Mondeo air con?

I have a 2003 Ford Mondeo ghia tdci.
I had the air con turned off for a bit over the summer.Whilst it was off i changed the radio. A few weeks later i turned the air con on but nothing,no display or fans.I checked to see if id blown a fuse or dislodged any connectors but all seemed ok. An auto electrician said it could be the blower motor,but surely the display would be working. Any ideas? Thanks