6 Technical Parameters
5 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.
Note:
When sunlight is insufficient, the PV inverter may continuously start up and shut down automati-
cally due to insufficient power generated by the PV panels, which would not lead to inverter
damage. If the problem still exists, please call the local service office.
1. Disconnect DC switch, take off DC connector.Check the impedance between PV (+) & PV (-) to earth.
2. If impedance is less than 100KΩ, please check the insulation of PV string wiring to the earth.
3. If impedance is larger than 100KΩ, please contact local service office.
4. Take off AC connector, measure the impedance between neutral and PE. If it is larger than 10 KΩ,
please check AV wiring.
1. Disconnect the DC switch, take off AC connector, and then measure the voltage between line and
neutral no connector. Check if it conforms to the grid-connected specification of inverter.
2. If not, please check if the distribution switch is connected and the grid is normal.
3. If conforming to the specification, reconnect AC connector and DC connector. If the problem still
exists, please call the local service office.
1. Disconnect the DC switch , take off DC connector,and then check PV string voltage. Check if it
exceeds the input voltage in inverter specification.
2. If it does, please reconfigurate PV panel string.
3. If the problem still exists, please call the local service office.
1. Please check if the installation position conforms to the specification.
2. Try to lower the surrounding temperature.
3. Move the inverter to the vent or change the installation position.
4. If the problem still exists, please call the local service office.
1. Disconnect the DC connector.
2. Reconnect the DC connector.
3. If the problem still exists, please call the local service office.
1. Disconnect the DC connector.
2. Reconnect the DC connector.
3. If the problem still exists, please call the local service office.
1. Disconnect the DC switch, take off DC connector, and then measure the voltage of PV string.
2. Plug in DC connector and reconnect DC switch.
3. If the voltage is less than 70V, please check the PV string configuration.
4. If the voltage is higher than 125V and still no display, please contact local service office.
1. Disconnect the DC switch, check the insulation of PV string wiring to earth.
2. Reconnect the DC switch again.
3. If the problem still exists, please call the local service office.
1. Disconnect DC switch, take off the AC connector, and then measure the voltage between line and
neutral in connector. Check if it conforms to the grid-connected specification of inverter.
2. If not, please check grid wiring.
3. If conforming to the specification, please connect AC connector, reconnect DC switch.The inverter
will connect grid automatically. If the probiem still exists, please call the local service office.
1.The PV inverter will automatically restart if the Fac returns to normal.
2.If the problem still exists, please call the local service office.
Others
No display
Vac Fail
Fac Fail
Display
Troubleshooting
Ground I Fail
Isolation Fail
GFCI Fail
DC Bus High
SPI Fail
EEPROM R/W Fail
Relay-Check Fail
Over Temperature
PV Over Voltage
Utility Loss
System
failure
System
failure
Inverter
failure
DCI High
18
17
~1 (Adjustable from 0.8 leading to 0.8 lagging)
<3%
Technical Data
PV Input Data
Max. DC Power (W)
Max. DC Input Voltage (V)
[1]
MPPT Range (V)
Starting Voltage (V)
Max. Input Current (A)
Max. Short Current (A)
No. of MPP Trackers
No. of Input Strings per Tracker
AC Output Data
Nominal Output Power (W)
Max. Output Apparent Power (VA)
Nominal Output Voltage (V)
Nominal Ouput Frequency (Hz)
Max. Output Current (A)
Output Power Factor
Output THDi (@Nominal Output)
Efficiency
Max. Efficiency
Europe Efficiency
Protection
Anti-islanding Protection
Input Reverse Polarity Protection
Insulation monitoring
DC Surge Protectioin
AC Surge Protectioin
Residual Current Monitoring Unit
AC Over Current Protection
AC Short Protection
AC Over Voltage Protection
Arc Fault Detection On PV Side
Terminal Temperature Detection
General Data
Operating Temperature Range (℃)
Relative Humidity
Operating Altitude (m)
Cooling
User Interface
Communication
Weight (kg)
Size (Width*Height*Depth mm）
Protection Degree
Night Self Consumption (W)
Topology
Certifications & Standards
Grid Regulation
Safety Regulation
EMC
GW6K-DT
9000
1000
180~850
160
12.5/12.5
15.6/15.6
2
1/1
6000
6600
400, 3L/N/PE
50/60
9.6
98.2%
＞97.6%
Integrated
Integrated
Integrated
Integrated（Type III）
Integrated（Type III）
Integrated
Integrated
Integrated
Integrated
Optional
Optional
-30~60
0~100%
≤4000
LED or LCD
IP65
<1
Transformerless
GW5K-DT
7500
1000
180~850
160
12.5/12.5
15.6/15.6
2
1/1
5000
5500
400, 3L/N/PE
50/60
8
98.2%
＞97.6%
Natural Cooling
15
354*433*147
GW5KL-DT
7500
600
180~850
160
12.5/12.5
15.6/15.6
2
1/1
5000
5500
400, 3L/N/PE
50/60
8
98.0%
＞97.5%
GW4K-DT
6000
1000
180~850
160
12.5/12.5
15.6/15.6
2
1/1
4000
4400
400, 3L/N/PE
50/60
6.4
98.2%
＞97.6%
GW4KL-DT
6000
600
180~550
160
12.5/12.5
15.6/15.6
2
1/1
4000
4400
400, 3L/N/PE;
50/60
6.4
98.0%
>97.5%
WiFi or LAN(Optional)
VDE-AR-N 4105,EN 50549/VDE0126-1-1,AS/NZS 4777.2,CEI-021,IEC61727
IEC62109-1&2
EN 61000-6-1, EN 61000-6-2, EN 61000-6-3, EN 61000-6-4，EN 61000-4-16, EN 61000-4-18, EN 61000-4-29