Carrier TOTALINE Gold P274-0200-C Instructions and recipes

INSTALLATION,
START UP, AND OPERATING
INSTRUCTIONS
Residential
Non-Programmable
Thermostat
Part Numbers P274-0100-C, P274-0200-C, P274-0300-C
TABLE OF CONTENTS
SAFETY CONSIDERATIONS ...................... 1
INTRODUCTION .................................. 1
INSTALLATION CONSIDERATIONS ............... 1
INSTALLATION ................................. 2-9
Step 1 -- Thermostat Location ................... 2
Step 2-- Select Model ........................... 2
Step 3 -- Install Thermostat ...................... 2
Step 4 -- Set Thermostat Configuration .......... 3
•TO ENTER CONFIGURATION MODE
•OPTION 01 -- ANTICIPATOR ADJUSTMENT
• OPTION 02 -- CLEAN FILTER TIMER
• OPTION 03 -- FAHRENHEIT/CELSIUS SELECTION
•OPTION 04 --G (FAN) ON WITH W/WI OUTPUT
• OPTION 05 -- HP AND 2S/AC CONFIGURATION
• OPTION 06-- COOLING LOCKOUT
• OPTION 07 -- ZONING ON/OFF CONFIGURATION
• OPTION 08 -- HIGH AMBIENT AUXILIARY HEAT
LOCKOUT
• OPTION 10 -- O (Reversing Valve) ON WITH HEAT
OR COOL SELECTION
• OPTION 13 -- ROOM TEMPERATURE OFFSET
• OPTION 15 -- AUTO MODE ON/OFF SELECTION
• OPTION 18 -- BACKLIGHT CONFIGURATION
•OPTION 19 -- NUMBER OF WIRES
• OPTION 21 -- KEYPAD LOCKOUT
Installer Test Mode ............................... 5
Terminating Installer Test ........................ 5
Step 5 -- Check Thermostat Operation ........... 5
• FAN OPERATION
•OUTDOOR TEMPERATURE SENSOR
• CHECKLIST
OPERATIONAL INFORMATION .................. 10
NON-PROGRAMMABLE THERMOSTAT
CONFIGURATION RECORD ................... I I
NOTE: Read the entire instruction manual before beginning
installation.
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions camlhlly. Fol-
low all local electrical codes during installation. All wiring
must conform to local and national electrical codes. Improper
wiring or installation may dmnage thermostat.
INTRODUCTION
Tot_fline thermostats me wall-mounted, low-voltage ther-
mostats which maintain room temperature by controlling the
operation of a heating and air conditioning system. Separate
heating and cooling set points, plus autochangeover provide
maximum comfort and flexibility. Temperature and mode set-
tings ale preserved with the power off when optional batteries
are used.
INSTALLATION CONSIDERATIONS
Power- All non-programmable thermostats can be dual
powered either by battery operation or electrical operation. AA
batteries are included wifll the product.
Models -- Ensure the proper thermostat is selected for the
intended application. Refer to Fig. 1 for thermostat dimensions.
Select from the following models:
1. P274-0100-C -- l-stage cool, l-stage heat for air-
conditioning systems only.
2. P274-0200-C -- 1-stage cool, 2-stage heat for a single
speed heat pump, or an air conditioner with 2-stage
heat.
3. P274-0300-C -- 2-stage cool, 2-stage heat for 2-speed
air-conditioning systems, or 2-stage cool, 3-stage heat
for 2-speed heat pump systems.
Mode Button
selects be_,oen HEAT
COOL AUTO and OFF operation
Heat pump thetrr c_tat models also m Fan Button
Fndude an EMERGENCY HEATmode¸
up
increase o_ decrease the
desked tempe atur6 setting
LOW BATTERY Indicator _
wJl_ light when batteries
(il In_tal_ed) need t° be replaced
Outdoor Temperature Dlgplay-
Is an optiona_ feature that shows the
outdoor temperature on the LCD
readout
SERVICE FILTER Indicator
lets you know _ _s time to clear_
of replace your systems a# f_lter
Room Temperature Display _
shows cu_ro_t room temperature
COOL ON MdlcMor J
_sd_spl_yed w_on the
cooling equipment is operating /
HEAT ON Indicator
Is d_sp_ayed when the
heating equipment _s
opo_ati0g AtJXlUARY HEAT Indicator
Fs displayed when a heat pump
system Is operat[ng with auxflla*y
heat a[r filter
P274-0100-C
P274-0200-C
P274-0300-C
HEIGHT (in.) WIDTH (in.) DEPTH (in.)
