Control SystemsV-6622 Centralized control system2-3. Function controller (MCM-A100)3) Explanation of part namesNo. Name DescriptionError indicator It is displayed when errors occurred in indoor/outdoor units.Defrost indicator Certain indoor unit enters Defrosting operation mode.Operation mode indicator Indoor unit operation mode. Auto, Cooling, Dehumidify, Fan, Heating.Centralized control It indicates that certain indoor unit is not controlled by wired/wireless controllers.Fan speed indicator It indicates indoor unit fan speed.Air flow direction indicator It indicates indoor unit airflow direction.Operation LED It indicates indoor unit operation. It also flickers during initial tracking process.On/Off button Indoor unit can be turned On/Off.Fan speed button Indoor unit fan speed can be selected.Air flow direction button Indoor unit airflow direction can be selected.Filter reset button When filter replacement indicator is ON, press the filter reset button to clearfilter indication.Operation mode button Indoor unit operation mode can be selected.Error check button When error indicator is displayed, press this button to check the error code.Indoor unit selection button Press Up/Down button to select the indoor unit.Temperature set button Press this button to set temperature.Filter replacement indicator This warning is displayed when filter replacement is required.Test run indicator No functionSet temperature display It displays the current set temperature. When errors occur, equivalent error codeis also displayed.Indoor unit RMC address RMC address of the selected indoor unit is displayed. When an error occurred,it shows the RMC address of the indoor unit where the error occurred.321456789101112123456789101112131415161718191918171615141305-2_control systems(046~081) 3/6/08 14:02 Page 66