Delta 21CK018C24 Instruction Manual page 15

3.4.8 Sleep Setting
Sleep on: Press Function button under on-state of the unit into sleep function and then press Enter/cancel button to
turn on sleeping function.
Sleep off: During sleep on-state, press Function button to go to the sleep function and then press Enter/cancel
button to turn off this function.
Sleep setting is shown as Fig.3.4.8:
Sleep setting is clear after power failure and then power recovery. There is not sleep function in fan and auto mode.
Note: In cooling and dry mode, if the unit with sleep function has run for 1 hour, the preset temperature will be
increased by 1°C and 1°C in another 1 hour. After that, the unit will run at this temperature. In heating mode,
if the unit with sleep function has run for 1 hour, the preset temperature will be decreased by 1°C and 1°C in
another 1 hour. After that, the unit will run at this temperature.
Fig.3.4.8 Sleep setting
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