3V2 53/4 13/8
Fig. 1 -- Totaline Non-Programmable Thermostat
Manufacturer reserves the right to
discontinue, or change at any time,
specifications or designs without notice
and without Incurring obligations.
REPLACEMENT COMPONENTS DIVISION
©CARRIER CORPORATION 2004 9-04
PRINTED IN U.S.A.
LITERATURE NUMBER P274-7SI
REPLACES: 997-510011-19
CATALOG NUMBER 570-351

INSTALLATION
Step 1 -- Thermostat Location
Thermostat should be mounted:
• Approximately 5 fl (1.5 m) from floor.
• Close to or in a frequently used room, preferably on an
inside partitioning wall.
• On a section of wall without pipes or ductwork.
Thermostat should NOT be mounted:
• Close to a window, on an outside wall, or next to a door
leading to the outside.
• Exposed to direct light and heat from a lamp, sun, fire-
place, or other temperature-radiating object which may
cause a false reading.
• Close to or in direct airflow from supply registers and
return-air grilles.
In areas with poor air circulation, such as behind a door or
in an alcove.
Step 2 -- Select Model
P274-0100-C (l-stage cool, l-stage heat) is to be used for
single-stage heating and/or cooling applications only. It
CANNOT be used with optional outdoor temperature sensol:
(See Table 1.)
P274-0200-C (l-stage cool, 2-stage heat) can be used with a
single-speed heat pump (HP), or tin air conditioner (AC) with a
2-stage furnace or fan coil. When using the thermostat
softwme (Configuration mode) select Option 5, HP/AC con-
figuration. This thermostat comes configured from the factory
as a heat pump thermostat. Select AC in Option 5 for AC oper-
ation. When AC operation is selected, the O/W2 terminal is
converted from a reversing valve output (O) to a second-stage
heat output (W2). This output can be used to control 2-stage
furnaces or 2-stage electric heat in fan coils. (See Table 1.)
P274-0300-C is for 2-speed compressor systems only (HP and
AC). Output YI controls compressor low speed and output
Y/Y2 controls compressor high speed. (See Table 1.)
Step 3 -- Install Thermostat
c. As each wire is disconnected, record wire color
and terminal marking.
d. Discard or recycle old thermostat.
NOTE: Mercury is a hazardous waste and MUST be dis-
posed of properly.
3. Open thermostat (mounting base) to expose mounting
holes. The base can be removed to simplify mounting.
Snap apart carefully to separate mounting base from
remainder of thermostat.
NOTE: If thermostat will not separate, insert a small screw-
driver into top slots for ease of separation.
4. Route thermostat wires through large hole in mounting
base. Level mounting base against wall (for aesthetic
value only -- thermostat need not be leveled for
proper operation) and mark wall through 2 mounting
holes.
5. Drill two 3/lr,-in. mounting holes in wall where
marked.
6. Secure mounting base to wall with 2 anchors and
screws provided, (additional anchoring holes available
for more secure mounting if needed) making sure all
wires extend through hole in mounting base.
7. Adjust length and routing of each wire to reach proper
terminal and connector block on mounting base with
I/4 in. extra wire. Strip only 1/4 in. insulation from each
wire to prevent adjacent wires from shorting together
when connected.
8. Match and connect equipment wires to proper termi-
nals of the connector blocks. (See Table 1.)
ELECTRICAL OPERATION HAZARD
Failure to follow this caution may result in equipment dim-
age or improper operation.
hnproper winng or installation may dmnage the therlno-
stat. Check to make sure wiring is correct before proceed-
ing with installation or turning on unit.
ELECTRICAL SHOCK HAZARD
Failure to follow this wmning could result in personal
injury or death.
Before installing thermostat, turn off all power to unit.
There may be more than 1 power disconnect.
I.
2. Turn OFF all power to unit.
If an existing thermostat is being replaced:
a. Remove existing thermostat from wall.
b. Disconnect wires from existing thermostat, one at
atime. Be careful not to allow wires to fall back
into the wall.
9. Push any excess wire into wall and against mounting
base. Seal hole in wall to prevent air leaks. Leaks can
affect operation.
10. Snap case back together.
11. Close thermostat assembly making sure pins on back
of circuit board align with sockets in connector.
12. Turn ON power to unit.
NOTE: If a common wire has not been connected two AA
batteries must be used to power the thermostat.
