Learn about SolarEdge Error Code 169, its meaning, causes, and solutions for troubleshooting.
Common causes include sensor malfunction, wiring issues, or communication errors within the system.
Start by checking the sensor connections and wiring. If issues persist, consult the user manual or contact support.
The SolarEdge inverter triggers error 169 due to a fault detected by the FI (Fault Indicator) sensor within the optimizer. This sensor monitors insulation resistance and ground faults. When the insulation resistance (RISO) falls below safe levels, or if a ground fault is detected, the inverter interprets this as a potential safety hazard, resulting in the error code being displayed. The system is designed to protect both the equipment and the homeowner from electrical hazards, including shock or fire risks.
Always consult a licensed electrician or certified solar installer when servicing solar equipment to ensure safety and compliance with local codes.
To avoid recurrence of error 169, conduct regular maintenance checks on the solar array, ensuring all connections are secure and free from corrosion. Implement routine insulation resistance testing to catch potential issues early. Consider environmental factors such as moisture and ensure proper sealing of junction boxes.