Learn how to troubleshoot and resolve SolarEdge Error Code 18x79 related to internal fan failure.
Error Code 18x79 indicates a failure in internal fan 1 of the inverter. This can lead to overheating and reduced performance.
Regular maintenance and ensuring proper ventilation can help prevent fan failures. Check for dust buildup and ensure airflow is unobstructed.
The SolarEdge inverter relies on its internal fan to maintain optimal operating temperatures. When the inverter detects that the fan is not functioning correctly, it triggers the 18x79 error code as a safety precaution. This fault can arise from various issues, including inadequate airflow leading to overheating, or electrical faults that affect the fan's operation. The inverter continuously monitors its internal components, including temperature sensors, to ensure safe and efficient operation. If the fan fails, the inverter will shut down to prevent damage to its internal circuitry and maintain safety standards as per the National Electrical Code (NEC).
Homeowners may notice that the inverter's LED indicators are flashing a fault code of 18x79. In addition, monitoring apps may alert users to an internal fan failure, and there may be a significant drop in energy production due to the inverter entering a protective shutdown mode. The inverter may also emit unusual sounds, such as grinding or whirring, indicating fan malfunction.
Always ensure that work on the inverter is performed by a licensed electrician or certified solar installer to maintain compliance with safety standards and regulations.
To avoid future occurrences of the 18x79 error code, ensure regular maintenance of the inverter, including cleaning the ventilation areas and checking the fan operation during routine inspections. Monitor the ambient temperature where the inverter is installed and ensure it is within the manufacturer's specified range. Additionally, consider installing the inverter in a shaded, well-ventilated area to enhance cooling efficiency.