Shutting Off My Converter to Start AC w/ Generator???

Turn all breakers OFF. Except the Main and Air Conditioner. Then give it a go.

If blower fan and compressor start together you can also try putting the blower fan on before you drop the thermostat to call for the compressor. But this is really marginal if needed. If it works on a cool day it may not on a hot day when really needed. Same goes for elevation.