Hi,
Just seen your old post..probably too late now! I had exactly the same issue. Turned out to be the wiring feeding to the Control panel. There was a connecting plug/socket that joined two batches of wires together. This was soaked and well corroded. Two pins were destroyed and the climate control just stopped working one morning. Like you, no temp reading on the dash either. I'm sure you've had it fixed by now, but if not, hope this helps.