Learn about Growatt Error Code 202, its meaning, causes, and solutions for high PV voltage issues.
Error Code 202 indicates that the PV voltage is exceeding the maximum rating of the inverter. This can lead to system shutdowns to protect the equipment.
To resolve high PV voltage issues, check the configuration of your solar panels and ensure they are not producing excessive voltage. Additionally, inspect for any shading or wiring issues.
Error 202 signifies that the inverter has detected a voltage level from the PV array that exceeds its maximum input rating. This can occur due to various electrical phenomena, including excessive solar irradiance leading to increased voltage output, or incorrect configurations in the string combiners that may cause voltage inconsistencies. The inverter employs voltage sensing to protect itself from damage, triggering the fault to prevent unsafe operating conditions. The National Electrical Code (NEC) mandates that inverters must operate within specified voltage limits to ensure safety and compliance.
When a Growatt inverter displays Error 202, users may observe the inverter's LED indicator flashing a specific pattern, typically indicating an error state. Monitoring apps may show alerts indicating high PV voltage, and system performance may drop significantly, with production levels failing to meet expectations.
Always consult a licensed electrician or certified solar installer when troubleshooting electrical issues. Working with high voltage systems can be dangerous and should only be performed by qualified licensed technicians.
To avoid encountering Error 202 in the future, ensure that the PV array is properly sized for the inverter and that the system complies with NEC regulations. Regular maintenance checks should be performed to assess the condition of the PV modules, connections, and string combiners. Monitoring system performance through apps can help identify potential issues before they escalate.