ACC and HVAC

The Heating Ventilation and Air Conditioning (HVAC) in a W220 S-Class is achieved by means of an Automatic Climate Control (ACC) system.

Main In Cabin Components
 Pushbutton Control Module (N22)
 Centre Vent Control Module (N18/4)
 Overhead Control Panel (OCP) (N70)
 “B” Pillar Vents
 Right Side Outlet and Fixed Window and Door Vents
 Left and Right Defroster Vents
 Centre Vents with Optional A/C Control Module (N22/4) Rear Compartment
Description
Maintenance
 Automatic Climate Control (ACC) Service Menus
 Aktivkohle Filter (AKF) {Activated Charcoal Filter (ACF)} Replacing
 Blower Control Voltage
 Blower Motor Removing Repairing Replacing
 Cabin Ventilation Dust Filter Replacing
 Coolant Circulation Pump
 Duo Valve
 Four Quadrant Sun Sensor (B32/2)
 In Cabin Air Temperature Sensor (N22/b1) and Aspirator in Pushbutton Control Module (N22) Testing
 In Cabin Air Temperature Sensor (N22/b1) and Aspirator in Pushbutton Control Module (N22) Access and Cleaning
 In Cabin Air Temperature Sensor (N70/b1) and Aspirator in Overhead Control Panel (OCP) (N70) Testing
 In Cabin Air Temperature Sensor (N70/b1) and Aspirator in Overhead Control Panel (OCP) (N70) Access and Cleaning
 In Cabin Air Temperature Sensor (N70/b1) and Aspirator in Pushbutton Control Module (N22) and in Overhead Control Panel (OCP) (N70) Resistance Specification
 Multi-function Sensor (B31/1) Location and Access
 Multi-function Sensor (B31/1) CO Carbon Monoxide Access and Testing
 Multi-function Sensor (B31/1) NOx Nitrogen Oxide Access and Testing
 Multi-function Sensor (B31/1) Dew Point Temperature Access and Testing
 Outside Temperature Sensor (B14) Testing
 R134A Refrigerant Temperature Sensor (B12/1) Testing
 Replace W220 Evaporator Fantastic Video (Warning! Turn your sound down.)
  http://www.youtube.com/watch?v=AVNNFXPSafs&feature=youtube_gdata_player
 Repair Air Conditioning System
 Repair Blower Motor
 Under Hood ACC Drain Access and Cleaning