Washer has water in it from me putting on a wash but it will not drain when its time for that part of the cycle. So, I turn machine off, turn it back on and place on spin cycle only. After a minute, the machine starts draining. I can feel the pump running and hose moving while the water level lowers below tub. But If I turn back on a normal wash.....it stops because it won't drain. I have been instructed to check hose to pressure switch. Can you remove hose from switch and blow in it to check for a blockage? Obviously, I have no clue what I am doing. I can change the pump if thats the problem. Just confusing because the pump does pump, just not during a wash cycle. Thanks in advance.