Actually no...... it's the water level pressure switch.  

I bought a NEW 2009 KM Elite washer in 2010 (floor display) which never worked right out of the box.   (Link to the thread below)   At first I'd get the "SUD" (over sudsing) code with no detergent in it(!!), and later the F35 & F21 codes.   After sending a service tech out, Sears replaced the washer which worked perfectly for nearly a year until..... yes you guessed it, the F35 code again.  It was replaced under warranty so I don't know the cost, sorry.

You can remove the top of the washer and see the switch (photo below).   You can remove the hose that's connected to it and try blowing to see if it's clogged, but I doubt that will fix it and you will probably have to replace the pressure switch anyway.

You can check the bearings by putting the washer into spin and listening to it, or if that won't work, open the door and give the tub a good twist to spin it as fast as you can and listen for any "roaring" or "rumbling" noises.   It should be smooth and quite.

Is it worth it for $100?   Yes probably.   It's been a good machine for me, but then I only run 1 - 2 loads per week in it.   I have 3 other washers connected and run the rest of my laundry each week in those as well.  

The only "down side" if you will, is.... it's VERY fussy about balancing before the spin and can take 5 minutes or more for each spin, especially when the highest speed is selected.   ALSO... if you wash long sleeve shirts, long pants, or sheets etc, they WILL tangle into a big ball and that is a big part of the "trying to balance" problem.   I will often have to stop the washer, open the door, untangle what ever it is and "try" to redistribute, that will usually take care of it.... for that spin.

Helpful Usage Hint : I learned the "Express Wash" uses noticeably MORE water then any of the "Normal cycles".  It's still not a huge amount of water, but more than the "cup of water" many here will say the new FL washers use.    I always use the Express wash cycle, select HEAVY soil and an extra rinse (54 minutes).  The default "Normal cycle" is 50 minutes. 

I hope this helps!

Kevin 

You are very welcome Mitch, I am happy I was able to help!

It took a little time to find this, but these photos show the different water levels for the "Normal, Express and Bulky Items" cycles in my (He5T) washer.   As you can see the "Express Wash" uses significantly more water than the "Normal" cycle.

The "Bulky Items" cycle does use slightly more water then "Express", but it goes through a series of tumbles and pauses during the main wash, as well as limiting the max spin speed to "medium".   Not a bad thing if you ARE washing bulky items, but not so great if you are using it to wash "normal" items.

Kevin

P.S...... on possible bearing noise.   A friend has a 12 year old Maytag Neptune FL washer.   One day I was visiting and a house guest was doing laundry.   When the washer when into spin, there was a pretty loud "roar" coming from the laundry room.   When I opened the door, it sounded like a freight train was rolling through!   Longer story short, he bought all the parts and rented a special bearing tool and I replaced the bearings for him.   Great learning experience and how his Neptune washer is nice and quiet again! 

Mark, I suppose that is always possible, but if it's giving the "SUD" error code along with "F35", it's not the flow meter.   Mine did the exact same thing and it was the water level pressure switch, as I previously mentioned.

Mitch, Champagne color w/stand, NICE!   This is the same machine (model & color) my friend bought before I bought mine.

Kevin

P.S... with a friends help, I removed the smoked plastic from the door so I can see what's happening inside.   It was glued on.

CONGRATS Mitch!   Very good to hear it's working again and I knew exactly what the problem was!    YAY!   

BTW... if anyone is interested, here is the "follow up thread" about my blue washer. 

Kevin