I think you meant the CO (carbon monixde) detector goes off. This means you have an exhaust leak. It might have been factory installed but it is not a factory generator, so the exhaust pipe might have bends, welds or joints that are leaking. Any mobile RV tech should be able to find and fix it. Wind wouldn't effect it unless the exhaust has been raised to roof level and your fresh air intake is up there - CO is heavier than air. I suspect your CO monitor is near the floor (it should be by code). If it's near a slide out, floor wall joint, etc. they should look at the exhaust near there. I wouldn't expect you will find it so call an expert.
Sorry, went back and looked at the molecular weight and CO is actually lighter than nitrogen or oxygen so it may rise. But have soemone check it out before you suffer.
