Learn about Sungrow Error Code 002, its meaning, causes, and solutions for isolation faults.
An isolation fault Riso indicates a potential issue with the inverter's insulation. This can lead to safety risks and requires immediate attention.
To troubleshoot, check the inverter's insulation resistance and ensure all connections are secure. If the fault persists, consult a technician.
The RISO check is a crucial safety feature in the SG2.0RS inverter. It measures the insulation resistance of the DC circuit relative to ground. If the insulation resistance falls below a predetermined threshold, the inverter interprets this as a potential ground fault, which can lead to hazardous conditions such as electrical shock or fire. The inverter will automatically shut down to protect both the system and personnel. This fault can arise from various factors, including moisture ingress, physical damage to the modules, or inadequate grounding.
When the Sungrow SG2.0RS inverter triggers Fault 002, users may observe the inverter's LED indicator flashing a specific pattern that signals an isolation fault. Additionally, the monitoring app may display an alert regarding the isolation fault, and there could be a noticeable drop in energy production, indicating that the inverter is unable to operate efficiently due to the fault.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical faults to ensure compliance with safety regulations and prevent hazards.
To avoid future isolation faults, ensure that all systems adhere to NEC grounding requirements. Regularly inspect the PV modules and wiring for signs of wear or damage, and check junction boxes for moisture. Implement preventive maintenance schedules to test insulation resistance periodically and address any issues promptly.