SolarEdge Error Code 1x1E (17, 18, 19) refers to an isolation fault, which typically indicates a problem with the electrical isolation between the solar panel system and the ground. This can occur due to moisture ingress, damaged cables, or connectors.
Here are some steps to troubleshoot this issue:
1. Check System Isolation
- Turn off the system: Before inspecting, turn off the solar inverter and any connected circuits.
- Measure insulation resistance: Use an insulation resistance tester (megger) to check the insulation resistance between the DC positive, DC negative, and ground. The values should be within the manufacturer’s specifications (usually in the megohms range).
2. Inspect the Wiring and Connectors
- DC connectors: Inspect the DC connectors for signs of water ingress, corrosion, or physical damage.
- Cabling: Check the DC cabling for any signs of wear, damage, or loose connections.
- Grounding: Ensure that all grounding connections are secure and intact.
3. Inspect the Solar Panels
- Visual inspection: Look for any visible damage to the solar panels, such as cracks, hotspots, or burn marks.
- Panel isolation: Disconnect the panels and test each one individually for isolation faults using a megger. This can help identify if a specific panel is causing the issue.
4. Check the Inverter
- Firmware update: Ensure that the inverter firmware is up to date. Sometimes, firmware updates can resolve specific fault codes.
- Reset the inverter: After ensuring all connections and components are in good condition, reset the inverter to see if the fault clears.
5. Environmental Factors
- Moisture: Check for any signs of moisture or water ingress in junction boxes, inverters, or DC connectors.
- Rodents: Inspect for damage caused by rodents, which can chew through insulation and cause isolation faults.
6. Professional Assistance
If the above steps do not resolve the issue, it may be necessary to contact a professional solar technician or the SolarEdge support team for further assistance. Isolation faults can sometimes be complex and may require advanced diagnostics and repair.
Preventive Measures
- Regular maintenance: Perform regular maintenance and inspections to identify potential issues before they cause faults.
- Proper installation: Ensure that all components are properly installed according to manufacturer guidelines.
Summary
- Turn off the system.
- Measure insulation resistance.
- Inspect wiring and connectors.
- Inspect solar panels.
- Check the inverter.
- Consider environmental factors.
- Seek professional assistance if needed.
By following these steps, you should be able to identify and address the root cause of the SolarEdge isolation fault error. For accurate diagnosis and resolution, it’s always best to consult the SolarEdge support documentation or contact their technical support team, as they can provide detailed instructions tailored to the specific error code and system configuration