This is just a quick post to let anyone who may have problems with their Dishdrawer, that I stripped mine down, found out how it all works and put it back together minus the problem of F1 code.
I do need a new lid motor though as one side isnt working. (anyone know where I can get one?)
These are a couple of points worth noting.
When starting the dishwashing cycle, just after pressing start, make sure you can hear two whirring sounds, one on each side, as this is the motors operating and internal splash lids closing (supposedly). These seal the top of the drawer off when the spraying is taking place inside.
Also, a small point to note but one which may be overlooked, make sure the machine is fitted level when installed. A fairly obvious but oft overlooked thing to mention I know, but I noted that slight deviations in level prevent the internal lids closing squarely onto the drawer tops, letting water leak into chassis of machine and drip to base, where the flood sensor is situated.
The only problem I had was having to cut the back off as its spot welded on. I then drilled and used self tapping screws to refit the back.
Hope this helps a bit.