Operating Manual

A multi system has one outdoor unit connected to multiple indoor units.
Selecting the operation mode
When the priority room setting is active
but the set unit is not operating or when
the priority room setting is inactive
When more than one indoor unit is operating, priority is given to
therstunitthatwasturnedon.
In this case, set the units that are turned on later to the same
operationmodeastherstunit.
Otherwise,theywillenterthestandbystate,andwhenusingthewired
remotecontrollerthecentralizedcontrolicon“CENTRALCONTROL”
will light up; this does not indicate malfunction.
NOTE
Notes on operation mode for a multi system
•COOL,DRYandFANoperationmaybeusedatthesametime.
•AUTOoperationautomaticallyselectsCOOLoperationorHEAToperationbasedontheindoortemperature.
Therefore,AUTOoperationisavailablewhenselectingthesameoperationmodeasthatoftheroomwiththerstunittobeturnedon.
CAUTION
•Normally,theoperationmodeintheroomwheretheunitisrststartedisgivenpriority,butthefollowingsituationsareexceptionstothisrule.
IftheoperationmodeoftherstroomisFANoperation,thenusingHEAToperationinanyroomafterthiswillgiveprioritytoHEAToperation.In
this situation, the indoor unit operating in FAN mode will switch to standby, and when using the wired remote controller the centralized control
icon
“
CENTRALCONTROL”willlightup.
With the priority room setting active
Refer to “Priority room setting”onthenextpage.
NIGHT QUIET mode (Available only for COOL operation)
NIGHTQUIETmoderequiresinitialprogramingduringinstallation.Pleaseconsultyourretailerordealerforassistance.
NIGHTQUIETmodereducestheoperationnoiseoftheoutdoorunitduringthenight-timehourstopreventannoyancetoneighbours.
•NIGHTQUIETmodeisactivatedwhenthetemperaturedrops43°F(6°C)ormorebelowthehighesttemperaturerecordedthatday.
Whenthetemperaturedifferencebetweenthecurrentoutdoortemperatureandthemaximumoutdoortemperaturebecomeslessthan39°F
(4°C),thisfunctionwillbecanceled.
•NIGHTQUIETmodeslightlyreducesthecoolingefciencyoftheunit.
OUTDOOR UNIT QUIET operation (Function unavailable in the FDMQ series)
FordetailsonOUTDOORUNITQUIEToperation,refertotheoperationmanualincludedwiththeremotecontroller.
When the priority room setting is active but the set unit is not operating or when the
priority room setting is inactive
WhenusingtheOUTDOORUNITQUIEToperationfeaturewithamultisystem,setallindoorunitstoOUTDOORUNIT
QUIEToperationusingtheirremotecontrollers.
WhencancelingOUTDOORUNITQUIEToperation,simplycancelthemodeononeoftheoperatingindoorunitsusingtheirremotecontroller.
HoweverOUTDOORUNITQUIEToperationwillremaindisplayedontheremotecontrollersfortheotherrooms.
We recommend you cancel operation in all rooms using their remote controllers.
With the priority room setting active
Refer to “Priority room setting”onthenextpage.
Room A Room B
Room C Room D
Outdoor unit
Note for Multi System
5 English
01_EN_3P500431-1.indd 5 10/12/2017 11:57:50