Hitachi RAS18CH1 Instruction Manual page 15

Explanation of the sleep timer
The device will control the FAN SPEED and room temperature automatically
so as to be quiet and good for people's health.
You can set the sleep timer to turn off after 1, 2, 3 or 7 hours. The FAN
SPEED and room temperature will be controlled as shown below.
Operation with the sleep timer
Function
The room temperature will be
controlled 5°C below the
temperature and the FAN
Heating
SPEED will be set to LOW
setting 30 minutes after the
" "
setting of the sleep timer.
The room temperature will be
Cooling
controlled 2°C above the
temperature and the FAN
" "
SPEED will be set to LOW
setting 30 minutes after the
and
setting of the sleep timer.
dehumidifying
" "
Fan
The settings of room temperature and circulation are varied.
" "
NOTE
If date or current time is not set, sleep timer can not be set.
If you set the sleep timer after the off-, on/off- or off/on-timer has been set, the sleep timer
becomes effective instead of the off-, on/off- or off/on-timer set earlier.
You can not set other timer during sleep timer operation.
After sleep timer time is up and when press sleep button again, the sleep timer will be set as
last setting.
Sleep timer effective only once.
Operation
Sleep timer set
30 minutes later
2 C
Sleep
timer set
30 minutes later
– 15 –
5 C
7 hours
2 hours
later
later
1 hour later 3 hours later
6 hours
later
7 hours later
2 hours
later
3 hours later