Hyundai Tiburon (2003 year). Manual — part 154

control

temperature. It will be computed by the temperature setting and the
input signal from each sensor.
VENT

→

B/L

→

FLOOR

→

VENT)

In case of manual selection (VENT

→

B/L

→

FLOOR

→

MIX

→

VENT)

MODE door will maintain
the AUTO
controlcondition.

- At OFF in manual mode,

MODE door will maintain
the manual
controlcondition.

MIX mode
control (in auto
control)

If the ambient temperature is -13°C or less in AUTO mode, discharge
mode will be controlled at MIX. (When front window glass is defogged.)

Entering MIX mode, A/C will
operate.

INTAKE door
control

Auto control of intake mode based on the required discharge
temperature that will be computed by the temperature setting and the
input signal from each sensor.

- Shift to REC when

selecting REC button at
FRE condition (LED on).

- Shift to FRE when

selecting FRE button at
REC condition (LED off).

INTAKE control
at OFF

The intake door will shift to the REC position when switching the system
off in auto-condition, and maintain the previous condition at OFF at
manual condition.

- FRE./REC. manual

selection will be enabled
at OFF.

- REC indicator will come

on at OFF at AUTO
mode.

Compressor
auto control

Control automatically the compressor on/off state corresponding to the
set temperatureand the input signal from each sensor.

- When selection the

AUTO SW, the
compressor is controlled
to ON/OFF.

- When selection the DEF

SW, the compressor is
controlled to "ON".

Compressor
clutch on/off
control based on
refrigerant
temperature

If EVAP sensor temperature is below than 0.5°C, the compressor will be
ON and the temperature is 3°C, or higher, with the compressor OFF.

MAX HOT

When selecting the set temperature 32°C at AUTO mod e, MAX HOT will
be performed. It will prevail over MIX mode control.

- TEMP door: MAX HOT

- MODE door: FLOOR

mode

- INTAKE door: FRE mode

- Compressor: OFF

- Blower speed: AUTO HI

(10.6V)

MAX COOL

When selecting the set temperature 17°C at AUTO mode, MAX COOL
will be performed.

- TEMP door: MAX COOL

- MODE door: FLOOR

mode

- INTAKE door: REC mode

- Compressor: ON

- Blower speed: MAX HI

Electromotive
heating control

If the set temperature >the in-car temperature by 3°C at B/L or FLOOR
in AUTO mode, and the water temperature sensor input is 58°C or less,
it willeffect the electromotive heating control to prevent outside cold air
from flowing toward the feet of passengers.

- Blower speed: Controlled

at AUTO LOW (0.5V)

As the coolant temperature rises, the MODE door will shift to DEF

→

MIX

→

AUTO.

Operation release

• 10 minutes after ignition

on(In case of
temperature sensor fail,it

MODE: Manual selection is enabled.
INTAKE door: At AUTO control or at manual selection mode.

will apply the substitute
value, 20°C).

• After pressing blower

switch when water
temperature sensor
detectionis 58°C or
higher

• In pressing MODE

switch.

• In Upon pressing DEF

switch.

Blower speed: Manual selection is enabled (No re-entry).

Electromotive
cooling control

In order to prevent hot air from the VENT or B/L in AUTO mode (A/C on
mode), the blower speed will be operated at LOW for approx. 9 seconds
before enteringthe AUTO control if the EVAP sensor detection is
temperature 30°C or higher.

MAX HOT

If the above condition is satisfied, electromotive cooling control will
operate at any time.

Air Quality
System (AQS)

The AQS system will detect the hazardous elements and odors
contained in the air.If the harmful element concentration is higher than
standard, the system willoutput a LOW signal (0V) to the FATC.

- When the initial battery

connection and ignition is
ON, it will operate at
AUTO mode. (AQS will
not operate).

If the concentration is within the standard value, the system will output a
HI signal(3V) the FATC.

- When IGN 2 ON, the

AQS assembly will be
preheated for 34.5 ±
5seconds.During the
preheating, AQS will
output 0V (ground). (REC
mode)

Corresponding to the signal from the AQS, it will control the INTAKE
door as follows toprevent the inflow of harmful gas in FATC :

- IGN 2 ON: It will check

circuit break on the AQS
assembly's signal line for
approx. 7 seconds during
the preheating,
irrespective to the AQS
switch condition.

Condition : INTAKE door position

- When AQS is selected

prior to IGN2 OFF and
IGN2 is turned OFF

→

ON: AQS indicator will
come on, and the system
will operate at AQS
mode. (Storethe previous
condition before IGN 2
OFF)

LOW : REC

HI : FRE

Initialization
Upon battery-on

When supplying the initial power, it will operate in the initial condition.

- When the initial ignition

ON after battery
connection, the
systemwill operate at the
set temperature 25°C
and at AUTO mode.

Memory

When removing the ignition key, it will store FATC's operating condition.

- When IGN ON after IGN

OFF during FATC
operation, the system
willoperate at the
previous before the
ignition off.

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