Help - how can I get my Pioneer DVD recorder to record the digital channel?

I'd really appreciate some help, as I'm rapidly going bonkers. I've just updated my analogue telly and freeview box with a Sony digital telly, but I cannot set my Pioneer HDD/DVD recorder to record the digital channel. I'd managed to do it with my old system of telly + freeview box so in theory this should be easier as it's only connected to the TV. I've downloaded all the channels on to the recorder via the telly, but it will only record the analogue channels. I'm pretty sure I've connected everything correctly as I can record the digital channel straight from the telly with the 'record what's on TV' button, but I cannot find a way of setting the timer to record the digital channel. I've asked everyone I know who has a digital telly, many who have more technological skills than I have, but no one's found a way of doing it. I'm usually quite competent at this sort of thing, but I obviously need the help of a technological genius. Thanks in advance for any help!