Our Whirlpool duet washer sometimes shows error code SUD and sometimes F-35. We cleaned out the drain at the bottom front of the washer, that helped for a while. The problem is intermittent. Sometimes it actually works fine, sometimes it gives the code F-35, 3 -5 times, then works. We took the top off and cleaned the whole drain hose from the pump to exit. Nothing in there. Put it back together and now we have the SUD code. Now what do we do? Is this a Pressure switch problem. I hate to replace that and find it is soap in some line someplace...
Thanks