Brief component description

The following components are described for the heating and air conditioning system:

• IHKA control unit with integrated control panel
• FKA control unit with integrated control panel
• HKA control unit and control panel
• Blower with blower output stage
• Ioniser
• Electric auxiliary heater
  • Electric auxiliary heater in the heating and air-conditioning unit (only vehicles with diesel engines)
  • Electric auxiliary heater rear left and electric auxiliary heater rear right (only IHKA High with FKA)
• Flap motors
• Stratification control wheel
• Limit-position switch
• Sensors
  • Interior temperature sensor (IHKA and FKA)
  • Refrigerant pressure sensor
  • Evaporator temperature sensor (IHKA and HKA)
  • Rain-light-solar-condensation sensor
  • Automatic air recirculation control sensor (AUC sensor)
  • Heat exchanger sensor
  • Ventilation temperature sensor
  • Rear-cabin footwell-temperature sensor
  • Roof air vent temperature sensor
• Dual water valve
• Refrigerant shutoff valve at front and rear
• Air conditioning compressor
• Capacitor with integrated dryer flask
• Expansion valve