AC Freq Too High (Line 1/2/3) — Grid frequency above limit

What does 79/80/81 mean?

The frequency of the AC power from the grid is higher than the allowed limit for your country. This can affect the inverter's performance.

• High grid frequency
• Grid operator issues
• Incorrect country setting

Click steps to track your progress.

1. 1

   **1. Power Cycle Your Inverter:** Locate your solar system's main AC breaker and the AC safety switch on or near your inverter. Turn them both OFF, wait for 30 seconds, then turn them back ON. Monitor if the error clears.

2. 2

   **2. Check Inverter Lights:** Look at the indicator lights or display screen on your SolarEdge inverter. Note any specific patterns, colors, or error codes displayed. Refer to your inverter's user manual for what these indications mean.

3. 3

   **3. Review App Settings:** Open your SolarEdge monitoring app or portal. Confirm that your inverter's country and grid code settings are correctly configured for your specific location. Incorrect settings can sometimes cause frequency detection issues.

4. 4

   **4. Confirm Breaker Status:** Double-check that all AC breakers connected to your solar system (at your main electrical panel and any sub-panel near the inverter) are fully in the 'ON' position and have not tripped.

5. 5

   **5. Contact Your Installer:** If the 'AC Freq Too High' error persists after trying these steps, or if you notice any unusual noises or smells, please contact your solar installer or SolarEdge customer support for professional assistance.