A solar inverter is a critical component of a solar power system that converts the direct current (DC) electricity generated by solar panels into usable alternating current (AC) electricity. Inverters are equipped with advanced monitoring and protection features that can detect and display fault codes to indicate any potential issues or malfunctions within the system. Here's an overview of common fault codes that you may encounter with a solar inverter:


  1. Overvoltage (OV) or High Voltage (HV): This fault code indicates that the solar inverter has detected an excessively high voltage in the system. It could be caused by issues such as a faulty module, shading on the panels, or problems with the grid connection.
  2. Undervoltage (UV) or Low Voltage (LV): This fault code indicates that the solar inverter has detected an abnormally low voltage. It could be caused by issues such as a faulty module, wiring problems, or insufficient sunlight reaching the panels.
  3. Grid Fault or Grid Failure: This fault code indicates a problem with the grid connection. It could be caused by issues such as a power outage, unstable grid voltage, or grid synchronization problems. In such cases, the inverter may automatically disconnect from the grid to ensure safety.
  4. Ground Fault: This fault code indicates a ground fault in the system, which occurs when an unintended electrical connection is made between the electrical circuit and the ground. It could be caused by wiring issues, damaged cables, or faulty equipment. The inverter may shut down to prevent electrical hazards.
  5. Overtemperature: This fault code indicates that the inverter has detected an excessive temperature in its components. It could be due to high ambient temperatures, poor ventilation, or issues with the cooling system. The inverter may temporarily shut down or reduce its power output to protect itself from damage.
  6. Communication Error: This fault code indicates a communication problem between the inverter and other components, such as monitoring systems or smart meters. It could be due to connectivity issues, incompatible devices, or configuration problems.


It's important to note that fault codes can vary depending on the make, model, and brand of the inverter. Consult the user manual or contact the manufacturer or a qualified solar professional for specific information related to your inverter model and fault codes. In many cases, the inverter's display or monitoring software will provide detailed information about the fault code and recommended actions to resolve the issue. It's advisable to seek assistance from a professional solar technician or the manufacturer's technical support to diagnose and rectify any faults to ensure the optimal performance and safety of your solar power system.


Important Links about Solar Inverter Fault Codes:

https://www.futuresolarwa.com.au/growatt-inverter-error-codes/

https://www.futuresolarwa.com.au/fronius-inverter-error-state-codes/

https://www.futuresolarwa.com.au/huawei-sun2000-fault-codes/

https://www.futuresolarwa.com.au/sma-inverter-error-codes/

https://www.futuresolarwa.com.au/solax-solar-inverter-fault-codes/

https://www.futuresolarwa.com.au/solis-solar-inverter-fault-codes/