Cold Draft Prevention; Sleep Mode - Daikin FTXN25L Service Manual

2.5 Cold Draft Prevention

During each thermal cut in cycle, the indoor fan speed will modulate according to the indoor heat exchanger
temperature shown as below:

2.6 Sleep Mode

SLEEP Mode can be activated through the remote controller to keep the thermal comfort while sleeping.
SLEEP Mode continues operation at the target temperature for the first hour, then automatically raises the
target temperature slightly in case of cooling, or lowers it slightly in case of heating. This prevents excessive
cooling in summer and excessive heating in winter to ensure comfortable sleeping conditions, and also
saves electricity.
ON signal of sleep operation
ON signal of sleep operation+operation ON signal
target temperature
<COOL or DRY>
target temperature
<HEAT>
run
sleep operation
1hr 1hr
(no offset on target
temperature)
(shift 0.5°C)
(shift 1.0°C)
OFF signal of sleep operation
operation OFF signal
(shift 1.0°C)
(shift 2.0°C)
Algorithm & Control
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