Daikin FTKM18PVMK, Service Manual

Page: 36 / 119

Main Functions SiMT041509E
21 Function and Control
1.10 INTELLIGENT EYE Operation
Outline This function detects the presence 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
„
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, it judges humans are in the room as the motion
signal is ON.
„
The sensor may detect human motion with up to 20 msec. latency.
2. The motions (in cooling)
In FAN operation, the fan speed is reduced by 60 rpm.
„
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.)
Note: For dry operation, the temperature cannot be set with a remote controller, but the target
temperature is shifted internally.
1 sec.
sampling (20 msec.)
High
Low
ON
OFF
Sensor output
(R19471)
Human detection
signal
If the sensor detects the outputs
10 times/sec. or more, it judges
humans are in the room.
Human motion
ON
OFF
Reset Reset Reset
20 min.
ON
OFF
ON
OFF
Operation
OFF
Fan speed (
+
)
Set speed Set speed
Target temperature
(R19414)
Remote controller
INTELLIGENT
EYE
button
Human detection
signal
↑ ↑ ↑
within
20 min.
within
20 min. within
20 min.