Washer temp setting changes by itself

I also have a Whirlpool washer/dryer for my condo, although I don't know the model number of mine. I had the same problem -- after it was precisely a year old, suddenly one day the hot and cold started coming out reversed. I was able to fix mine by more or less temporarily fiddling with the water pressure. What I did was one time, when the rinse cycle was running and the washer was filling up with hot water (grrrr...), I completely shut off the valve supplying hot water. So at that point the water stopped filling into the washer, and then I started tinkering with the cold water, twisting the valve off and on a few times. Then BINGO, suddenly the cold water "kicked in" and for the remainder of the rinse cycle, it filled the washer with cold water. I then turned the hot water valve back on, and since then it has been running correctly.