I had to replace my EP6002 a while back and my local CH specialist told me it was no obsolete and replaced by the EP2 which shares the same backplate and wiring so it was an easy swap. Although the EP2 setup was a bit fiddly even after discovering a piece of paper with "addendum to the instructions", there seems to be an inherent problem in that the "off 3" time for hot water will not go beyond 10:30pm. There's no such problem with the CH programming. I've had this same problem now with no less than three EP2's. Anyone got any ideas? The local CH shop scatched their head and said they would get in touch with Potterton (Baxi?) but I'm still waiting to hear back.