Learn about the Sol-Ark F20 error code, its causes, and solutions for DC input overcurrent faults.
The F20 error typically indicates a DC input overcurrent condition, which can occur due to excessive current from the solar panels or a short circuit.
To troubleshoot the F20 error, check the wiring for any shorts, ensure the solar panel output is within specifications, and inspect the inverter settings.
The F20 error code is triggered when the inverter detects an overcurrent condition on the DC input. This can occur due to several electrical logic failures, including a high insulation resistance (RISO) measurement indicating potential shorts, or ground fault detection mechanisms identifying excessive current flow. The inverter continuously monitors input current to ensure it remains within predefined limits. When these limits are exceeded, the inverter shuts down to protect itself and the connected components from damage, adhering to safety protocols outlined in the National Electrical Code (NEC).
Always consult a licensed electrician or certified solar installer when troubleshooting or repairing solar systems to ensure compliance with safety standards and proper handling of electrical components.
To prevent future occurrences of the F20 fault, ensure regular maintenance of the solar array, including periodic inspections for module integrity and connection quality. Properly size DC cables and maintain clean connections to minimize resistance. Regularly monitor system performance through the inverter's app to catch potential issues early. Additionally, ensure that inverter settings are periodically reviewed, especially after any changes to the array configuration.