SiUS12-928_B CTXS-L, FTXS-L SeriesOperation Manual 1083.11 Note for Multi System28Note for Multi SystemNOTE Notes on operation mode for multi systemCAUTIONWith the priority room setting active.Refer to “Priority room setting” on the next page. NIGHT QUIET mode (Available only for COOL operation) OUTDOOR UNIT QUIET operationRefer to “OUTDOOR UNIT QUIET operation”. Page 18With the priority room setting present but inactive or not present.With the priority room setting active.Refer to “Priority room setting” on the next page.Multi system has one outdoor unit connected to multiple indoor units. Selecting the operation modeA room B roomC room D roomOutdoor unitWith the priority room setting present butinactive or not present.When more than one indoor unit is operating, priority is given to thefirst unit that was turned on.In this case, set the units that are turned on later to the same operationmode as the first unit.Otherwise, they will enter the standby state, and the OPERATIONlamp will flash: this does not indicate malfunction.• COOL, DRY and FAN operation may be used at the same time.• AUTO operation automatically selects COOL operation or HEAT operation based on the room temperature.Therefore, AUTO operation is available when selecting the same operation mode as that of the room with the first unit to be turned on.• Normally, the operation mode in the room where the unit is first run is given priority, but the following situations are exceptions, so please keep thisin mind.If the operation mode of the first room is FAN operation, then using HEAT operation in any room after this will give priority to HEAT operation. Inthis situation, the air conditioner running in FAN operation will go on standby, and the OPERATION lamp will flash.NIGHT QUIET mode requires initial programming during installation. Please consult your retailer or dealer for assistance.NIGHT QUIET mode reduces the operation noise of the outdoor unit during the nighttime hours to prevent annoyance toneighbors.• The NIGHT QUIET mode is activated when the temperature drops 10.8˚F (6˚C) or more below the highest temperature recorded that day.Therefore, when the temperature difference is less than 7.2˚F (4˚C), this function will not be activated.• NIGHT QUIET mode reduces slightly the cooling efficiency of the unit.When using the OUTDOOR UNIT QUIET operation feature with the Multi system, set all indoor units to OUTDOOR UNITQUIET operation using their remote controllers.When clearing OUTDOOR UNIT QUIET operation, clear one of the operating indoor units using their remote controller.However OUTDOOR UNIT QUIET operation display remains on the remote controller for other rooms.We recommend you release all rooms using their remote controllers.
