why is my ac fan only turning on when it set to high or number 4? on 1997 Honda Accord

i try to run the air on low or 1 and nothing turns on so i move it to the other setting which are 2 and 3 yet same results so anytime i want to use the ac or heat i can either have it on high blast or just off please help

Asked by for the 1997 Honda Accord