10306075

Required discharge temperature

Required temperature determined by the set temperature and the inputted sensor value.

Auto control

Required discharge temperature is determined by the set temperature and the inputted sensor value. The feature will use the required discharge temperature to perform the auto control of temp. actuator, mode actuator, intake actuator, blower motor and compressor, and maintain the set temperature stably.

IN-CAR temperature correction

Upon detecting rapid changes of temperature from the INCAR sensor, it will gradually correct the incar temperature value.

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1°C UP/4sec delay

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1°C DOWN/4sec delay

AMB temperature correction

Upon detecting rapid changes of temperature from the AMB sensor, it will gradually correct the ambient temperature value.

Logic of the correction speed sensor

Photo correction

Upon detecting rapid changes of photo intensity from the PHOTO sensor, it will gradually correct the photo intensity value.

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350 → 1000(W/m²)/1min delay

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350 → 1000(W/m²)/5min delay

TEMP door control

It does the automatic control to maintain the optimum TEMP door opening (0%-100%). It will be computed by the temperature set and the input signal from each sensor.

The set temperature range 17°C→32°C, 0.5°C step (62°F→90°F, 1°F step)

Blower speed

Automatic control of the blower speed. The target value will be computed by the set temperature and the input signal from each sensor. (8 levels may be selected in case of manual selection.)

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Auto mode blower low voltage (Manual low voltage: 3.8)

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Auto mode heater blower HI speed: 10.6V

Electro-motive mode control

During auto control, it will raise the permitted voltage of blower motor gradually in order to improve comfortability.

12 seconds for shifting LO→MAX HI

Photo compensation

During auto control, it will compensate the blower level and the discharge temperature according to the photo intensity detected from the PHOTO sensor. PHOTO compensation will begin after 5 seconds when ignition on.

Mode door control

Automatic control of air discharge based on the required discharge 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)

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At OFF, MODE door will fix the current condition.

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At OFF in manual mode, MODE door will maintain the manual control condition.

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.

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Shift to REC when selecting REC button at FRE condition (LED on).

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Shift to FRE when selecting FRE button at REC condition (LED off).

INTAKE control at OFF

The intake door will fix to the FRE. position when switching the system off.

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FRE./REC. manual selection will be enabled at OFF

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REC indicator will come out at OFF.

Compressor auto control

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

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

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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 HI at AUTO mode, MAX HOT will be performed. It will prevail over MIX mode control.

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TEMP door: MAX HOT

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MODE door: FLOOR mode

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INTAKE door: FRE mode

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Compressor: OFF

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Blower speed: AUTO HI(10.6V)

MAX COOL

When selecting the set temperature LO at AUTO mode, MAX COOL will be performed.

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TEMP door: MAX COOL

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MODE door: FLOOR mode

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INTAKE door: REC mode

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Compressor: ON

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Blower speed: MAX HI

Electromotive heating control

If the ambient temperature is 5°C or more and the in-car temperature is 10°C or less than the ambient temperature at B/L or FLOOR in AUTO mode, it will effect the electromotive heating control to prevent outside cold air from flowing toward the feet of passengers.

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Blower speed: Controlled at AUTO LOW (4.5V)

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

Operation release

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In-car temp. ＞ ambient +10°C

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Max cool

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In pressing MODE switch.

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In pressing DEF switch.

MODE: Manual selection is enabled.

INTAKE door: At AUTO control or at manual selection mode.

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 blower auto ), the blower speed will be operated at LOW for approx. 9 seconds before entering the 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 will output a LOW signal (1.0V or less) to the FATC.

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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 (4V) the FATC.

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When IGN 2 ON, the AQS assembly will be preheated for 34.5±5seconds.

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

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IGN2 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

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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. (Store the 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.

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When the initial ignition ON after battery connection, the system will operate at the set temperature 25°C and at AUTO mode.

Memory

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

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When IGN ON after IGN OFF during FATC operation, the system will operate at the previous before the ignition off.

Switch	Feature	Switch selection	Function
Temp switch		Push DOWN button at set temperature of 25°C while operating	Select at intervals of 0.5°C from 17°C to 25°C
		Indication screen
		Push DOWN button at set temperature of 25°C while operating	Selecte at intervals 0.5°C from 17°C to 25°C
		Indication screen
AUTO switch		Push AUTO switch under system OFF or manual opeation	Control automatically all outlet by input value of each sensor
		Indication screen
		Push AUTO switch under automatic operation	Unchanged
		Indication screen
MODE switch		Push MODE switch while operating	Indicate the followings repeatedly wheneverpushing the switch under set condition. Vent → By level → Floor → Mix
		Indication screen
		Push MODE switch under system OFF	Release AUTO mode and keep system OFF
OFF switch		Push OFF switch while operating	System OFF (keep TEMP and MODE intake in original condition and turn OFF blower and compressor
OFF switch		Indication screen
A/C switch		When air conditioner is OFF, push A/C switch under system OFF or operating	Turn ON air conditioner outlet

