Re: whirlpool american f/f
Too late now but did you check if the air diffuser was working before ordering?
Easy test is get a small mirror and look into the air diffuser then press vacation button and watch it close then press again and it should open.
If faulty the usual cause is stripped gears in the motor unit because it is not strong enough to operate if iced up.
I never throw the broken ones away as I can often patch up a broken unit with salvaged bits.
Every little bit helps as the advert says 😉
Ps. all the new ones are labelled “Made in China” so don’t expect an improvement in quality or a price reduction 😈
Steve