The generator auto start should show up as a separate device on your system control panel.
You should see this if you back out of the menue's. You should reach a point where you can select your inverter, or the gen auto start.
Then I think you can reset the auto start unit, which should clear the alarm.
I'm not a big fan of the Xantrex gen auto start module. Not that there is anything inherently wrong with it, only because there are in my opinion better gen auto start modules on the market, such as the units by Deep Sea Electronics, and only then because I'm super familiar with their controllers, having a couple decades hands on time with them.
I do not have a challenge with using a auto start on your boat, but the ones I mentioned in my opinion have a more positive "auto" vs "Manual" or "lockout" mode. As Tom mentioned above a gen start on a closed sea cock would put you in a forced outage situation on your generator.
On another note, if your generator is diesel there is zero need for the blowers to run during its operation.