		Push A/C switch under air conditioner ON	Turn OFF air conditioner outlet

Air intake switch		When system is OFF, push intake switch under air outlet condition	Keep system OFF na intake door turn to air intake mode
		When system OFF, push intake switch under air intake condition	Keep ststem OFF and intake door turn to air outlet mode
		Push intake switch under air outlet when operating	Air intake mode
		When operating, push intake switch under air intake condition	Air outlet mode
		Air outlet mode indicator condition
		Air intake mode indicator condition
DEF switch		Push DEF switch when operating DEF mode or system OFF	Mode door : to DEF mode A/C : ON Intake : Outlet mode Others : Condition before OFF
	Indicator and indication screen
		Push DEF switch when operating DEF mode	Return to the condition before DEF mode

AQS switch		Push AQS switch under AQS stopped	Control intake door by AQS signal while turning on AQS indicator
		Push AQS switch when operating AQS	Return to the state before selecting AQS while turning off AQS indicator
		Push OFF switch when operating	Turn off indication screen and AQS indicator, and intake door fixes to air intake mode
		Push OFF switch when operating	Able to select AQS, air intake, and air outlet when system OFF
		Indicator condition while operating AQS
		Indicator condition under AQS stopped
Blower switch		Push blower switch ▼ while operating	Voltage between both edges of blower motor goes down to 3.8V
		Indication screen
		Push blower switch ▲ while operating	Votage between both edges of blower motor goes up to Max high
		Indication screen
		Push blower switch under system OFF	Operate with 3.8V between both edges of blower motor
		Indication screen

Control item	Control features		Remarks
Required discharge temperature	Required temperature determined by the set temperature and the inputted sensor value.
Auto control	Required discharge temperature is determined by the set temperature and the inputted sensor value. The feature will use the required discharge temperature to perform the auto control of temp. actuator, mode actuator, intake actuator, blower motor and compressor, and maintain the set temperature stably.
IN-CAR temperature correction	Upon detecting rapid changes of temperature from the INCAR sensor, it will gradually correct the incar temperature value.		- 1°C UP/4sec delay - 1°C DOWN/4sec delay
AMB temperature correction	Upon detecting rapid changes of temperature from the AMB sensor, it will gradually correct the ambient temperature value.		Logic of the correction speed sensor
Photo correction	Upon detecting rapid changes of photo intensity from the PHOTO sensor, it will gradually correct the photo intensity value.		- 350 → 1000(W/m²)/1min delay - 350 → 1000(W/m²)/5min delay
TEMP door control	It does the automatic control to maintain the optimum TEMP door opening (0%-100%). It will be computed by the temperature set and the input signal from each sensor.		The set temperature range 17°C→32°C, 0.5°C step (62°F→90°F, 1°F step)
Blower speed	Automatic control of the blower speed. The target value will be computed by the set temperature and the input signal from each sensor. (8 levels may be selected in case of manual selection.)		- Auto mode blower low voltage (Manual low voltage: 3.8) - Auto mode heater blower HI speed: 10.6V
Electro-motive mode control	During auto control, it will raise the permitted voltage of blower motor gradually in order to improve comfortability.		12 seconds for shifting LO→MAX HI
Photo compensation	During auto control, it will compensate the blower level and the discharge temperature according to the photo intensity detected from the PHOTO sensor. PHOTO compensation will begin after 5 seconds when ignition on.
Mode door control	Automatic control of air discharge based on the required discharge 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)		- At OFF, MODE door will fix the current condition. - At OFF in manual mode, MODE door will maintain the manual control condition.
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 fix to the FRE. position when switching the system off.		- FRE./REC. manual selection will be enabled at OFF - REC indicator will come out at OFF.
Compressor auto control	Control automatically the compressor on/off state corresponding to the set temperature and 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 HI at AUTO mode, 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 LO 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 ambient temperature is 5°C or more and the in-car temperature is 10°C or less than the ambient temperature at B/L or FLOOR in AUTO mode, it will effect the electromotive heating control to prevent outside cold air from flowing toward the feet of passengers.		- Blower speed: Controlled at AUTO LOW (4.5V)
	As the coolant temperature rises, the MODE door will shift to DEF → AUTO.		Operation release ● In-car temp. ＞ ambient +10°C ● Max cool ● In pressing MODE switch. ● In pressing DEF switch.
	MODE: Manual selection is enabled. INTAKE door: At AUTO control or at manual selection mode.
	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 blower auto ), the blower speed will be operated at LOW for approx. 9 seconds before entering the 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 will output a LOW signal (1.0V or less) 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 (4V) the FATC.		- When IGN 2 ON, the AQS assembly will be preheated for 34.5±5seconds.
	Corresponding to the signal from the AQS, it will control the INTAKE door as follows to prevent the inflow of harmful gas in FATC:		- IGN2 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. (Store the 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 system will operate at the set temperature 25°C and at AUTO mode.
Memory	When removing ignition key, it will store FATC'S operating condition.		- When IGN ON after IGN OFF during FATC operation, the system will operate at the previous before the ignition off.