The schematic I have shows F11 provides power to the Electronic Unit for Blower Speed Control. This unit interconnects the Blower Motor, Blower Resistors, Pushbutton Control Assembly & Temp. Control.

I noted that you mentioned no 12VDC to the Pushbutton Control. F10 provides power to the Pushbutton Control at pin 12 of connector #2 (black/red wire). This same fuse, powers the Temp. Controller.

From your description, I would suspect F10. However, if you are still having problems, I could possibly scan the schematic I have and send it as an attachement. I'm not sure how good the detail will be. MBUSA has the manual available for download but you will need DSL or better.

__________________
Sam

84 300SD 350K+ miles ( Blue Belle )