According to :
I have a Maytag Neptune washer that is about 6 years old. It came with
our house when we bought it. As of yesterday, it is filling with hot
water on any cycle that calls for cold water and vice versa. The hoses
have not been touched and I know it was working right previously. I
thought about just swapping the hot and cold hoses, but this must be
indiciative of a problem. Has anyone ever heard of this happening ?
Perhaps a bad circuit board ($$$) ? I searched but could find nothing
that matches this scenario.

It seems unusual that they might be operating in reverse. I'd
pull the washer out and check that the hoses are connected the
right way around first, even tho you're sure it hasn't been
touched.
--
Chris Lewis,

Age and Treachery will Triumph over Youth and Skill
It's not just anyone who gets a Starship Cruiser class named after them.