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Analysis by Marcus & Team

SolarEdge: Fixing PLC Signal Weak Error

Troubleshoot and fix a weak PLC signal in your SolarEdge system. Learn about causes, solutions, prevention, and safety for your home energy setup.

Frequently Asked Questions

•How do I check my SolarEdge inverter's firmware version using the monitoring app?

Open the SolarEdge monitoring app, navigate to 'Device Information', and select the inverter to view its firmware version.

•What network settings should I check if my SolarEdge gateway is not connecting to the internet?

Verify the Wi-Fi network name (SSID) and password are correct. Ensure the gateway has a valid IP address and DNS server assigned by your router. Check for any firewall restrictions that may be blocking the gateway's internet access.

•Where can I find the latest firmware updates for my SolarEdge inverter and gateway?

The latest firmware updates are typically available through the SolarEdge monitoring app. The app will automatically notify you when updates are available and guide you through the installation process.

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Marcus leads the technical research department at Storage Faults. Together with a team of systems analysts, he specializes in translating complex solar storage error codes into actionable diagnostic steps for the US market.

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Technical Background:

SolarEdge systems rely on Power Line Communication (PLC) to transmit data from the inverters to the gateway. The gateway aggregates this data and transmits it to the SolarEdge cloud for monitoring and analysis. PLC signal degradation can result from interference on the AC power lines, distance limitations, or malfunctioning PLC transceivers. Proper network configuration and firmware versions are critical for robust communication. The EMS relies on consistent data from the inverter to manage energy flow and respond to grid events.

Symptoms:

Inverter communication errors and reduced data logging frequency reported in the SolarEdge monitoring app. Intermittent or complete loss of real-time performance data from the PV array and energy storage system. Inability to remotely update inverter firmware via the cloud. System events showing 'PLC Communication Failure' or similar errors.

Possible Causes:

Corrupted inverter or gateway firmware.
Excessive noise on the AC power lines (e.g., from nearby appliances).
Long distance between the inverter and gateway exceeding PLC range.
Incorrect network configuration settings within the SolarEdge monitoring app or gateway interface.
Outdated SolarEdge monitoring app version.
Incompatible PLC standards between inverter and gateway due to mismatched firmware versions.

Solution:

1

Verify the SolarEdge monitoring app is the latest version available on the app store.
2

Check the gateway's network connectivity by accessing its settings through the app. Ensure it is connected to Wi-Fi or ethernet and has a stable internet connection.
3

Initiate a gateway reset via the monitoring app. Navigate to 'Device Communication' and select 'Gateway Reset'.
4

Check the firmware version of the inverter and gateway within the monitoring app ('Device Information'). Ensure they are compatible and up-to-date. Initiate a firmware update if available ('Firmware Update').
5

Review the network configuration settings in the SolarEdge monitoring app. Ensure the correct network is selected and that the password is correct.
6

Check for known issues on the SolarEdge portal related to firmware incompatibility and consider downgrading or upgrading firmware to resolve issues.
7

Contact SolarEdge support if the problem persists to check cloud connectivity status and server-side configurations.

Safety Warning:

Modifying network settings incorrectly can disrupt system monitoring and control. Ensure proper password management to prevent unauthorized access. Always use the official SolarEdge app for configuration changes. Document any changes made to the system configuration.

Prevention:

• Schedule regular firmware updates for the inverter and gateway through the SolarEdge monitoring app.
• Periodically review network configuration settings to ensure they are accurate.
• Monitor the system's performance data in the SolarEdge app for any signs of communication issues.
• Check for updates to the monitoring app regularly.

Expert Tip:

Use the SolarEdge monitoring portal (not just the app) to access more detailed system logs and diagnostic information. Check the 'Communication' section in the portal for specific PLC error codes and timestamps.