Just did a search and found this.
We have the same model of dishwasher and it's just started doing a similar thing. The only thing is that even the quick wash doesn't finish.
A couple of days ago it stuck on rinse for a couple of hours. It was reset but since then any trial programs just stay on wash. According to the manual, quick wash should take 30 minutes but after that time it was still on wash.
I have an extended warranty with John Lewis and the engineer is coming out in a week
. I'll post the outcome of the visit.
It does seem that it's not heating the water though so hopefully it's a simple fix.