Learn about the SolarEdge 18xAB DC Input Overvoltage warning, its causes, and solutions.
The 18xAB error code indicates a DC input overvoltage condition in the inverter. This can occur due to excessive voltage from the solar panels.
To resolve this issue, check the voltage levels from the solar panels and ensure they are within the inverter's specifications. Additionally, inspect for any damaged components.
The 18xAB error code signifies that the inverter has detected a DC input voltage that exceeds its maximum allowable threshold. This condition can arise from various factors, including excessive irradiance causing the solar modules to produce higher voltages than expected. The inverter continuously monitors the DC input voltage, and if it surpasses the configured limits, it triggers an alarm to protect both the inverter and the solar array. The inverter's internal logic includes protection mechanisms against overvoltage, which are critical for maintaining system integrity and safety.
When a SolarEdge inverter displays the error code 18xAB, users may notice a red LED indicator flashing or a warning alert in the monitoring app indicating a DC input overvoltage condition. Additionally, there may be a significant drop in energy production, as the inverter will enter a protective shut-down mode to prevent damage.
Always consult a licensed electrician or certified solar installer when working on solar electrical systems to ensure compliance with safety standards and local electrical codes.
To prevent future occurrences of the 18xAB error, conduct regular maintenance checks on the solar array and inverter, including visual inspections of the modules and wiring. Ensure that the inverter firmware is up-to-date and that the system is configured according to the manufacturer's specifications. Consider installing surge protection devices to safeguard against voltage spikes.