F20 - Kenmore Elite HE5t Washer

"F20" is a No Water Detect error. It is an indication that you either have no water coming into the washer, or very little water at all. The following link explains how to troubleshoot:

http://www.fixya.com/support/r3608632-f20_error_code

This is one of those error codes that can be tricky to troublehsoot due to the many potential causes of the problem. My adivce to you is to eliminate the easy common sense items first.

Each one of these washers come with a technical data sheet inside. To access, you will need to remove the lower toe panel under the door. The access screws are located under the bottom front edge of the panel. You may have to prop the two front fett of the washer up for better access ( a 2x4 works well for this). With the screws removed, the panel should drop down, then come off. If the tech sheet isn't directly behind the panel, it will be affixed to one of the interior cabinet walls. The tech sheet lists all error code definitions, troubleshooting data, diagnostics procedures and wiring diagrams. I mention the tech sheet because you may need it to troubleshoot this error code.

Read through the information provided and let me know if you have any further questions. I hope this can help you.