Configuration Mode Settings
The setup screens for Configuration Mode are as follows:
1.
Temperature Scale
(F or C)
Choose Fahrenheit or Celsius.
Press the
up
or
down
button to select.
Press the
right
button to advance to the next screen.
2.
1
st
Stage Temperature Differential
(1°F to 5°F) (0.5°C to 2.5°C)
Set the number of degrees between your “setpoint” temperature and your “turn on”
temperature.
Press the
up
or
down
button to set differential value.
Press the
right
button to advance to the next screen.
4.
Staged Off Outputs
Select whether the outputs for heating and cooling are staged off independently or
are satisfied simultaneously.
1 = outputs staged off independently
0 = outputs off simultaneously
Press the
up
or
down
button to set.
Press the
right
button to advance to the next screen.
5.
Minimum Deadband
(1°F to 9°F) (1°C to 5°C)
Set the minimum separation between heat setpoint and cool setpoint in
Auto
Changeover
Mode.
Press the
up
or
down
button to set deadband value.
Press the
right
button to advance to the next screen.
3.
2
nd
Stage Temperature Differential
(1°F to 5°F) (0.5°C to 2.5°C)
Set the number of degrees between when stage 1 turns on and when stage 2 turns on.
Press the
up
or
down
button to set differential value.
Press the
right
button to advance to the next screen.
6.
Maximum Heat Setpoint
(55°F to 90°F) (13°C to 32°C)
Adjust to control the maximum heat set temperature allowed.
Press the
up
or
down
button to select.
Press the
right
button to advance to the next screen.
7.
Minimum Cool Setpoint
(55°F to 90°F) (13°C to 32°C)
Adjust to control the minimum cool set temperature allowed.
Press the
up
or
down
button to select.
Press the
right
button to advance to the next screen.
9.
Temperature Sensor
(1-3)
1. Only on-board sensor determines room temperature.
2. Only remote sensor determines room temperature.
3. Average temperature of on-board and remote sensor.
Note:
If there is no remote sensor, option 1 must be selected.
Press the
up
or
down
button to select.
Press the
configuration
button for two seconds to exit configuration.
8.
Room Temperature Offset
(+9°F to -9°F) (+4.5°C to -4.5°C)
Adjust to calibrate displayed room temperature to match actual room temperature.
Note:
When not set to 0,
will display.
Press the
up
or
down
button to select.
Press the
right
button to advance to the next screen.
Mode of Operation
The
910121746
is a non-programmable, manual or auto changeover, 2-stage heat, 2-stage cool thermostat. An
outdoor sensor can be used to monitor the outdoor temperature.
The thermostat activates the heating appliance when the room temperature is below the set heat temperature (by
the differential temperature). The
910121746
will stop outputting when the call for heat has been satisfied.
When the room temperature is greater than the set cool temperature (by the differential temperature), the cooling
device is activated. The
910121746
will stop outputting when the call for cooling is satisfied.
The
910121746
has four possible operating modes:
OFF
,
Heat
,
Cool
and
Heat & Cool
mode. In off mode, the
thermostat will not turn on heating or cooling devices. The manual fan can be turned on in all operating modes using
the fan button. In heat mode, the thermostat controls the heating system. In the cool mode, the thermostat controls
the cooling system. In heat & cool mode, the thermostat controls both the heating and cooling systems.
Pressing the UP and DOWN buttons simultaneously for 2 seconds then releasing them causes the thermostat to
output from the “O” terminal for 5 seconds. “ Or” will show on the display. This will result in the unit going into a night
set-back override.
Pressing the UP and DOWN buttons simultaneously for 5 seconds causes the thermostat to output from the “O”
terminal for 10 seconds. “ rS” will show on the display. This will result in the unit being reset.
Button Functions
UP
– Used to increase the time, set temperatures and to adjust configuration
settings.
DOWN
– Used to decrease the time, set temperatures and to adjust
configuration settings.
SYS (left)
– Used to change from OFF, HEAT, COOL and AUTO changeover
modes
FAN (right)
– Used to turn on and off the indoor fan.
DOWN and SYS
– Pressed simultaneously to display outdoor remote temperature if remote sensor is
connected.
UP and DOWN
– Used to override night set back or reset the unit.
FAN
(right)
Down
button
Up
button
SYS
tem
(left)
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.
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.
Fan Test
1. Press
FAN
(right) button. Fan displays. Indoor fan turns ON.
2. Press
FAN
(right) button. Indoor fan turns OFF.
OFF
Operating Modes
There are five possible operating modes for the
910121746
. 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.
Symptom
Remedy
No display
Check for 24 VAC at thermostat; display is blank when 24 VAC is not
present
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
Thermostat turns on and off too
frequently
Adjust temperature differential (see Configuration Mode Settings 2 & 3)
Fan runs continuously
Press FAN (right) button to turn fan off
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
: Display is refreshed and configuration settings are unchanged.
Troubleshooting
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.
LIAF179-1
10-15-13
