Whirlpool Duet Sport ht - F20 flashes and washer stops

"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. If the pressure switch has not tripped after 6 minutes, the error code is displayed. This can be a potential problem with the following:


If you have NO water in the wash tub, check the following:

- Inlet water valve may be clogged. Clean inlet screens if necessary.
- Make sure water taps are on.
- Check inlet hoses for kinks or clogs.

If you HAVE water filling the wash tub, check the following:

- Make sure you don't have a siphoning problem. Click the following link for instructions:


http://www.fixya.com/support/r587481-prevent_washer_siphoning

- Verify Drain Pump operation.
- Verify the Pressure Switch hoses are intact and connected properly.
- Verify wire harness connections at the pressure switch, inlet valves, drain pump and Central Control Unit (CCU).

To access the Drain Pump - UNPLUG the washer and take the lower panel under the door off by removing the three screws under the bottom edge. HINT: Propping the front feet of the washer up can make access much easier. I use a couple small blocks of wood. With the screws removed, the panel should drop down then come off. If it sticks, tap either side and it should come free. The pump is located directly under the wash tub in the front of the washer. Verify the electrical connections are good and that the pump is running. Click on the following link to check the pump for obstructions:

http://www.fixya.com/support/r385845-checking_drain_pump_in_whirlpool_duet

To access the Pressure Switch - remove the three screws in the top panel along the back of the washer. With the screws removed, the panel should slide back, then, lift off. The pressure switch is located on the right-hand side of the washer in the rear. It is a round plastic device with electrical connections and a plastic air hose attached. Verify the electrical connections are intact, and the air hose is attached and not cracked or leaking.

To access the Central Control Unit (CCU) - with the top panel of the washer removed, the CCU is located directly behind, and just above the rear of the wash tub. There should be a tech sheet directly behind the lower panel or attached to one of the interior cabinet walls. Please refer to this sheet to learn how to perform diagnostics and to verify the wire connections at the CCU. In addition, the tech sheet will also assist in how to locate the components mentioned, and the specific measurements required determining if the components are good or bad.


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