IHKA E36 Blower Control
IHKA E36 blower control is most similar to that of IHKA E31 since a separate final stage unit is mounted on the housing assembly. E36, however, offers eight discrete speeds.
The control panel/module processes the blower speed rocker switch input and sends a signal to the final stage unit. The final stage unit then regulates blower motor voltage to control blower speed.
The blower rocker switch is the master controller for the IHKA system as it can be used to switch the system "Off." This is done by lowering blower speed to the lowest speed and then pressing the "-" button one more time:
- The blower motor turns off and
- All flaps are closed and
- All function LEDs and the LCD display are switched off and
- The rear window defroster is switched off and
- The A/C compressor is switched off.
The interior temperature sensor blower continues to operate, though, and the control panel/module pulses the appropriate water valve if either left or right desired temperature is above the sensed interior temperature.
The IHKA E36 system can be turned "on" again by pressing any button on the control panel/module face .