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Chapter 5
Troubleshooting
This chapter description fault code of wind power inverter and inspection method.
Code Display
Message
Cause
Inspection
2
UTILITY FAULT
Utility power abnormal
z
Check the connection between
Inverter and utility.
z
Check utility voltage status.
3
DC VOLTS FAULT
Input Voltage is too high
z
Wind speed too high cause over
voltage.
9
Current error
Output current abnormal
z
Check utility frequency and
voltage status.
10
OVER Temp
Over temperature protection
z
Was heatsink blocked or not?
z
Did the Inverter placed at
ventilation position?
12
Line freq error
Grid frequency abnormal
z
Check the connection between
Inverter and utility.
z
Check utility frequency status.
13
OVER WG ERROR WT over speed
z
Wind speed too high cause over
voltage.
14
OVER Pout
Over Load
z
Inverter tripped, it’ll automatic
reset in a while.
15
DC V FAULT
Surge Voltage to high
z
Was wind speed too high cause
over voltage? The DC capacitor
maybe burn out already.
16
Braking…R
Braking by resistor
z
When wind speed exceeds
13.5m/s, system will start
resistor brake protection
function. Then wind turbine
will slow down and system will
disable resistor brake protection
function and wind turbine will
operate normally.
17
Braking…S
Braking by short circuit
z
When wind speed often exceeds
13.5m/s in a few minutes,
system will start resistor brake
protection for 30 seconds and
short circuit brake actives for 5
minutes.
23
GRID Vrms error
Utility voltage too high
z
Was utility voltage over 10%
normal voltage in a short time?
26
GRID Idc error
DC offset current to grid>1A
z
Check the connection between
Inverter and utility. Was there
connected other load?
