Carrier Comfort Non-Programmable User manual

Comfort™Non-Programmable Owner’s Manual

You will love this thermostat.
1
This Comfort™non-programmable thermostat is an
easy to use model that provides the most sought-after
features for keeping your home comfortable. And with
aslim profile, it is designed to be as smart – and smart-
looking – as anyof the other electronics in your home.
Let this manual show you how easy it is to enjoy the
newest experience in home comfort.

Table of Contents
2
Button Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
On-screen Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Operating the Thermostat
Setting the temperatures for heating and cooling . . . . . . . . . . . . . .8
Using the fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Using emergency heat (heat pump systems only) . . . . . . . . . . . . .10
Installing or replacing the batteries . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Using the thermostat to turn the heating and cooling system off . .14
Auto changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Advanced Options
Advanced options display codes chart . . . . . . . . . . . . . . . . . . . . . . .15
Changing from Fahrenheit to Celsius . . . . . . . . . . . . . . . . . . . . . . . . .16
Turning on the continuous backlighting . . . . . . . . . . . . . . . . . . . . . . .17
Keypad lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Unlocking the keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

Table of Contents
3
What If . . .
The battery icon is displayed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
“Aux heat on” is displayed (heat pump systems only) . . . . . . . . . .20
“Em heat” is displayed (heat pump systems only) . . . . . . . . . . . . .20
Thereis a power outage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
You get a system error message . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Common Terms and Whereto Find Them
Auto changeover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Auxiliaryheat (heat pump systems only)......................22
Backlighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Emergency heat (heat pump systems only) . . . . . . . . . . . . . . . . . . .22
Hold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24

4
Button Identification
a
bc
d

5
Button Identification
FAN Selects whether the fan operates continuously (on) or only when needed for
heating or cooling (auto)
MODE Selects whether thermostat is set for heating, cooling, emergency heat (heat
pump system only), auto (heat and cool as needed), or off
UP Increases the temperature or adjusts the screen selection up when setting
advanced features
DOWN Decreases the temperature or adjusts the screen selection down when
setting advanced features
a
b
c
d

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On-Screen Indicators
actual temp
off
Em
heat
aux
heat
on
fan
auto
fan
on
f
F
C
cool
on2
set at
1
2
3
4
5
6
7
8
9
10

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On-Screen Indicators
1. Fan mode – on or auto
2. System is in auxiliary (supplemental) mode
3. Current temperature
4. Thermostat mode is either off or using emergency heat
5. Fahrenheit
6. Keypad is locked (no padlock means unlocked)
7. Celsius
8. Battery strength indicator
9. Selected cooling set point; “on”indicates system is in cooling mode
10. Second stage of cooling is active

8
Operating the Thermostat
Setting the temperatures for heating and cooling
Your thermostat is installed with the heating set at 68° F and the
cooling set at 72° F. You can use these or change them so your home
is as warm or as cool as you would like it to be. These steps will hold
the temperature where you set it.
1. To change the heating temperature, press the mode
button on the left until the screen says heat.
2. Press the up or down button located on the right side
of the display until you reach the desired temperature.
3. To change the cooling temperature, press the mode
button on the left until the screen says cool.
4. Press the up or down button located on the right side
of the display until you reach the desired temperature.

9
Operating the Thermostat
Using the fan
When the fan is on, it helps distribute air throughout your home for a
more even temperature in all spaces. You can set the thermostat so
that the fan runs only during your heating and cooling cycles (auto
mode) or to run continuously.
The thermostat is set at the factory to run automatically as needed.
Here’s how to change the setting so it runs continuously.
1. Press the fan button on the left. The display message
will change from auto fan to fan on.
2. To return the fan to auto mode, press the fan button
again. You will see fan auto on the display.

10
Operating the Thermostat
Using emergency heat (heat pump systems only)
Emergency heat is useful when the automatic auxiliary heat system
can’t keep up with demand. (Systems with heat pumps use “auxiliary
heat” when it’s too cold outside for the heat pump to heat the house
without help. The display indicator for this is aux heat on.)
If the heat pump compressor that works with auxiliary heat fails, or if
the heat pump isn’t working at all, you can turn on the emergency
heat for that extrahelp. (You’ll know there’s a problem if the house
can’t seem to get warm when it’s very cold outside.) You want to avoid
using emergency heat, though, because it’s the most expensive
option. And, of course, if you suspect a problem with your heat pump,
call your heating and cooling dealer immediately.
Here’s how to set your thermostat to use emergency heat.
1. Press the mode button repeatedly until you see Em
heat in the upper left of the display.
2. To turn off emergency heat, press the mode button
again to select heat, cool or auto.

