Learn about SMA Event 27103, its meaning, potential causes, and solutions for resolution.
SMA Event 27103 typically indicates a parameter change that is being adopted by the inverter. This event may affect the inverter's performance and requires attention.
To resolve SMA Event 27103, check the inverter settings and ensure that the parameter changes are correctly configured. If issues persist, consult the user manual or contact support.
The SMA inverter triggers fault code 27103 primarily due to issues with insulation resistance, which is critical for safety and performance. The inverter continuously monitors insulation resistance (RISO) to detect ground faults. If the resistance falls below a predetermined threshold, the inverter interprets this as a potential ground fault, leading to disconnection from the utility grid to prevent damage or safety hazards. This fault can also arise from incorrect settings or environmental factors affecting the grid frequency, which the inverter must adhere to for stable operation.
Homeowners may notice the inverter displaying fault code 27103 on its LED screen or monitoring app, which indicates an issue with insulation resistance. The LED may blink in a specific pattern, and there may be a noticeable drop in energy production, indicating the system is not operating efficiently.
Always consult a licensed electrician or certified solar installer when dealing with electrical components to ensure safety and compliance with local codes.
To avoid similar issues in the future, ensure regular maintenance checks on insulation resistance, inspect wiring integrity, and verify inverter settings during routine service. Consider implementing surge protection devices to safeguard against environmental fluctuations.