Learn about Growatt error code 426, its meaning, causes, and solutions for PV current sensing issues.
Error code 426 typically indicates a problem with the PV current sensing circuit. This can affect the inverter's performance and efficiency.
To troubleshoot error code 426, check the connections and integrity of the current sensors. Ensure there are no loose wires or damaged components.
The Growatt Error 426 is triggered when the inverter detects an anomaly in the current sensing circuit, often related to the photovoltaic (PV) array's performance. This fault may arise due to improper insulation resistance, which can lead to ground faults, or issues with the current sensors themselves. The inverter continuously monitors the current flowing from the array; a discrepancy could indicate that the current is not matching expected values, which may occur due to wiring issues or malfunctioning components. The inverter's internal logic is designed to protect itself and the system from potential damage, hence the fault code is activated.
Upon encountering a Growatt Error 426, users may observe a flashing LED on the inverter, typically indicating a fault state. Additionally, monitoring apps may show a significant drop in energy production or an alert specifically referencing the 426 error. This can lead to confusion and concern regarding the operational status of the solar system.
Always ensure that a licensed electrician or certified solar installer performs any troubleshooting or repairs on the solar system to maintain safety and compliance with local electrical codes.
To avoid encountering Error 426 in the future, schedule regular maintenance checks on the solar system, including visual inspections of the wiring and connections. Ensure that the PV array is free from debris and shading, and monitor the system's performance through the monitoring app to catch any anomalies early. Additionally, confirm that string configurations remain compliant with the inverter specifications during any system upgrades or repairs.