Setting the Time and Day of the Week
TODAY
MON
5. Press the
FAN
(right) button once to select day of the week (TODAY flashing).
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 flashing).
Press the
up
or
down
button to adjust the minutes.
3. Time displays (hour flashing).
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 configured, 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 five 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 flame icon apprears on the display.
Cool Mode
• In this mode, the thermostat controls the cooling system. When the cooling
outputs, the snowflake 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 specific 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 first 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 Configuration 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 Configuration 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 Configuration 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, configuration 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.
LIAF178-1
10-15-13
