The search feature works wonders. Lots of information on this subject.
However look at this..................
http://w123maintenance.blogspot.com/2007/10/automatic-climate-control-unit-repair.html

__________________
DO IT RIGHT THE FIRST TIME, DON'T BE A HACK
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'82 240D Stick
'85 300D Auto
Drove my first MB at age 16 1960 300SL W190