Daikin 910121748 - Operating Modes; OFF Mode; Heat Mode; Cool Mode

Setting the Time and Day of the Week
TODAY MON
5. PresstheFAN(right)buttononcetoselectdayoftheweek(TODAYashing).
 Presstheupordownbuttontoselectcurrentdayoftheweek.

Note:Atanytime,presstheSYS(left)buttontoreturntothepreviousscreenor
presstheFAN(right)buttontoadvancetothenextscreen.
PressthePROGbuttoninfor2secondstolockvaluesintomemoryandreturntothe
OFFmodeorpresstheFAN(right)buttononcetoenterprogramming.
4. PresstheFAN(right)buttononcetoselectminutes(minutesashing).
 Presstheupordownbuttontoadjusttheminutes.
3. Timedisplays(hourashing).
 Presstheupordownbuttontoadjustthehour.
2. PressandholdthePROGbutton(SYS(left)andFAN(right)buttonspressed
simultaneously)infor6seconds.
1. PresstheSYS(left)buttonuntilyouareintheOFFmode.
Thetimeanddayoftheweekmustbesetforyourprogramscheduletooperatecorrectly.
Testing the Thermostat
Oncethethermostatiscongured,itshouldbethoroughlytested.
 CAUTION! : Donotenergizetheairconditioningsystemwhentheoutdoortemperatureisbelow50
degrees.Itcanresultinequipmentdamageorpersonalinjury.
Heat Test
1.PressSYS(left)buttonuntilheatmodeisdisplayed.
2.Adjustthesettemperaturesoitis5degreesabovetheroomtemperature.
3.Heatshouldcomeonwithinafewseconds.
4.Adjustthesettemperature2degreesbelowtheroomtemperatureandtheheat
shouldturnoff.Theremaybeafandelayonyoursystem.
PM
Cool Test
1.PressSYS(left)buttonuntilcoolmodeisdisplayed.
2.Adjustsettemperaturesoitis5degreesbelowroomtemperature.
3.A/Cshouldcomeonwithinafewseconds.
4.Adjustthesettemperature2degreesabovetheroomtemperatureandtheA/C
shouldturnoff.Theremaybeafandelayonyoursystem.
PM
Fan Test
1. PressFAN(right)button.Fandisplays.IndoorfanturnsON.
2. PressFAN(right)button.IndoorfanturnsOFF.
PM
OFF
Program Mode
• Inthismode,theprogramfunctionison(PROGdisplays),andthethermostat
willautomaticallybecontrolledbythesetprogramschedule.Programmodecan
functionwithheatmode,coolmode,orheat&coolmode.Theprogramschedule
canbeoverriddenbychangingthesettemperature(upordownbutton).After2
hours,theprogramschedulewillautomaticallyberesumed.Tomanuallyreturnto
theprogramschedule,pressthePROGbuttontwice.
PROG
PROG
PROG
Operating Modes
Therearevepossibleoperatingmodesforthe910121748.Off,Cool,Heat,andCool&Heatmodesareaccessed
bypressingtheSYS(left)button.ProgrammodeisaccessedbypressingtheSYS(left)andFAN(right)buttons
simultaneously.
OFF Mode
• Inthismode,thethermostatwillnotturnontheheatingorcoolingdevices

