Denso RT1 Owner's Manual page 8

4.2 UNIT
H I J K H
H/ Directional Airflow Controls
Vertical airflow directional control.
I/ Power Indicator (Blue)
Illuminates when the air-conditioner is switched on.
J/ Infrared Remote Control Receiver
Electronic receiver for remote control signal.
K/ Quick Cool Mode Indicator (White)
Illuminates while the air-conditioner is operating in quick cool mode.
7
Operation