Intelligent Eye Operation - Daikin FTXS20K2V1B Service Manual

Main Functions

1.10 INTELLIGENT EYE Operation

Outline This function detects the existence of humans in the room with a motion sensor (INTELLIGENT
EYE) and reduces the capacity when there is nobody in the room in order to save electricity.
Detail
1. Detection method by INTELLIGENT EYE
Sensor output
(Human motion)
Human detection
signal
2. The motions (for example: in cooling)
Human detection
signal
Target temperature
Remote controller
[INTELLIGENT
EYE] button
Operation
Fan speed ( )
Others
20
sampling (20 msec.)
High
Low
ON
OFF
The sensor detects human motion by receiving infrared rays and displays the pulse wave
output.
The microcomputer in the indoor unit carries out a sampling every 20 msec. and if it detects
10 cycles of the wave in 1 second in total (corresponding to 20 msec. × 10 = 200 msec.), it
judges humans are in the room as the motion signal is ON.
within 20 min.
ON
OFF
RESET.
ON
OFF
ON
OFF
OFF
When the microcomputer does not have a signal from the sensor in 20 minutes, it judges
that nobody is in the room and operates the unit at a temperature shifted from the target
temperature. (Cooling / Dry: 1 ~ 2°C higher, Heating: 2°C lower, Auto: according to the
operation mode at that time.)
In FAN operation, the fan speed is reduced by 60 rpm.
For dry operation, you cannot set the temperature with a remote controller, but the target
temperature is shifted internally.
20 min.
Set speed
If the sensor detects the outputs
10 times/sec. or more, it judges
humans exist.
1 sec.
20 min.
Set speed
Function and Control
SiBE041134
(R2821)
(R10723)