Explanation Of The Sleep Timer - Hitachi RAK-18NH6 Service Manual

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.
NOTE
G If date or current time is not set, sleep timer can not be set.
G 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.
G You can not set other timer during sleep timer operation.
G After sleep timer time is up and when press sleep button
again, the sleep timer will be set as last setting.
G Sleep timer effective only once.
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