Learn how to troubleshoot and fix bypass faults in Sungrow inverters effectively.
A bypass fault can occur due to issues like wiring errors, component failures, or environmental factors affecting the inverter's operation.
Regular maintenance, proper installation, and monitoring can help prevent bypass faults in your inverter system.
A bypass fault typically occurs when the inverter detects a ground fault or insulation resistance (RISO) measurement that falls below acceptable limits. This is a protective measure to prevent potential electric shock or fire hazards. The inverter continuously monitors the insulation of the DC circuit and the integrity of the array. If it identifies that the insulation resistance is compromised, it will trigger a bypass fault to isolate the inverter from the system, ensuring safety and preventing further damage.
Homeowners may observe the inverter displaying a fault code on the interface, often accompanied by a blinking LED pattern indicating a bypass fault. In some cases, the monitoring app may show a significant drop in energy production or an outright halt in output, signaling an operational issue.
Always consult a licensed electrician or certified solar installer when performing maintenance or troubleshooting on solar inverter systems to ensure compliance with local electrical codes and safety standards.
Regular maintenance checks should be scheduled to inspect wiring integrity, ensure proper insulation resistance, and confirm that inverter settings are correctly configured. Install surge protection devices to mitigate the risk of overvoltage and perform routine visual inspections of the solar array for debris or physical damage.