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Old 08-08-2003, 08:54 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
When you "lock" the temp wheel to the min temp detent many things happen. The pushbutton ignores most temp sensor imputs, locks the fresh air doors shut & closes the heater valve completely. Also closes the defrost flaps completely. Except on bi-level.

In the heating mode max detent, the heater valve & fresh air doors remains WIDE open. So temp sensor imputs have no effect on the heat of the air comming out of the vents.

In a normal mode the system should maintain temperature in the car with-in 2C deg of the desired temp after 8-10 minutes of operation at face level.
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