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9 Troubleshooting and
Maintenance
9.1 Troubleshooting
9.1.1 LED Indicator
See “
Tab. 6-2Indicator Status Description
” for the definition.
Fault Type
Troubleshooting
LED indicator
cannot be lit.
1. Disconnect the AC circuit breaker.
2. Rotate the DC switch to “OFF”.
3. Check the polarity of DC input.
1. Disconnect the AC circuit breaker.
2. Rotate the DC switch to “OFF”.
3. Check the inverter electrical connection. Refer to “
4. Check whether the voltage of DC input exceeds the
inverter start-up voltage.
5. If all the above conditions are OK, please contact
SUNGROW.
9.1.2 Errors on the App or LCD Screen
If an error occurs, the “Error” state will be shown on the main screen. We need
the following information to provide you with the best assistance:
inverter model (e.g. string, central, grid-connected, hybrid, transformerless,
single phase, triple phase, single MPPT, multiple MPPTs),
product name,
serial number of the inverter,
error code / name, and
a brief description of the problem.
Code
Description
Troubleshooting
002
Grid over-voltage.
The grid voltage
exceeds the protective
value. (stage I)
1. Check the voltage of the grid.
2. If the grid voltage exceeds the
permissible range of inverter protection
parameters, ask utility grid company for
solution.
3. If the grid voltage is within the permissible
range, contact Sungrow Service Dept.
Summary of Contents for SG2K-S
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