Auxiliary Fan Control Module

Model 210
with ENGINE 104 as of September 9, 1996 up to Febuary 28, 1997
602, 604, 605, 606 up to September 1, 1996
112 up to May 31, 1998
113 as of March 1, 1997
with CODE (580) Air Conditioning or Tempmatic A/C for USA
with CODE (581a) Air Conditioning (automatic)

The auxiliary fan control module switches on the auxiliary fan.

The push-button control module controls the AIR control module (N65/1) with a minimum of 3 mA and max. 10 mA.
The AIR control module (N65/1) compares these values with stored values and switches on the auxiliary fan (M4) under the following conditions:
- Outdoor temperature = >5 °C
- Refrigerant pressure = 13 bar
- Coolant temperature = 103 °C
- Limp-home mode (e.g. refrigerant pressure 20 bar)

The auxiliary fan (M4) is switched off under the following conditions:
- Refrigerant pressure = 12 bar
- Coolant temperature = 100 °C