Learn about the Solis inverter DCinj-FAULT error, its causes, and solutions.
The DCinj-FAULT indicates an issue with the injection current in your inverter. This can affect the inverter's performance and may require troubleshooting.
To troubleshoot the DCinj-FAULT, check the DC connections and ensure they are secure. Additionally, inspect for any potential short circuits or grounding issues.
The DCinj-FAULT code is triggered when the inverter detects an abnormal injection current, which can signify issues with the insulation resistance of the DC circuit, potentially leading to unsafe operating conditions. The inverter employs ground fault detection mechanisms that monitor the current flow and can identify if there is leakage current exceeding safe thresholds. If the insulation resistance (RISO) measurement falls below acceptable limits, the inverter will trigger this fault to prevent damage or hazards.
When your Solis inverter displays the DCinj-FAULT code, you may observe specific visual indicators such as a flashing LED indicator or an alert on the monitoring app indicating a fault condition. Additionally, you might notice a significant drop in energy production, as the inverter will cease operation to protect itself and the system.
Always ensure that any troubleshooting or repairs are conducted by a licensed electrician or certified solar installer to maintain compliance with NEC regulations and ensure safety.
To avoid encountering the DCinj-FAULT in the future, conduct regular maintenance checks on the inverter and solar array, ensuring all components are clean, dry, and properly secured. Periodically verify insulation resistance and monitor voltage outputs across strings to catch potential issues early. Proper system techniques and using high-quality components can also mitigate risks.