Whirlpool dishwasher wont drain

I could use some suggestions on this dishwasher..

It was not draining so I took out the hose and sump and check ball.. it was coated with grease and hardened cornbread powder?

I even turn the impeller and it does not appear to be stuck at all. I put everything back and ran the dishwasher..

it still would not drain!

I am curious to know how to check the check valve for this unit.. It is integraged with Manufacturer Number 8520839..

thanks in advance

Does it wash?

Did you clean the ball?

Gene.

washes fine.. just does not drain..

I cleaned the ball and the sump area.. How do I determine if the check valve is good or bad?

I may have to take the pump assembly out to check (I hope not).. is there a trick to removing the sprayer assembly?

thanks in advance

How much water is left inside the dishwasher?

Where the drain hose is connected to? Do you have an air gap installed on top of the sink?

Gene.

a lot of water.. 1 to 1.5 inch..

the drain hose is connected directly to the garbage disposal.. no air gap installed on top of sink.

thanks again

Disconnect the drain hose from the garbage disposal and put it in a large bucket. Check how it will drain.

Gene.
P.S. Did you replace the garbage disposal recently?

No the garbage disposal is old..

I will put the hose in the bucket and check.. Since I am out of town for a few days..

just curious..

if there was no flow, what should I check next?

else what if there was very little flow?

One more thing you may want to check: does the motor run when the control calls for drain?

Gene.

stupid question here but how do I activate the drain function?

this dishwasher only has the rotary knob and drain function is not on it..

The motor in this dishwasher is reversible what means it turns in opposite direction for drain. Slowly turn the knob. The motor should stop for a few seconds and switch from wash to drain.

Gene.

Did you figure out the problem? I have the same problem(same model Whirlpool DU811SWKU0). It leaves about 1 to 1.5 inches of water. I hear the motor turn. I took it apart, made sure check valve, ball, etc was clean. Even took out the drain pipes, gap and made sure it was clear. What could be wrong?

Thanks in advance!

yes.. mine was a clogged drain line.. it was completely clogged with stuff.. thus the pump could not push the water thru. take your drain line out side and use a garden hose to make sure it is not clogged.

hopes this helps