11
Operating the Thermostat
Installing or replacing the batteries
You can install batteries in your thermostat so that if the power goes
out, the display will still show the indoor temperature.
In some situations, batteries are also the power source. Then, two AA
batteries should last about one year. When the batteries have lost
about one-third of their power, a battery icon appears on the display.
Two-thirds of it will be black. As the batteries get weaker, the icon
goes down to one black bar and then none. When the icon is empty,
youwillbegin to losethermostat functions when it is battery powered.
When the batteries are completely dead, you won’t be able to use the
thermostat.
When using batteries for power, we recommend that you replace the
batteries at the one bar level with two AA alkaline batteries. They’re in
the back of the thermostat, so you’ll have to remove it from the wall.
Here’s how to both install and replace batteries.
1. Locate the latch at the top of the thermostat.
It’s at the center of the top rim.

12
Operating the Thermostat
2. Press it down. This will disconnect the thermostat
from the top of the wall plate.
3. Remove the thermostat from the wall bracket
completely bybringing it slightly toward you and
lifting it up and off the lip on the lower edge of the
wall bracket.
4. Set the thermostat face down on a flat surface. You
will see the batteries in the lower right corner.
5. Remove and discard the old batteries.
6. Install new batteries by matching the “plus” and
“minus” ends of the batteries with the “plus” and
“minus” indicators you’ll see outside the two white
battery shapes in the space where the batteries sit.
7. Snap the batteries into place.
8. Put the thermostat back on the wall bracket by lining up the
slot on the bottom edge of the back of the thermostat with the

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Operating the Thermostat
lip on the wall bracket. You will feel the slot
fit over the lip.
9. With the bottom of the thermostat attached to
the bottom of the wall bracket,bring the thermostat
back to the wall. Line up the latch at the top of
the thermostat with the corresponding lip on the
wall bracket.
10.Lightly push the thermostat toward the wall. When the latch and lip
are lined up properly, you will hear the thermostat snap into place.
11. Closethe door.

14
Operating the Thermostat
Using the thermostat to turn the heating and cooling system off
To use the thermostat to turn the heating and cooling
system off, press the mode button on the left repeatedly
until the display shows off in the upper left.
Auto changeover
The thermostat uses one of five modes: heat, cool, Em heat (heat
pump version only), auto,and off.When the mode selection is auto,
the thermostat is in auto changeover mode. This allows the system
to switch from heating to cooling – or from cooling to heating – to
maintain the temperatures you’ve set. It does this automatically.

15
Advanced Options
Advanced options display codes chart
You can customize a few features of your thermostat. This chart
shows which features you can change and the codes associated
with them. The codes will be shown on the display when you follow
the instructions.
Feature Configuration Code Change Indication
Fahrenheit to
Celsius U1 For C
backlighting U2 On or Of
keypad lockout U3 Of, On, padlock

16
Advanced Options
Changing from Fahrenheit to Celsius
Your thermostat is preset to display the temperature in degrees
Fahrenheit. You can change this to Celsius.
1. Press and hold the mode button for about three
seconds. The display will show U1 and the letter F
in the center.
2. Press the up or down button on the right to change it
from F(Fahrenheit) to C(Celsius).
3. Press the fan button on the left to exit this screen.

17
Advanced Options
Turning on the continuous backlighting
The thermostat display lights up for a few seconds after you press any
button. This is backlighting. It will go dark after a few seconds.
If the thermostat is powered by electricity, it is possible to have a
constant low level amount of backlighting until you press any button,
which increases the lighting temporarily. Here’s how to turn on the
constant backlight when your thermostat is powered by electricity.
1. Press and hold the mode button for about three
seconds. The display will show U1 and the letter F
in the center.
2. Press the mode button twice. The display will show U2
and Off.
3. Press the up or down button on the right to change it
from Off to On.
4. Press the fan button on the left to exit this screen.

18
Advanced Options
Keypad lockout
The keypad lockout feature lets you “lock” the thermostat so nobody
can change the temperature – or make any other changes – by pressing
buttons. Keypad lockout is not activated when the thermostat is
installed. Here’s how to activate it.
1. Press and hold the mode button for about three
seconds. The display will show U1 and the letter F
in the center.
2. Press the mode button until the display shows U3 and
Of.
3. Press the up or down button on the right to change
it from Of to On. You will also see a padlock, which
indicates the keypad is locked.
4. Press the fan button on the left to exit this screen.