733 Hot weather operations and recirculation fan??
I see some different techniques for cooling the 733 cabin on the ground.
Some of our 733’s only have a recirculation fan and no gasper fan. I would like to meet the person that came up with that bright idea.
IMO, The best cooling seems to come from running the Left pack in High on the APU, left engine bleed valve and isolation valve closed, and the Right pack in High.
But some captains claim the recirculation fan cuts out when one of the packs is put in High on the ground. That doesn’t seem to be true in the above configuration.
What controls the auto cutout of the recirculation fan on the ground?