Vent system flashing recirc button????

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wootang

New Member
Joined
Feb 25, 2011
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2
Car
1989 300CE W124
Hi all, have a 1989 W124 300CE with Diavia aircon and the 3 central buttons: demist/ EConomy/ recirc. Recently the recirc button has started flashing, when pressed it will close vents and turn to constant lit (as it should) but when pressed again, it just starts flashing.

What could be causing this?
Is there a reset on the system? how do you initiate this?
Are there any filters in the system? pollen etc if, so, where are they located?

Any ideas would be greatly received, thanks
 

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