300SEL (126.025) L6-3.0L (103.981) (1988)
Control Assembly: Description and Operation
The control unit is located in center console and comprises a temperature dial (3), a push-button switch unit (4) and blower switch (5).
The temperature dial serves for stepless adjustment of in-car temperature between the two end detent positions "MIN" = not heating and "MAX" = fully
heating.
Set to "MAX" means full, uncontrolled heating capacity; set to "MIN" means full, uncontrolled cooling capacity, each time in 5th blower stage. These
functions apply only for push-button "b", "c" and "d", as well as for blower switch in position "AUTOM". The temperature set with temperature dial is
attained as quickly as possible and will then remain constant.
6
Temperature sensor for heat exchanger (up to 12/80)
To prevent undesired temperature fluctuations the temperature, once set, should be corrected in small steps only. Rotation of temperature dial will adjust
a potentiometer. Together with in-car temperature sensor (7),