Air conditioning (Control panel): Description and operation

Control panel

1 LH temperature switch 2 Economy mode (ECON) switch 3 Blower switch 4 Display 5 Distribution switch 6 External air temperature (EXT) switch

7 RH temperature switch 8 Fresh/Recirculated air switch 9 Defrost mode switch 10 Automatic mode (AUTO) switch 11 A/C on/off switch

The control panel switches are all non-latching pushswitches except for the LH and RH temperature switches, which are centre-off rocker switches. The switches have the following functions:

LH and RH temperature switches. Enabled only while the system is on: l Each press increases or decreases the related temperature setting, in steps of 1 °C (2 °F), between 16 and 28 °C (60 and 84 °F). l If the decrease side of the switch is pressed when a temperature of 16 °C (60 °F) is set, the display changes to LO (maximum cold). l If the increase side of the switch is pressed when a temperature of 28 °C (84 °F) is set, the display changes to HI (maximum hot). l If a switch is kept depressed, step changes occur every 0.4 seconds.

A/C on/off switch. Switches the system on and off. When used to switch the system on, the system resumes the configuration in use prior to the previous off selection.

Blower switch. Enabled only while the system is on. Provides manual control of blower speed: l Each press changes the blower speed, in sequence, through off (only available if economy mode is selected on) and five incremental speeds. l If the switch is kept depressed, after 1 second subsequent speed increments occur every 0.4 second until blower reaches high speed. Releasing and then pressing the switch again changes blower back to off or low speed.