Learn about the Solis OV-BUS bus overvoltage error, its causes, and solutions.
Bus overvoltage can occur due to internal component failure or external electrical issues. It's important to check the system's wiring and connections.
Start by inspecting the inverter for any visible damage. If the issue persists, consult the manufacturer's guidelines for further diagnostics.
The OV-BUS fault indicates that the inverter has detected a voltage level exceeding its operational limits on the bus. This could be due to a variety of factors, including RISO measurement failures that indicate insulation issues or ground faults. The inverter continuously monitors grid frequency and voltage levels; exceeding the maximum input voltage can result in the inverter shutting down to protect its internal components from damage.
When the Solis inverter triggers the OV-BUS fault code, users may observe a red LED indicator blinking rapidly, indicating a fault state. The monitoring app may display an alert indicating 'Bus Overvoltage,' along with a drop in power production, often reflected in the daily energy yield report.
For any electrical work, including troubleshooting and repairs, always hire a licensed electrician or certified solar installer to ensure safety and compliance with local codes.
To avoid future OV-BUS issues, ensure regular maintenance of the solar array, including periodic inspections of wiring and connections. Utilize surge protection devices and ensure proper grounding of the system. Additionally, monitor grid voltage levels and consider installing a voltage regulator if persistent overvoltage conditions are detected.