Note:The indoor fan can be turned on manually in every operating mode by
pressing the FAN (right) button. The word FAN shows on the display and
the fan icon appears when the fan operates.
OFF
Heat Mode
• Inthismode,thethermostatcontrolstheheatingsystem.Whentheheatoutputs,
theameicon apprearsonthedisplay.
Cool Mode
• Inthismode,thethermostatcontrolsthecoolingsystem.Whenthecooling
outputs,thesnowakeicon
apprearsonthedisplay.
Cool and Heat Mode (Auto Changeover)
• Inthismode,thethermostatcontrolsthecoolingandheatingsystems,automatically
changingoverfromonetotheotherasneeded.
• Thetimingdisplayalternateswiththesettemperatureevery10secondsinthecool
andheatmode.
Programming
Fromthisscreenyouhave2options:
1. PresstheFAN(right)buttontobeginprogrammingall7daysatonetime,or
2. Pressthe
up
buttontoseetheotherprogrammingoptions.
Note:Thedaysoftheweekshownonthedisplaywillbeprogrammedsimultaneously.
 Thescreensarelistedbelow.
Program Overview
The910121748programmablethermostathasfourperiods(MORN,DAY,EVE,NITE)thatarecustomizablefor
eachdayoftheweek.Eachperiodwillhaveastarttime,heattemperature,cooltemperatureandprogrammablefan
option.The910121748monitorsthedayandtime,whilemaintainingthespecicconditionsyouhavechosenfor
eachperiodinyourprogram.
Settingtheprogramschedule:
1. PresstheSYS(left)buttonuntilyouareinOFFmode.
2. PressandholdthePROGbutton(SYSandFANbuttonspressedsimultaneously)for6seconds.
3. PresstheFAN(right)button3times.
4. SUNthruSATareblinking.
SUN MON TUE WED THU FRI SAT
PROG
Screen1 SUN MON TUE WED THU FRI SAT
Screen2 MON TUE WED THU FRI
Screen3 MON
Screen4 TUE
Screen5 WED
Screen6 THU
Screen7 FRI
Screen8 SUN SAT
Screen9 SAT
Screen10 SUN
Fromanyofthescreensonabove,youcanpresstheFAN(right)buttontobeginenteringyourprogramschedule.
Thedaysshownonthedisplaywillallbeprogrammedsimultaneously.
OncetheFAN(right)buttonispressed,MORNblinks.
Usetheupordownbuttontoselectadifferentperiod(MORN,DAY,EVE,NITE).
PressFAN(right)buttontoadvancetothenextscreen.Transitiontimehourblinks.
Usetheupordownbuttontoselectadifferenthour.
PressFAN(right)buttontoadvancetothenextscreen.Transitiontimeminutesblink.
Usetheupordownbuttontoselectdifferentminutes.
PressFAN(right)buttontoadvancetothenextscreen.Heat set temperaturedisplays.
Usetheupordownbuttontoadjusttheheatsettemperature.
PressFAN(right)buttontoadvancetothenextscreen.Cool set temperaturedisplays.
Usetheupordownbuttontoadjustthecoolsettemperature.
PressFAN(right)buttontoadvancetothenextscreen.Programmable fanscreendisplays.
Usetheupordownbuttontoselect:
Choose: Off–Programmablefandisabled
 On–Indoorfanoncontinuously
Note:ProgrammablefanoperatesinProgrammodeonly.
Repeatabovestepstoprogramthefourperiodsperday.
Whentheprogramscheduleiscomplete,pressandholdthePROGbutton(SYSandFANbuttonspressed
simultaneously)infor2secondstoreturntotheOFFmode.
Symptom Remedy
Nodisplay Checkfor24VACatthermostat;displayisblankwhen24VACisnot
present
Timeanddayofweekmustberesetafterextendedpowerloss
Allthermostatbuttonsareinoperative Verify24VACispresent;unitlocksoutwhen24VACisnotpresent
Noresponsewithrstbuttonpress Firstbuttonpressactivatesbacklightonly
Programscheduleactivatesatthe
wrongtime
Checktime(AM/PM)setonthermostat(seeSettingtheTime)
Thermostatturnsonandofftoo
frequently
Adjusttemperaturedifferential(seeCongurationModeSettings2&3)
Thermostatdoesnotfollowprogram Verifyitisoperatinginprogrammode(PROGdisplays);checktime
(AM/PM);checkifin2hourprogramoverride
Fanrunscontinuously PressFAN(right)buttontoturnfanoff
Fanturnsonoccasionally ProgramMode:Checkprogrammablefansettinginprogramschedule
Statusindicatoron WSHPstatusblinkcode
Roomtemperatureisnotcorrect Calibratethermostat(seeCongurationModeSetting8)
Ifremotesensorisused,checkS1andS2terminalconnections
ondisplayinsteadofroom
temperature
CheckforabadconnectionatS1andS2terminals,ifused
(seeCongurationModeSetting9)
HeatorCoolnotcomingon Verifywiringiscorrect,gentlypulloneachwiretoverifythereisagood
connectionatterminalblock
Alarmlighton Unitinalarmlockoutcondition
Problemnotlistedabove PressResetbuttononce*
* Reset Button Function: Timeanddayarereset,congurationandprogramsettingsareunchanged.
Troubleshooting
THURSDAY
4
FRIDAY
5
SATURDAY
6
SUNDAY
7
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
MORN DAY EVE NITE
HEAT HEAT HEAT HEAT
COOL COOL COOL COOL
FAN FAN FAN FAN
Personal Program Schedule
MONDAY
1
TUESDAY
2
WEDNESDAY
3
Factory Preprogramming
MORN 6:00 AM DAY 8:00 AM EVE 6:00 PM NITE 10:00 PM
HEAT 70°F HEAT 62°F HEAT 70°F HEAT 62°F
COOL 78°F COOL 85°F COOL 78°F COOL 82°F
FAN Off FAN Off FAN Off FAN Off
MONDAY
thru
SUNDAY
The910121748comespreprogrammedwiththefollowingschedule:
Usethefollowingpersonalprogramscheduletorecordyoursettings:
Daikin Training and Development
Now that you have made an investment in modern, efficient Daikin equipment, its care should be a high priority. For
training information on all Daikin HVAC products, please visit us at www.DaikinApplied.com and click on Training,
or call 540-248-9646 and ask for the Training Department.
Warranty
All Daikin equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product
Warranty. Consult your local Daikin Representative for warranty details. Refer to Form 933-430285Y. To find your
local Daikin Representative, go to www.DaikinApplied.com.
Aftermarket Services
To find your local parts office, visit www.DaikinApplied.com or call 800-37PARTS (800-377-2787). To find your
local service office, visit www.DaikinApplied.com or call 800-432-1342. This document contains the most current
product information as of this printing. For the most up-to-date product information, please go to
www.DaikinApplied.com.
Products manufactured in an ISO certified facility.
LIAF178-110-15-13