Temperature Mixing

IHKA E38 TEMPERATURE MIXING







Temperature mixing on IHKA E38 is similar to that on E31, except:

- The E38 mixing flaps have two layers, instead of three.
- There is a temperature sensor in each side of the center face vent outlet, so that air discharge temperature at this location can be better controlled.


NOTE: The face vent mixing flaps always move to the "warmest air" position whenever the "up arrow" (defrost), "down arrow" (footwell), or maximum defrost mode buttons are pressed. They also move to the "warmest air" position when the system is turned "off."







- For the first time on any IHKA system, stratified air is available from the console rear outlet.
- The thumbwheel to the left of the outlet operates an on/off switch for airflow control.
- An additional thumbwheel to the right of the outlet allows rear seat passengers to vary air discharge temperature as well.







The console outlet is almost always open when the IHKA system is "on" and the rear seat passengers request air flow. An exception is during windshield defrosting (and maximum defrost mode) when the console outlet flap is fully closed.

The same flap and stepper motor, located on the IHKA E38 housing assembly, performs both the open/close and temperature control functions for the console outlet.







The stepper motor is operated by the control panel/module using information from the console rear outlet thumbwheels and the control panel/module buttons (left air distribution only).







- The housing assembly design allows a single stepper motor/flap assembly to provide both open/close operation and temperature mixing