7. Troubleshooting
When faults occur, the “Fault” state will be shown on the main screen.
Follow the steps below to check what fault occurs.
Steps: Enter
→
Down
→
Advanced Information
→
Enter
password
→
Enter
→
Down
→
Warning Message.
Step1: Press ENTER.
Step2: Press DOWN to select Advanced Information, then enter password.
Step3: Press DOWN to select Warning Message, the press ENTER.
Figure 7.1 Advanced Information
Settings
Advanced Info.
Figure 7.2 Enter password
YES=<ENT> NO=<ESC>
Password:XXXX
Figure 7.3 Warning Messages
Error Logs
Warning Message
The inverter has been designed in accordance with international grid tied standards for
safety, and electromagnetic compatibility requirements. Before delivering to the customer
the inverter has been subjected to several test to ensure its optimal operation and reliability.
In case of a failure the LCD screen will display an alarm message. The alarm descriptions
and their corresponding alarm messages are listed in Table 7.1:
7. Troubleshooting
Alarm Message
Failure description
Solution
G_AB Over Volt
G_BC Over Volt
G_CA Over Volt
G_AB Over Volt2
G_BC Over Volt2
G_CA Over Volt2
G_AB Trans Ov_V
G_BC Trans Ov_V
G_AB 10min Ov_V
G_BC 10min Ov_V
G_CA 10min Ov_V
Grid Trans Ov_V
Gird Overvoltage
1. Resistant of AC cable is too high, Change
AC cable for larger size.
2. Adjust the protection limit if it's allowed by
electrical company.
Grid Over Freq.
Grid Over Freq.2
Grid Overfrequency
G_AB Under Volt
G_BC Under Volt
G_CA Under Volt
G_AB Under Volt2
G_BC Under Volt2
G_CA Under Volt2
Grid Undervoltage
1. Adjust the protection limit In user define
setting if it's allowed by electrical company.
1. Adjust the protection limit In user define
setting if it's allowed by electrical company.
1. Adjust the protection limit In user define
setting if it's allowed by electrical company.
Grid Under Freq.
Grid Under Fre.2
Grid Underfrequency
1. Adjust the protection limit In user define
setting if it's allowed by electrical company.
Grid Over Imp.
Grid Impedance is too large
1. Check connection and grid switch.
2. Check grid voltage ofinside terminal of
inverter .
No Grid
NO Grid Voltage
Grid Unbalance
Grid voltage is unbanlance
Grid Freq. Spark
Grid frequency is sparking
1. Check whether Grid is abnormal.
2. Confirm connnection of AC cable is normal.
3. Restart System and ensure whether the fault
is existing.
Grid A Over Curr
Grid B Over Curr
Grid C Over Curr
Phase Over Curr
Grid overcurrent
1. Restart inverter.
2. Change power board.
1. Restart inverter or contact installers.
Ig Tracking Err
Grid current tracking fail
1. Reduce the module number in series.
DC Overvoltage
Pv1 Over Volt
PV2 Over Volt
PV3 Over Volt
PV4 Over Volt
1. Check inductor connection of inverter.
2. Check driver connection.
Bus Over Volt
DC Bus overvoltage
1. Restart System and ensure whether the
fault is existing.
Vbus Unbalance
DC Bus is unbalanced voltage
.44.
.45.
