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8 Troubleshooting and
Maintenance
8.1 Troubleshooting
8.1.1 LED Indicator
See “Tab. 7-3 Status Descriptions of the Indicator” for the definition.
The indicator and LCD
screen cannot be lit.
1. Disconnect the AC circuit breaker.
2. Rotate the DC Switch to “OFF”.
3. Check the polarities of the DC inputs.
4. If all of the above are OK, please contact
SUNGROW.
The indicator goes out
from green.
1. Disconnect the AC circuit breaker.
2. Rotate the DC Switch to “OFF”.
3. Check the electrical connection.
4. Check whether the DC input voltage exceeds the
start voltage of the inverter.
5. If all of the above are OK, please contact
SUNGROW.
The indicator is lit red.
1. A fault is not resolved.
2. Perform troubleshooting according to the fault type
on the LCD screen. See “8.1.2 Errors on the App or
LCD Screen”.
3. If the fault persists, please contact SUNGROW.
8.1.2 Errors on the App or LCD Screen
When an error occurs, the “Error” state will be shown on the main screen.
Press to view all the error information.
For the battery error codes, if all the conditions are OK but the error still
occurs, contact the distributor or the battery manufacturer.
We need the following information to provide you with the best assistance:
inverter type (e.g. string, central, grid-connected, hybrid, transformerless,
single phase, triple phase, single MPPT, multiple MPPTs), or product name,
serial number of the inverter, error code / name, and a brief description of the
problem.
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