Lotus Elise S1 Service Notes page 451

Lotus Service Notes Section PH
PH.2 - CONTROLS OPERATION & AIRFLOW DISTRIBUTION
The interior climate controls consist of
three rotary controls for fan speed, tempera-
ture and air distribution, and two push switches
for air conditioning and air re-circulation.
a.c. switch Temperature
Recirculation
switch
Fan speed switch
Distribution control
Air Conditioning
The left hand push button switches on the air conditioning, but the engine must be running and a fan
speed selected before the system will operate. With a fully cold temperature setting, refrigerated air will be
supplied. For dehumidified air, select air conditioning in conjunction with a warm temperature setting.
The amber tell tale in the switch button is backlit when the sidelamps are switched on to help locate the
switch, and brightens when the circuit is active.
Air Re-circulation
When the re-circulation button is pressed, a vacuum operated flap (via a solenoid valve) closes off the
fresh air intake, and opens the recirculation port to draw air from the interior of the car via the four groups of
holes in the chassis footwell front wall. This facility should be used when maximum refrigeration is desired, or
in heavy traffic to minimise the induction of exhaust fumes.
The amber tell tale in the switch button is backlit when the sidelamps are switched on to help locate the
switch, and brightens when the button is pressed.
Fan Speed
The left hand rotary switch provides three fan speeds to boost air circulation. Turned fully counterclockwise,
the fan is off; some airflow will be generated by 'ram' effect which is dependent on vehicle speed, but for
controlled output, a fan speed should be selected. Turning the switch progressively clockwise operates the
blower fan at increasing speed in three steps.
Note that the fan operates only with the ignition switched on.
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