AIR INTAKE CONTROL OPERATION


BHE074061190T15

Order of Priority for Controls

• The air intake control operates according to the following order of priority.

1. Air intake manual control
2. Defroster correction
3. MAX HOT and MAX COLD correction
4. Air intake automatic control

Air Intake Automatic Control

• The A/C amplifier calculates the air intake actuator opening angle (air intake mode) based on the target temperature operating the actuator.

• If the target temperature is high, the actuator opening angle is set to FRESH, if the temperature is low, it is set to REC.

1
A/C amplifier
2
Target temperature
3
Intake mode determination
4
Air intake actuator

Correction

Defroster correction

• Sets the air intake at FRESH when the airflow mode is set to DEFROSTER, HEAT/DEF for improved defrosting.

MAX HOT, MAX COLD correction

• When the set temperature is at 32.0, the air intake actuator is at FRESH, when it is at 18.0, it is set to REC.

Air Intake Manual Control

• The air intake mode can be switched by operation of the REC/FRESH switch.

Air intake mode

REC/FRESH switch operation

FRESH
Sets to FRESH when REC/FRESH switch is turned on during REC mode.
REC
Sets to REC when REC/FRESH switch is turned on during FRESH mode.