Sungrow No Communication with Data Logger –... | solardiagnostics.org

Technical Background:

The Sungrow inverter communicates with the data logger to relay performance data, including energy production and system status. If the inverter detects a communication failure, it may trigger a fault condition to protect the system from potential damage. This can occur due to issues such as improper insulation resistance (RISO) measurements, ground faults, or grid frequency limits being exceeded, which can interrupt the data flow.

Symptoms:

Homeowners may notice that the Sungrow inverter's LED indicator is not lit or displays a fault code. Additionally, the monitoring app may show alerts indicating 'No Communication' with the data logger. Production metrics may be stagnant or not updating, indicating a loss of data transmission.

Possible Causes:

Communication cable failure between the inverter and data logger.
Incorrect configuration settings in the data logger or inverter.
Firmware incompatibility between the inverter and data logger.
Data logger power supply issues, such as blown fuses or disconnected wires.
Network connectivity problems, including router or internet outages.
Environmental factors, such as excessive heat or moisture affecting the data logger.

Solution:

1

Inspect the communication cable for any physical damage or loose connections. Use a multimeter to verify continuity.
2

Access the inverter settings via the monitoring app to confirm that the data logger is correctly configured and linked to the inverter.
3

Check for any firmware updates for both the inverter and data logger. If available, follow the manufacturer's instructions to update.
4

Verify the power supply to the data logger, checking for blown fuses or disconnected wires at the junction box.
5

Ensure that the network router is functioning correctly and that the data logger is connected to the network. Test the internet connection.
6

Examine the system environment for excessive heat or moisture that could affect the data logger's performance. Take corrective actions if necessary.
7

If the issue persists, consider resetting the data logger to factory settings and reconfiguring it.

Safety Warning:

Always ensure that any troubleshooting or repairs are performed by a licensed electrician or certified solar installer to adhere to safety protocols and local codes.

Prevention:

To prevent future communication issues, regularly inspect and maintain all connections and cables. Keep the data logger in a suitable environment, away from extreme temperatures and moisture. Schedule periodic firmware updates and ensure that network settings are correctly configured.

Frequently Asked Questions

•What are common causes of communication issues?

Common causes include network connectivity problems, incorrect settings, or hardware malfunctions.

•How can I reset the data logger?

To reset the data logger, locate the reset button and hold it for 10 seconds.

Sungrow No Communication with Data Logger – Troubleshooting & Technical Fix Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Frequently Asked Questions

•What are common causes of communication issues?

•How can I reset the data logger?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention: