4 OperationOperation manual10(C)(F)TXA15~50A2V1B(W)(S)(T)Daikin room air conditioner3P485919-7C – 2017.12INFORMATIONProgram the timer again in case of:▪ A breaker has turned the unit off.▪ A power failure.▪ After replacing batteries in the user interface.INFORMATIONThe clock MUST be set correctly before using any timerfunctions. Refer to "3.3.1 To set the clock" on page 5.4.5.1 To start/stop OFF timer operation1 Press to start.Result: is displayed on the LCD, the timer lamp lightsup, and blinks. and the day of the week disappear fromthe LCD.2 Press or to change the time setting.3 Press again.Result: and the set time are displayed on the LCD.Result: The timer lamp lights up.INFORMATIONEach time or is pressed, the time settingadvances by 10 minutes. Holding the button down willchange the setting rapidly.4 To stop operation, press .Result: and disappear from the LCD and the timerlamp goes off. and the day of the week are displayed on the LCD.INFORMATIONWhen you set the ON/OFF timer, the time setting is storedin the memory. The memory will be reset when the userinterface batteries are replaced.Use of night set mode in combination with OFF timerThe air conditioner automatically adjusts the temperaturesetting (0.5°C up in cooling, 2.0°C down in heating) toprevent excessive cooling/heating and ensure acomfortable sleeping temperature.4.5.2 To start/stop ON timer operation1 Press to start.Result: is displayed on the LCD, the timer lamp lightsup, and blinks. and the day of the week disappear fromthe LCD.2 Press or to change the time setting.3 Press again.Result: and the set time are displayed on the LCD. The timerlamp lights up.INFORMATIONEach time or is pressed, the time settingadvances by 10 minutes. Holding the button down willchange the setting rapidly.4 To stop operation, press .Result: and disappear from the LCD and the timerlamp goes off. and the day of the week are displayed on theLCD.4.5.3 To combine OFF timer and ON timer1 To set the timers, refer to "4.5.1 To start/stop OFF timeroperation" on page 10 and "4.5.2 To start/stop ON timeroperation" on page 10.Result: and are displayed on the LCD.Example:Display Current time Set while… Operation6:00 the unit isoperating.Stops at 7:00and starts at14:00.the unit is NOToperating.Starts at 14:00.Note: If the timer setting is active, the current time is NOT displayedon the LCD.4.6 Weekly timer operationWith this operation, you can save up to 4 timer settings for each dayof the week.Example: Create a different setting from Monday to Friday and adifferent setting for weekends.Day of the week Setting exampleMonday▪ Make up to 4 settings.6:00 8:30 17:3025°C 27°C22:001 2 3 4ON OFF ON OFFTuesday~Friday▪ Use the copy mode if thesettings are the same asfor Monday.6:00 8:30 17:3025°C 27°C22:001 2 3 4ON OFF ON OFFSaturday▪ No timer setting—Sunday▪ Make up to 4 settings.8:00 10:00 19:00 21:0027°C 27°C25°CON OFF OFF ON1 2 3 4▪ ON-ON-ON-ON setting. Enables scheduling the operation modeand set temperature.▪ OFF-OFF-OFF-OFF setting. Only the turn off time can be set foreach day.Note: Be sure to aim the user interface at the indoor unit and checkfor a receiving tone when setting the Weekly timer operation. See"2.2.3 To operate the user interface" on page 4.INFORMATIONThe clock MUST be set correctly before using any timerfunctions. Refer to "3.3.1 To set the clock" on page 5.