climate control

[Edward Birch]

Good evening everyone.....

More electrical problems with my 1991 100.   The climate control system
doesn't seem to hold temperature at times.  Usually temperatures of about
75-80 malfunction.   The outside temperature diode flashes; somekind of
code, I suppose.  But, I have no idea on how to read this code, and what the
code means.   Did Audi purchase electrical products from Lucas of England??

Some advice, please.

Ed. Birch....91-100.