Learn about the Solis NO-GRID error, its causes, and how to fix it effectively.
The NO-GRID error suggests that the inverter is not detecting a grid connection. This can occur if the AC breaker is off or there is an issue with the grid supply.
To troubleshoot, first check if the AC breaker is tripped. If it is not, inspect the grid connection and ensure that all wiring is intact and secure.
The NO-GRID error indicates that the inverter has not detected a valid AC input from the Utility Grid. Inverters are designed to disconnect from the grid under certain conditions to ensure safety and compliance with the National Electrical Code (NEC). This can occur if the inverter senses a loss of voltage or frequency outside acceptable parameters, or if there is a ground fault detected through insulation resistance measurements. The inverter's internal safety protocols prevent it from operating without a stable grid connection, which is critical for both operational safety and equipment longevity.
Homeowners may observe the inverter displaying a NO-GRID error on the monitoring app or local display. The LED indicators may show a steady red light, indicating a fault condition, while production drops to zero. There may be no alerts for tripped breakers, contributing to confusion about the issue.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues. Working with electrical systems poses inherent risks, and licensed technician oversight is essential to ensure safety and compliance.
Regular maintenance checks should be performed on the inverter and associated electrical components. This includes routine inspections of all wiring and connections, ensuring that settings are correctly configured, and keeping firmware up to date. Additionally, consider installing surge protection devices to safeguard against grid fluctuations.