Komatsu ecot3 Operation And Maintenance Manual page 150

OPERATION
Air Conditioner Switch
Switch (8) is used to turn the air conditioner (cooling,
dehumidifying, heating) ON or OFF.
Press air conditioner switch (8) when the fan is operating (when
display (b) is shown on the display monitor). The air conditioner
is switched ON and starts to work. Press the switch again to
stop the air conditioner.
Air conditioner cannot be operated while the fan is off.
Sunlight Sensor
This sensor (9) automatically adjusts the flow of air from the vents
to match the strength of the sun's rays. In addition, it automatically
detects changes in the temperature inside the cab caused by
changes in the strength of the sun's rays beforehand and
automatically adjusts the temperature.
DETAILED CONTROLS AND GAUGES
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