Learn about Huawei FusionSolar Alarm ID 2066 indicating DC overvoltage, its causes, and solutions.
Alarm ID 2066 indicates a DC overvoltage condition in the Huawei FusionSolar inverter. This can lead to system shutdowns to protect the equipment.
To resolve DC overvoltage issues, check the input voltage from the solar panels and ensure it is within the inverter's specifications. Adjustments may be needed to the system configuration.
Alarm ID 2066 indicates a DC overvoltage condition, which occurs when the voltage from the solar array exceeds the inverter's maximum input voltage threshold. The inverter continuously monitors the input voltage and employs insulation resistance (RISO) measurements to ensure safe operation. If the voltage surpasses the set limits, the inverter triggers this fault to prevent damage to internal components and ensure compliance with safety standards.
Homeowners may observe the inverter’s LED indicator flashing red or displaying an alarm message on the monitoring app. Additionally, there may be a noticeable drop in energy production, as the inverter will cease operation to protect itself from potential damage.
Always consult a licensed electrician or certified solar installer when diagnosing or repairing solar energy systems to ensure compliance with local electrical codes and safety standards.
To prevent future occurrences of Alarm ID 2066, ensure that the solar array is installed according to the manufacturer's specifications, including proper string configurations. Regularly inspect the solar panels and wiring for wear and tear, and maintain adequate shading analysis to avoid excessive irradiance conditions. Additionally, keep the inverter firmware updated to incorporate the latest safety features and performance optimizations.