IHKA E36 HOUSING ASSEMBLY
The IHKA housing assembly, shown below, is very similar in construction and layout to the IHKR (earlier system) E36 housing assembly.
Identifying IHKA E36 Housing Assembly. Scheme 28
Note. The E36 final stage unit fits into the lower left side of the housing.
And, the temperature mixing flap is manually operated using a thumbwheel and cable arrangement - there is no stepper motor on the housing assembly.
Identifying M-BUS Stepper Motor Flaps. Scheme 29
Like IHKA E38, IHKA E36 uses an M-Bus to control all stepper motors except the fresh air flaps stepper motor. IHKA E36, however, uses only five stepper motors
- Fresh air flaps (conventional)
- Recirculating air flaps (smart)
- Defroster flaps (smart)
- Face vent flaps (smart)
- Footwell flaps (smart)
The fresh air flaps stepper motor is connected to the control panel/module by four circuits. The "smart" stepper motors are all linked together and receive their positioning commands over the M-bus.