Can I fix my Diplomat ADP 8224?

Hi my diplomat digital screen has been playing up for sometime now, showing all the symbols. I have been able to put it on the cycle I usually use, but for the past week or so, my machines cycle has gone on for 3 hrs and I've had to turn it off manually, then put it on number 1 to drain for a couple of minutes. My husband noticed the other day that the machine is cold and not hot . Can we purchase a new digital programme for this machine or can you tell me where we can purchase another one, as we've had this nearly 11 yrs now. I would appreciate some help thank you.