Without 7 Inch Display

UPPER VENTILATOR DOOR CONTROL SYSTEM


System Description

The upper ventilator door motor is attached to the heater & cooling unit assembly. The upper ventilator door motor operates by the UPPER VENT switch ON/OFF. Motor rotation is conveyed to a rod which activates the upper ventilator door.

SYSTEM OPERATION
- The A/C auto amp. receives data from each of the sensors.
- The A/C auto amp. sends air mix door, the mode door, the upper ventilator door and the intake door opening angle data to the air mix door motor LCU(s), the mode door motor LCU, the upper ventilator door motor LCU and the intake door motor LCU.
- The air mix door motor(s), the mode door motor, the upper ventilator door motor and the intake door motor read their respective signals according to the address signal. Opening angle indication signals received from the A/C auto amp. and each of the motor position sensors are compared by the LCUs in each door motor with the existing decision and opening angles.
- Next, HOT/COLD, DEF/VENT, OPEN/SHUT or FRE/REC operations is selected. The newly selected data is returned to the A/C auto amp.

Door Motor Circuit






Upper Ventilator Specification