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Try this, It's involved but it worked on my Kenmore HE4tDrain the machinePull the filter (have a sheet pan, wet vac and towels handy, there's a lot of water)Disconnect the drain boot from the pump and tubDisconnect the pump drain hose (waste)Disconnect the pump electricalWash everything (not pump motor) in a 25% bleach solutionReassemble.Put 1 gal boiling water, 1 gal hot water and 1/2 cup bleach in washer compartment. check for leaksWash entire compartment with the bleach water and spin the drum time to time for 15 minutesAdd TechnoFresh (which claims to loosen gunk) to the powdered soap dispenser, through a bunch of rag towels in and run the machine on the hottest cycle.This process works well until machine is stinky again (about 6 months depending on bleach usage)BTW "the leave door open trick" only helps the door gasket and does not address the constant reservoir of fermenting water in the bottom of the machine
F28 error means the CCU(central control unit) lost communication the the MCU(Motor control Unit) for an HE2 washer. I would look inside the lower front panel and get the tech sheet and run a diagnostic test per the instructions... See what comes up. Review troubleshooting for the F28 make sure you did not miss anything. I hope this helps
Remove your bottom front kick panel, usually two to three screws on the very bottom front of the washer. Unplug washer, have a lot of towels ready to mop up the water that comes out of the washer. In the very center front of the washer is the round plastic drain pump filter for the washer. Unscrew this a little,(turn the plastic screw counterclockwise) and let the water drain completely as you soak it up with your towels. When it is completely drained, unscrew the filter the rest of the way and clean out all the debris in the filter and inside its receptacle. Reinstall everything and test. I recommend you do this at least every 6 months. If this doesn't work then you may have a bad water pump. Good Luck, Appliance Specialists
F28 is a serial bus error from the CCU (Central Control Unit) to the MCU (Motor Control Unit).
All you need is some Electronics contact cleaner spray and a 1/4 inch socket to remove the top of the machine and the back of the machine. The CCU is the computer looking box at the top front right hand corner. Find connector M13, (has red marking on it and only 3 wires) disconnect it by pushing the retainer tab back and pulling gently on the connector. Spray the contacts of the connector and computer with connector cleaner. Then re-assemble connector. The MCU is in the back lower left corner. Find the connector with 3 wires and red mark, and remove this connector in the same way you did the other, spray it and re-install. Put the back and top back on.
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2. Take of the toe panel in the front by removing the three screws.
3. Get a bunch of towels (I mean a bunch!!!)
4. The pump is in the center, and it has a plastic grip handle that one can unscrew to remove the filter. As you unscrew it, LOTS of water will come out. Be ready with the towels. A cookie sheet helps to collect the water too.
5. Clean the filter assembly.
6. If one wishes to check the inlet of the pump, remove the back panel, about 12 screws. (Note, the following works for replace the pump as well)
7. Remove the large bellow from the bottom of the tub that goets to inlet of the pump by removing the clamp
9. Lift up on the plastic cover that covers the wires that power the pump. There may be a small plastic catch that is lifted up as to allow the connector to become free.
8. Remove the Torx screw that holds that is the center just under the filter screen.
9. Pull the pump forward.
10. Unclamp the pump outlet hose.
11. Remove pump
12. Unclamp the large bellow on the pumps inlet and inspect for debris.
13. Clean pump and fitler w/o getting water on the pump.
14. Install in reverse order. Remember, it is much easire to put the inlet bellow and outlet hose on the pump before you put into the washer