from experience, the generator will have no correlation with the roof a/c unit's thermostat, or the interior temperature, or anything to do with anything other than the generator's own capabilities - if it is shutting down, then it is due to either a manual 'off' of the switch, or a overheating situation, which should also render a flashing 'code' on the interior switch. Since the gen won't start for quite a while, it certainly sounds like overheating and a cool down period is required. The 'code' will reveal this, as it has happened to my own QD6000, and the Onan customer service said that this 'cool down' period is required before the gen will restart.
When you are running the roof air, and possibly other things like the battery charger, electric water heater, and various 120v devices, all at once, during hot weather conditions, and especially while PARKED, with little air movement, the generator, which is an engine that needs air flow to keep it cool, can certainly have times when it will overheat.
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the Turners...
two Campers, two Electric cars
former diesel pusher traveler
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