Control Assembly: Description and Operation
Control AssemblyA. General
The models 124 are provided with an automatic climate control as special equipment.
Control Unit Comprising:
a. Temperature selector wheel
b. Pushbutton switch with 5 functions
c. Blower switch
S24. Fresh/recirculated air switch
B. Automatic climate control unit (N22)
This consists of a temperature selector wheel (a). pushbutton switch (b) with five pushbuttons and the blower switch (c).
The control unit houses electronics with the following functions:
1. Control of the interior temperature and activation of the refrigerant compressor with ground via the control unit compressor shut-off.
2 Control of the blower control unit.
3. Control of the circulated air operation.
4. Control of the air flaps.
The respective outputs of the control unit are designed short-circuit proof. This feature protects the conductor boards in the control unit during a short-circuit.
The function of the short-circuit safety feature is designed differently by the respective manufacturers of the control unit.