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Heater controls, function - GF83.20-P-2004GH

Model 163 up to 31.8.01 

The following components are integrated into the heater control unit (S98):

Blower switch (1):  with 0 setting and 4 levels.

IMPORTANT The blower switch (1) is not available as an individual part.

Temperature selector wheel (2):  with the "Blue", non-heating setting and the continuously variable heater setting.

Air distribution switch (3):  with the settings: Defroster vents, footwell, center plane and intermediate settings.

Recirculation switch  (RECIRCULATING AIR SWITCH ): Functions if diode is illuminated.

Fig 1: Identifying Blower Switch, Selector Wheel And Air Distribution Switch On Heater Control Unit
G04608903Courtesy of MERCEDES-BENZ USA
  Blower switch, location/task/design/function   GF83.25-P-2100GC 
  Air distribution switch, location/task/design/ function   GF83.25-P-2101GH 
  Temperature selector wheel, location/task/ design/function   GF83.25-P-2102GC 
  Air recirculation switch, location/task/design/ function   GF83.10-P-2117GH