No I am not sure. All I know is that I shut the generator off, toggled the (70 amp) internal generator breaker, and then switched the generator back to é„*uto? whereupon it started again (since the power from the power company was still off). But this time it did send power into the building. So I don稚 really know if it was just the breaker that had tripped or if the act of shutting off and then restarting the generator somehow å��ixed an automatic transfer switch problem.
Loose connections, always worth checking (Safety First).
If they are not too spendy, I'd probably pick up a spare Transfer Switch, just to keep Murph appeased.....
Rgds, D.