Audi 100 Climate Control woes

["Parry, John C" <John.Parry@Unisys.com>]

Hi all,

With the warm weather returning my climate control system is acting up on my
1989 Audi 100. Can anybody tell me what the 09 and 15 codes mean appearing
on channel 01? These flash alternatively when using the diagnostics. 

A post sent several days ago on the CC codes must be for an earlier system
as it did not have 09 and 15 listed for channel 01. I also found out that
one of the channels is actually a digital speedometer

Thanks in advance.
John Parry