I have a 1998 S320. A couple of weeks ago, a fan (one that appeared to be blowing at the windscreen) stayed on continuously as long as the ignition stayed on. No matter what temperatureor any other AC settingI made,I could not turn this fan off. It only went off when the ignition was turned off.This went on for a couple of weeks. Now,the AC won't work at all (with no sign of any fan working). The control unit goes on when ignition is on, and all lights and indicators appear to be working. I can even change the temp and fan speed settings.However, the fan/bloweris not workingat all. I checked the fuse in the boot, and that seems to be good. Is there another fuse (for the blower) somewhere else? Can anyone offer any advice?

Many thanks in anticipation.