Intelligent Eye - Daikin CTXS09GVJU Service Manual

Main Functions
1.8

INTELLIGENT EYE

This is the function that detects existence of humans in the room by a human motion sensor
(INTELLIGENT EYE) which serves to reduce capacity and save electricty when no people are
present in the room.
Processing
1. Detection method by INTELLIGENT EYE
Sensor output
(Human motion)
Human detection
signal
Human detection
signal
Remote controller
INTELLIGENT
EYE button
1 In case of Fan mode, the fan speed reduces by 50 rpm.
32
sampling (20msec)
High
Low
ON
OFF
This sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
A microcomputer in an indoor unit carries out a sampling every 20 msec. and if it detects 10
cycles of the wave in one second total (corresponding to 20 msec.× 10 = 200 msec.), it
determines that a human is in the room as the motion signal is ON.
2. The motions (for example: in cooling)
within 20
minutes.
ON
OFF
RESET.
C/O Set temp. + Δ3.6˚F
H/P Set temp. - Δ3.6˚F
Set temp.
MaxHz
Mi nHz
Compressor
speed
0Hz
ON
OFF
ON
Operation
OFF
Set speed
Fan speed ( 1)
OFF
When a microcomputer has no signal from the sensor in 20 minutes, it judges that nobody is in
the room and operates the unit in temperature shifted Δ3.6°F from the set temperature.
(Cooling/Dry : Δ3.6°F higher, Heating : Δ3.6°F lower and Auto : according to the operation mode
at that time.)
If the sensor detects the outputs 10 times/sec.
or more, it detects that humans are present in the room.
20 min.
40 min.
Frequency at set temp. + Δ3.6˚F
The lower limit by detecting
human.
(Prohibition of thermostat-off)
Set speed - 50 rpm
1sec
20 min.
in case of
thermostat-off
Set speed
Function and Control
SiUS12-814
(R282
(R4151)