Table 1 -- Model Selection and Wiring Diagram Chart
AIR CONDITIONER HEAT PUMP
INDOOR UNIT 1 Speed 2 Speed 1 Speed 2 Speed
1-Stage Model 0100-C Model 0300-C Requires Requires
Heat See Fig. 2 See Fig. 8 Dual Fuel Thermostat Dual Fuel Thermostat
2-Stage Model 0100-C Model 0200-C Model 0300-C Requires Requires
Heat See Fig. 3 See Fig. 5 See Fig. 9 Dual Fuel Thermostat Dual Fuel Thermostat
Model 0100-C Model 0200-C Model 0300-C Model 0200-C Model 0300-C
Typical Fan Coil See Fig. 4 See Fig. 6 See Fig. 10 See Fig. 7 See Fig. 11
Variable-Speed Fan Coil Model 0100-C Model 0200-C Model 0300-C Model 0200-C Model 0300-C
(FK4D, FV4, 40FK) See Fig. 12 See Fig. 13 See Fig. 14 See Fig. 15 See Fig. 16
*Model 0100-C will only cycle through 1-stage heat, but can properly operate when installed on a 2-stage heat system.

On power up, LCD readout will display AC, HE A2, or H2
depending on the thermostat model status and if the equipment
is powering the thermostat. Refer to Operational Information,
Power On Check on page 10 for more information.
Step 4 -- Thermostat Configuration -- Configu-
ration options are intended to be selected at inst_dlation and are
nonn_dly not modified by the home owner These options are
not discussed in the Homeowner's Guide and therefore must
be made as p_ut of the installation. A special procedure allows
entry into the Configuration mode. The themlostat will auto-
matically exit this mode if no button is pressed for 3 minutes.
While in the configuration mode, up to 14 option choices can
be made:
Option 01: Anticipator setting
Option 02: Clean filter setting
Option 03: Fahrenheit or Celsius selection
Option 04: Enable fan (G) on with W/Wl output
Option 05: HP/AC
Option 06: Cooling Ix_ckout (available only if an outdoor air
tempemtme sensor is present)
Option 07: Enable zoning
Option 08: Auxiliary heat lockout temperature adjustment
(available only on heat pump systems and if an outdoor air
temperature sensor is present)
Option 10: O (reveLsing valve) ON with Heat or Cool (present
on Heat Pump models only)
Option 13: Room temperature offset adjustment
Option 15: Enable AUTO mode
Option 18: Backlight configuration
Option 19: Number of wires
Option 21: Keypad Lockout
An explanation for each of these and how to enter the con-
figuration mode follows.
TO ENTER THE CONFIGURATION MODE -- To enter
Configuration Mode, hold the FAN button down for approxi-
mately 15 seconds. After 15 seconds, Option 01 will appear in
the display and the SERVICE icon will be turned on.
NOTE: If the FAN button is pressed again or if no button is
pressed for 3 minutes, the thermostat will exit Configuration
mode and return to normal operation. To reenter the Config-
uration mode, press and hold the FAN button for 15 seconds.
While In Configuration Mode -- The display is used to show
both the option number and the selection choice within that
option.
OPTION 01 -- ANTICIPATOR ADJUSTMENT -- This ad-
justment controls the sensitivity and cycle rate of the thermo-
stat. Higher numbers decrease the sensitivity and slow the
cycle rate. Lower numbers increase sensitivity and inoease
cycle rate. HoweveL a limiting feature will not _dlow more
than 6 equipment cycles per hour. regardless of setting. Vtdues
can range from 1 to 9. The factory default setting is 3. This
default selection will provide optimum performance in nearly
all instalhnions. Do not change setting unless there is evidence
of need to do so.
Unlike conventiomd anticipators, this setting is not to be de-
termined by current di'aw. There is no need to measure, know.
or compensate for current. There is _dso no droop with this
thermostat, legardless of anticipator setting. This adjustment
controls only sensitivity and cycle rate up to the maximum of 6
cycles per hi:
To adjust:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 01. The
SET icon should be off.
3. Press MODE button once. The SET icon will appeac
Option 01 setting is now displayed.
4. Use up and down buttons to move between the avail-
able Option 01 values of 1 to 9. The factory default is 3.
5. Press MODE button again to return to Option 01. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 02- CLEAN FILTER TIMER--This option selects
the number of hours of blower operation (heating, cooling, or
fan) before the SERVICE FILTER icon is displayed. With OF
selected, the icon will never appear, disabling this feature.
Time selection can be from 400 to 3600 hours by selecting
numbeLs 1 through 9. (Time is 400 times number selected.)
Factory default is 2 (800 houL's). Recommended selections for
blower operation are:
• disposable tilter 800 hr
• media tilter 1200 to 1600 hr
• electronic air cleaner 1600 to 2400 hr of blower operation.
To adjust:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 02. The
SET icon should be off.
3. Press MODE button once. The SET icon will appem:
The Option 02 setting is now displayed.
4. Use up and down buttons to move between the avail-
able Option 02 values of OF and 1 through 9. The fac-
tory default is 2.
5. Press MODE button again to return to Option 02. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 03 -- FAHRENHEIT/CELSIUS SELECTION --
This option selects Fahrenheit or Celsius operation.
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 03. The
SET icon should be off.
3. Press MODE button once. The SET icon will appem:
The Option 03 setting is now displayed.
4. Use up and down buttons to move between the
available Option 03 choices of F (Fahrenheit) or C
(Celsius). The factory default is E
5. Press MODE button again to return to Option 03. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 04 -- G (FAN) ON WITH W/WI OUTPUT --
This selection determines whether the G (fan) output is to be ON
or OFF when any W (furnace or strip heat) output is ON. Most
lhrnaces and fan coils manage their own blowo_ and do not le-
quile a separate G signal. For these applications, select OFE
Some auxilituy heatel5 require a sep_uate G sigmd to turn on the
blowec In this case, select ON. The factoly default is OF (off).
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 04. The
SET icon should be off.
3. Press MODE button once. The SET icon will appem:
The Option 04 setting is now displayed.
4. Use up and down buttons to move between available
Option 04 choices of ON or OF. Factory default is OF.
5. Press MODE button again to return to Option 04. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.

OPTION05-- HPAND2S/ACCONFIGURATION--
ThisconfigurationisavailableonHPand2Smodelsonly.
SelectingACallowstheinst_dlertouseanHPor2Sthermostat
inanACapplication.
Toselect:
1. EnterConfigurationmode.
2. UseupanddownbuttonstodisplayOption05.The
SETiconshouldbeoff.
3. PressMODEbuttononce.TheSETiconwillappeal.
TheOption05settingisnowdisplayed.
4. Useupanddownbuttonstomovebetweenavailable
Option05choicesofACorHRThefactorydefaultis
HR
5. PressMODEbuttonagaintoreturntoOption05.The
SETiconwillnowbeoff.
6. UseupanddownbuttonstoselectanotherOption,or
presstheFANbuttontoexitConfigurationmode.
OPTION06-- COOLINGLOCKOUT--An outdoorair
sensorisrequiredforthislimction.In OF mode, cooling is
available regardless of outdoor temperature. In ON mode,
cooling will not be initiated if the outdoor-air temperature is
below 55 E If file compressor is aheady operating and the out-
door air temperature &ops below 55 E the compressor will
continue to operate until the cooling cycle has completed. [fthe
mode has been set to ON and the outdoor air sensor fails, an E3
error will be displayed.
To select:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display Option 06. The
SET icon should be off.
3. Press MODE button once. The SET icon will appear.
The Option 06 setting is now displayed.
4. Use up and down buttons to move between available
Option 06 choices of OF or ON. The factory default is
OF.
5. Press MODE button again to return to Option 06. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press FAN button to exit Configuration mode.
OPTION 07 -- ZONING ON/OFF CONFIGURATION --
This selection enables or defeats the cycle timel: the staging
timel: and the compressor timeguard. (See Operational Infor-
mation on page 10 for details.) These timers MUST be enabled
(zoning OFF) for noml_fl operation and disabled (zoning ON)
for zoning applications. In zoning applications, the zone con-
trol center performs these timing functions. Tile factory default
is OK
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 07. The
SET icon should be off.
3. Press MODE button once. The SET icon will appear.
The Option 07 setting is now displayed.
4. Use up and down buttons to move between available
Option 07 choices of ON or OF. The factory default is
OF.
5. Press MODE button again to return to Option 07. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 08 -- HIGH AMBIENT AUXILIARY HEAT
LOCKOUT -- Present in HP and 2S models only when con-
figured as a heat pump. Outdoor temperature sensor must be
attached. This selection allows lockout of any electric heat
(W output) when outdoor temperature is above a selected
tempemtme. Temperatures of 5 to 55 F can be selected. Feature
can be disabled by selecting OR Emergency heat (EHEAT
mode) always overrides this feature.
