Auxiliary Fan Control Module

The auxiliary fan control module switches on the auxiliary fan.

The pushbutton 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