External Sync Failed

What does F69 mean?

This Manual Fault occurs when the external AC sync port connection or cable is faulty, or something is improperly plugged into the AC sync port in a single-inverter system. This prevents proper synchronization.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Clear fault and try again.

2. 4

   If these steps fail, the unit requires service.