
to NICO Steve!
I have done a good bit of research on this - and repaired some of the climate controllers - and there does not appear to be a way to switch them. I've been told that a component on the board has to be soldered to a different point to the circuit board - but I've never had a Celcius based controller to play with.
If by chance you have your old controller that displayed in Celcius and want to ship it to me I would be happy to see if I can figure it out.
Heath