6To adjust initial settingsDealerSelect menus and determine settings according to the system available in thehousehold. It is recommended that all alterations of settings are done by anauthorised dealer or specialist.• After initial installation, you may manually adjust the settings.The initial setting remains active until the user changes it.• The control panel can be used for multiple installations.• Ensure the operation LED is OFF before setting.• The system may not work properly if set wrongly. Please consultan authorised dealer.1 Press and simultaneously and hold for5 seconds until the display shows SETTING STATUS.2 Press or to select the menu.3 Press to enter the menu.4 Press or to select Yes/No, or other options.YES: to enable the menuNo: to disable the menu5 Press to confirm.Control PanelDisplayOperation LEDMenu (1 ~ 20) Setting Display1 Room Thermostat ConnectionTo select whether or not to connect to the optional room thermostat. YES NO2 Indoor Backup Heater SelectionTo reduce the heater power if unnecessary.*Options of kW vary depending on the model.*3 kW / 6 kW /9 kW3 Water System Freeze PreventionTo activate or deactivate the water freeze prevention when the system is OFF. YES NO4 Tank ConnectionTo select whether or not to connect to the optional water tank unit.Note: If NO is selected, menus 5 to 15 are skipped.YES NO5 Solar PriorityTo select the use of solar panel for heating up the water tank. YES NO6 *1, *2 Cooling PriorityTo choose the room cooling as priority during COOL + TANK mode.Note: If YES is selected, menus 8 and 9 are skipped for COOL + TANK mode.YES NO7 Heating PriorityTo select the room heating as priority during HEAT + TANK mode.Note: If YES is selected, menus 8 and 9 are skipped for HEAT + TANK mode.YES NO8 *1, *2 Cooling/Heating Operation IntervalTo set the interval for COOL or HEAT mode during COOL + TANK or HEAT +TANK mode.Note: If YES is selected in menus 6 and 7, this menu is skipped.0.5 hours ~10 hours9 *1 Tank Heat-up IntervalTo set the interval for the water tank during COOL + TANK or HEAT + TANKmode.Note: If YES is selected in menus 6 and 7, this menu is skipped.5 minutes ~1 hour 35 minutes