AC Breaker Trip

What does F77 mean?

This Automatic Fault indicates that a primary or secondary AC1 or AC2 breaker has tripped in a multi-unit installation, likely due to an overload condition. The inverter will attempt to auto-clear the fault once the breaker is closed.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the fault was triggered by primary unit, close the breaker.