6 Troubleshooting
In most situations, the inverter requires few maintenance. However, if the inverter is not working
properly, please try the following troubleshooting solutions;
• When a problem occurs, the red (fault) LED indicator on the front panel will light up and the LCD
screen will display the type of the fault. The following table lists error messages and the solutions
for associated faults.
1. Check the impedance between Ground and PV (+) & PV (-) . The impedance
value must be greater than 100kΩ. Make sure the inverter is earthed.
2. Contact local service office for help if the problem still persist..
1. Not connect to the grid.
2. Check if the power grid is connected to cable.
3. Check the availability of power grid.
1. Check if the PV open circuit voltage is higher or too close to the maximum
input voltage or not.
2. If the problem still persist when PV voltage is less than the maximum input
voltage, contact local service office for help.
1. The internal temperature is higher than normal value specified.
2. Reduce ambient temperature.
3. Move the inverter to a cool place.
4. If the problem still exists, contact local service office for help.
1. The ground current is too high.
2. Unplug the inputs from the PV generator and check the peripheral AC
system.
3. When the problem is cleared, reconnect the PV panel and check the Inverter
status.
4. Contact local service office for help if the problem still persist.
1. The PV Inverter will automatically restart within 5 minutes if the grid returns
to normal.
2. Make sure grid voltage conforms with the specification.
3. Make sure neutral (N) wire and PE wire are connected well.
4. Contact local service office for help if the problem still persist.
1. Grid is not connected.
2. Check grid connection cables.
3. Check availability of grid.
Vac Failure
Fac Failure
Type of fault Troubleshooting
Ground I Failure
Isolation Failure
Over Temperature
PV Over Voltage
Utility Loss
System
Failure
WiFi Reset
Pac=6000W
WaitLong Press
WiFi Reset OK
WiFi Reset Fail
WiFi Resetting
Long Press
WiFi Reload
Pac=6000W
Wait
WiFi Reload OK
WiFi Reload Fail
WiFi Reloading
or "Wi-Fi Reset Failed".
Error message
Fac Fail
Isolation Fail
Vac Fail
PV Over Voltage
Over Temperature
Utility Loss
Description
Grid frequency out of pemissible range.
Ground insulation impedance is too low.
Grid voltage out of permissible range.
Overvoltage at DC input.
Over temperature on the case.
Utility is unavailable.
5.4 Error Message
An error message will be displayed on the LCD if a fault occurs.
Press the Button until the LCD displays "Wi-Fi Reload", then long press until the LCD displays
"Wi-Fi Reloading...". Stop pressing and wait for the screen showing "Wi-Fi Reloading OK" or "Wi-Fi
Reloading Failed".
5.5 Precaution For Initial Startup
1. Make sure the AC circuit is connected and AC breaker is turned off.
2. Make sure the DC cable between inverter and PV string is connected, and the PV voltage is
normal.
3. Turn on the DC switch, and set safety according to the local regulation.
4. Turn on the AC breaker. Check the inverter work normal.
5.6 Special Adjustable Setpoints
The inverter has a field where the user could set functions, such as trip point, trip time, time of
reconnection, active and inactive of QU curve and PU curve. Fuctions can be adjusted through
special software. If insterested, please contact After-Sales. The software instructions are available
on the offical website. Alternatively, please contact after-sales for more information.
2423
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