I am getting a code F20

[dhflowers]

I am getting a code F20 on my washer.  I have checked the wash source and it is good.  Checked the sceens and they are clean.  So now what should I do?

Thanks
David

Model Number: WFW9400S

[Repair-man]

F-20 is telling you that during the first 30 seconds of fill, no water level was perceived in the ub. This is usualy caused by 2 separate issues...

1. Drain hose too low, causing the water to siphon out as it fills
2. Bad water pressure switch.

In rare cases, the end of the water level hose which goes under the tub can become clogged with crud. To see if it is clear, find the pressure switch under the top panel, disconnect the airline and blow down thru it. The air should pass freely.
The tech sheet in the lower compartment will show you how to check the pressure switch.

[JWWebster]

Once you have blown out the tube and secured it to the water pressure switch be sure to pump out the water remaining in the tub before you retry.

[dhflowers]

OKay I blow on the tube and I am still getting the code F20.

[JWWebster]

Blow IN the tube to get the trash and sand out of it so that the water can build pressure and cause the switch to shut down the water when the tub fills.