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SolarEdge Inverter Troubleshooting: A Comprehensive Guide

writeen title of troubleshooting your solaredge inverter with a picture of a solaredge inverter

SolarEdge Inverter Troubleshooting


SolarEdge inverters are renowned for their reliability and efficiency in the realm of solar energy systems. However, like all sophisticated technology, they may encounter issues that require troubleshooting. This article, tailored for illinoissolarhub.com readers, delves into common SolarEdge inverter problems and provides step-by-step solutions to ensure your solar system operates smoothly.


Let's decode the complexities of SolarEdge inverters and ensure seamless performance. Explore more on our Hardware and Apps page for further insights into solar hardware.


Common Issues and Their Resolutions


SolarEdge inverters are equipped with advanced technology, but they are not immune to technical glitches. Here’s a breakdown of frequent issues and how to tackle them:


SW Error

Occasionally, inverters might display a SW error. This usually indicates a software-related problem.


  • Solution: The primary step is to contact SolarEdge Support. They provide expert guidance and, if necessary, software updates to resolve the issue.


Wrong AC Connection

An improper AC connection can trigger error codes.


  • Solution: Inspect and switch between L1 and L2 or L2 and L3 connections. This simple adjustment can often rectify the issue.


AC Current Surge

Surges in AC current are common but can affect inverter performance.


  • Solution: Check the AC connection to the inverter and consult with the grid operator for potential surge sources or irregular loads nearby. If the grid is stable, reaching out to SolarEdge support is advisable.


Ground Current - RCD

Ground current issues are critical and require careful handling.


  • Solution: This should be addressed by a qualified technician. The process involves turning off the inverter, disconnecting AC and DC inputs, and then reconnecting each DC string separately to identify the faulty string.



Detailed Error Code Analysis

Understanding specific error codes is crucial for effective troubleshooting. Below are tables summarizing error codes for both single phase and three phase SolarEdge inverters:


Table 1: SolarEdge Inverter Error Codes and Troubleshooting

Error Code (Firmware v3.18xx and before)

Error Code (Firmware v3.19xx and later)

Description

Troubleshooting Steps

4, 5, 8, 18-23, 39, 42, 45, 48

2x13, 2x15, 2x16, 3x2, 2x2D, 3xF

SW Error

Contact SolarEdge Support

N/A

112, 8x4F

Wrong AC Connection

Switch between L1 and L2 or L2 and L3 connections

9, 13

2x9, 2xD, N/A

AC Current Surge

Check the AC connection, consult grid operator, contact support if no grid problems

2xA, 2x25, 8x2B, 8x2C

10, 37, 38, 76, 77, 90, 2x26, 8x39

Ground Current - RCD

Follow specific steps for qualified technicians

14

2xE, 58/59/60, 8x19/8x1A/8x1B

AC Voltage Too High

Check AC connection, inverter country settings, consult grid operator

... (more error codes as per the document)

...

...

...


Table 2: System Warnings and Troubleshooting

Warning Number

CPU Version (v3.18xx and before)

CPU Version (v3.19xx and later)

LCD Text

Troubleshooting

1-4, 6-7

8x66 - 8x69

8x6A - 8x6F

Fan # Failure

Clean or replace the fan

5

N/A

N/A

Turn Switch Off to Configure

Access Setup menus during production

(Note: The above tables are a summary. For detailed information, please refer to the specific error code or warning number in the original guide)


These tables provide a quick reference to the most common issues encountered with SolarEdge inverters and their resolution. For any errors or warnings not listed here, or for more detailed troubleshooting, it's recommended to contact SolarEdge Support directly.



Proactive Maintenance Tips


Preventive maintenance is key to minimizing downtime and ensuring the longevity of your SolarEdge inverter. Here are some tips:

  • Regularly check and clean the inverter’s surroundings to ensure proper ventilation.

  • Keep the inverter’s software updated.

  • Monitor the inverter’s performance through the SolarEdge monitoring platform.

For more detailed guidelines on maintaining your SolarEdge system, visit our Maintenance and Care section.


Advanced Troubleshooting Techniques for SolarEdge Inverters

Diving deeper into SolarEdge inverter issues, we come across more complex scenarios that may require advanced troubleshooting techniques. This section expands on our initial guide to provide you with comprehensive solutions for maintaining the efficiency of your SolarEdge system. For additional insights and tips on inverter care, explore our detailed guide on Inverter Maintenance.



Advanced Error Code Interpretation


Sometimes, error codes displayed by your SolarEdge inverter can be intricate. Here's a more in-depth look at some of these codes and their implications:


Temperature-Related Issues


  • Error Codes: 15, 16, 17

  • Solution: Ensure proper inverter clearances for adequate ventilation. Regularly clean the heat-sink fins. If a temperature sensor issue is indicated, contact SolarEdge support.


Communication Errors


  • Error Codes: 8x1C/8x1D/8x1E, 8x1F/8x20/8x21

  • Solution: These errors generally point towards AC voltage irregularities. Verify the inverter's settings, consult the grid operator, and if necessary, adjust the grid protection values.



Pro Tips for SolarEdge Inverter Care


To avoid frequent troubleshooting and to ensure the longevity of your inverter, follow these pro tips:


  • Regular Monitoring: Utilize the SolarEdge monitoring platform to keep track of your system's performance and preemptively identify potential issues.

  • Firmware Updates: Keep your inverter’s firmware updated to the latest version to ensure optimal performance and security.

  • Professional Inspections: Schedule regular professional inspections to identify and rectify hidden issues before they escalate.



When to Seek Professional Help


While many inverter issues can be resolved through basic troubleshooting, certain situations require professional intervention. If you encounter persistent problems or complex error codes, it's advisable to consult with a certified SolarEdge technician. They have the expertise and tools to diagnose and fix issues safely and effectively.



Conclusion

Maintaining a SolarEdge inverter requires a balance of proactive maintenance, regular monitoring, and understanding when to seek professional help. By following these guidelines, you can ensure the efficient and long-lasting operation of your solar energy system.


Remember, safety is paramount, and professional advice should always be sought for complex issues.

For further information on solar energy systems, visit our comprehensive Learning Center.

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