Sungrow SG1K5TL, User Manual

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Operation of LCD Menu
8
43
7.2
Troubleshooting of Faults in LCD Screen
Type of fault Troubleshooting
Vdc-high 1. Disconnect AC circuit breaker.
2. Disconnect DC circuit breaker.
3. Check the voltage of DC side.
4. Restart the inverter until the DC voltage returns to allowable range.
Vac-low
Vac-high
1. Disconnect AC circuit breaker.
2. Disconnect DC circuit breaker.
3. Check the voltage of grid side.
4. If local grid condition exceeds AC requirements of inverter, reset the
protecting parameters. See “8.10.7 Set Protective Parameters”.
And if local grid voltage exceeds the upper limit value of “Vgrid-max”, or
if local grid voltage is under the lower limit value of “Vgrid-min”, please
contact your local electricity company to adjust the grid voltage.
5. If the fault still exists, please contact Sungrow.
F-fault 1. Disconnect AC circuit breaker.
2. Disconnect DC circuit breaker.
3. Check the frequency of grid side.
4. If local grid condition exceeds AC demands of inverter, reset the
protective parameters. See “8.10.7 Set Protective Parameters”.
And if local grid frequency exceeds the upper limit value of “Fgrid-max”,
or if local grid frequency is under the lower limit value of “Vgrid-min”,
please contact your local electricity company to adjust the grid frequency.
5. Close DC circuit breaker.
6. Close AC circuit breaker.
7. If the fault can not be solved, please contact Sungrow.
PM-FAULT If this malfunction occurs, the reasons are very complicated.
1. Disconnect AC circuit breaker.
2. Disconnect DC circuit breaker.
3. Check the temperature of heat sink. If its temperature exceeds 80
℃
,
restart the inverter until it recovers to environment temperature.
5. Close DC circuit breaker.
6. Close AC circuit breaker.
7. If this malfunction happens again, please contact Sungrow.