voltage;
Diversion LED status;
Check Diversion load for
heat production
• Diversion load is not
connected
• Extremely high wind
speeds
• Bulk Output Voltage
is not exceeding
530Vdc
No Green LED blinking
when, wind turbine is
above cut-in speed
Wind Input Vac > 40 Vac
at terminals;
Vac between F7, F8 and F9
• Generator damaged
• F1, F2, and/or F3
fuses are open
• Over voltage
activated crowbar
• Wiring issue between
PM generator and
WBI
Wind turbine won’t turn Wires from PMG and WBI
• Generator leads
shorted together
Table 4: Trouble shooting guide
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