We have a British Gas RC Plus programmable wireless thermostat -but I think it's actually a Drayton Digistat +3RF that's been rebadged by BG. BG had set it up so we had one set of timings for weekdays and one for weekends i.e. in 5-2 mode. We had to change the batteries the other day and now it's reverted to 7 day mode, i.e. we have to set timings for each day separately. I can't find any instructions anywhere on how to set it back to 5-2 mode. Can anybody help?