Defroster button, function

Type gf · topic 83.40 · version 0101 · 1998-10-09

Applies to: MODEL 202 with CODE (581a) Air conditioning (automatic) MODEL 208 with CODE (581a) Air conditioning (automatic) MODEL 210 with CODE (581a) Air conditioning (automatic) with CODE (498) Japanese version MODEL 140 as of 1.9.95 MODEL 129 as of 1.6.96

Where it sits

Function group 3 Body › 83 Climate control › 83.40 Air conditioning (automatic) — Series 129 · Series 140 · Series 202 · Series 208 · Series 210

EinPAS 39 Heating/ventilation/cooling › 39.15 Climate control › 39.15.33 Operating unit/cable — Series 129 · Series 140 · Series 202 · Series 208 · Series 210

GF83.40-P-2139-02E

Defroster button, function



Function

The following components are actuated by pressing the defroster button (  ):

 Blower starts running immediately depending on coolant temperature

 Dual valves (bei Typ 129 Monoventil) open

 Coolant circulation pump runs

 Defroster nozzles open (100%)

 System operates with fresh air

 A/C compressor switches on at evaporator temperature of
> 3 °C

For defrosting the air outlet temperature corresponds to the temperature actually measured at the heater core.

The temperature is not controlled by comparison with the passenger compartment temperature measured by the in-car temperature sensor.