Function ControllerE- 10The function controller is an optional accessory and it is installed on the wall.The function controller is an additional controller which is used with the centralized controller.To use the function controller, refer to an appropriate manual.The button is for your installation specialist. You must NOT press it.After cleaning the air filter, press the button. Then the wired remote controller willdisplay the FILTER SIGN indicator when the time to clean the air filter.NNNN oooo tttt eeeeMode selection buttonRoom number displayTest indicatorIndoor unit selection buttonTest button Filter Reset buttonSwing buttonTemperature adjustmentbuttonsTemperature settingFan speedAir flow directionFilter Sign indicatorOn/Off & TimerSet/Cancel buttonFan speed adjustmentbuttonOn/Off indicatorCentralized controller indicatorCommunication error indicatorRemoving frost indicatorOperating mode