2892640 - E6020 AIR CONDITIONING - Functional description

Functional description

The relay J35 controls the passenger compartment air fan circuit. The supply at the relay contact arrives from the battery from the line for the maxifuse J/B1 of B5 protected by fuse F12 of the junction unit B1, whilst the energizing of the coil is controlled by the ignition (INT/A) from the line protected by fuse B27. The relay J35 supplies the control knob H81 : this controls the fan at the different speeds through the regulator O30 . The voltage control signal varies according to the position of the knob and either passes or does not pass through the resistors of the regulator O30 determining the four different voltage signals for the fan N85 which sends external or recirculation air to the duct/distributor unit at 4 different speeds. The fan N85 operates at the first speed if the button for engaging the compressor is pressed See E6021 COMPRESSOR ENGAGEMENT , even if the control knob H81 is in position '0'. The control panel has ideograms lit up when the side lights are switched on by lights G45, supplied through the line protected by fuse F3 of junction unit B1 (see See E2010 SIDE LIGHTS / NO. PLATE LIGHTS ).