blinking red light on a air circulation button and it cut the heating blower off on 1992 Mercedes-Benz 300E 4MATIC

I have a 1992 300e 4Matic and when the blinking red light comes on the air circulations button it cuts off the heat and cuts the engine off when come to a stop. What could be the problem. Please help. Thanks, Rith.

by in Chicago, IL on November 25, 2012
1 answer
ANSWER by , November 26, 2012
seek daig and est from mbz