Routine Maintenance - Sungrow SG2K5-S User Manual

8 Troubleshooting and Maintenance
Code Description
Ambient
503 sensor
warning.
Ambient
504 sensor
warning.
Radiator
505 sensor
warning.
Radiator
506 sensor
warning.
External
501 reading/writing
warning.
Abnormal
communication
warning
514 Sungrow Meter.
(Inverter
normally connected to
the grid.)

8.2 Routine Maintenance

Risk of inverter damage or personal injury due to incorrect service!
Always keep in mind that the inverter is powered by dual sources: PV
strings and utility grid.
Before any service work, observe the following procedure.
 Disconnect the AC circuit breaker and then set the DC load-break
switch if the inverter to OFF;
 Wait at least 10 minutes for inner capacitors to discharge completely;
 Verify that there is no voltage or current before pulling any connector.
60
Troubleshooting
temperature
open circuit
temperature
short circuit
temperature
open circuit
temperature
short circuit
1. Inverter can normally be connected to the
memory
grid.
2. Power on the inverter again. If the fault
persists, contact Sungrow Service Dept.
1.
of the
connections of the meter are correct.
2. Check whether the RS485 connection is
can be
correct.
Check whether
User Manual
the power cable