To select or adjust:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 08. The
SET icon should be off.
3. Press MODE button once. The SET icon will come on.
The display now shows Option 08 setting.
4. Use up and down buttons to move between available
Option 08 choices of OF. or 5 through 55 in 5-degree
steps. Factory default is OK
5. Press MODE button again to return to Option 08. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 10 -- O (Reversing Valve) ON WITH HEAT OR
COOL SECTION- This selection is only available on HP
and 2S model thermostats when HP is selected via Option 05.
This selection determines whether the reversing valve is ener-
gized in the Heating (H) or Cooling (C) mode. Factory default
is C, energized in cooling. Use up and down buttons to change
between H and C.
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 10.
3. Press MODE button once. The SET icon will appear.
The Option 10 setting is now displayed.
4. Use up and down buttons to move between available
Option 10 choices of H (heat) or C(cool). Factory
default is C.
5. Press MODE button again to return to Option 10. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press FAN button to exit Configuration mode.
OPTION 13 -- ROOM TEMPERATURE OFFSET -- This
option _dlows c_dibration (or deliberate misc_dibration) of a
room temperature sensol: There are various reasons why the
home owner may want to have displayed temperature adjusted
to a higher or lower value. The selected number is the number
of degrees, plus or minus, which will be added to the actu_fl
temperature. The number can range between -5 and +5. Facto-
ry default is 0. This adjusted v_flue will be used as actual tem-
perature for both display and control action. For example, if 2
is selected, 72 F actu_fl will read 74 E If set point is 72, the
room will control to an actual value of 70 which will be
displayed and acted upon as if it were 72. Tile effect is that a
positive number selection will make the room temperature
lower and vice versa. This thermostat is factory calibrated
within an accuracy of plus or minus 1° E so this adjustment
will provide the best accuracy when set to 0.
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 13. The
SET icon should be off.
3. Press MODE button once. The SET icon will come on.
The Option 13 setting is now displayed.
4. Use up and down buttons to move between available
Option 13 choices of-5 through +5 in 1 degree steps.
The factory default is 0.
5. Press MODE button again to return to Option 13. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.

OPTION 15 -- AUTO MODE ON/OFF SELECTION --
This option allows the installer to enable or disable AUTO
mode (automatic changeover between heat and cool). When
disabled, AUTO icon does not appem when successive presses
of MODE button me used to move between OFE HEAT. and
EHEAT (in heat pump systems). Facto Udefault is ON (AUTO
mode enabled).
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 15. The
SET icon should be off.
3. Press MODE button once. The SET icon will come on.
The Option 15 setting is now displayed.
4. Use up and down buttons to move between available
Option 15 choices of ON or OE Factory default is ON.
5. Press MODE button again to return to Option 15. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 18 -- BACKLIGHT CONFIGURATION -- This
function is only available when the thermostat is operating
from full power via R and C. It is not available when the ther-
mostat operates from battelies. In OF (off) mode, this function
is disabled. The thermostat backlight will normally be off. It
turns on with any button press and stays on for 10 seconds in
between button presses. [n ON mode, this limction is enabled.
The thermostat backlight will normally be on and dim in ap-
pem'ance. The backlight becomes brighter with any button
press and remains bright for 10 seconds. Facto Udefault is OE
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 18. The
SET icon should be off.
3. Press MODE button once. The SET icon will come on.
The Option 18 setting is now displayed.
4. Use up and down buttons to move between available
Option 18 choices of ON or OE The factoUdefault is OE
5. Press MODE button again to return to Option 18. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 19 -- NUMBER OF WIRES -- This selection in-
forms the thermostat of the heat, cool, and fan capabilities of
the installed equipment. Select number 2, 3, or 4 or morn. The
default is 4 or morn.
For equipment with both heat and cool capability and fan
selection, choose 4.
For equipment with only heat or cool, but with fan selec-
tion, choose 3.
For equipment with only heat or cool and no fan selection,
choose 2. Refer to Fig. 2-15 for Thermostat Wiring diagrams.
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 19. The
SET icon should be off.
3. Press MODE button once. The SET icon will come on.
The Option 19 setting is now displayed.
4. Use up and down buttons to move between available
Option 19 choices of 2 through 4. The facto Udefzmlt
is 4 or more.
5. Press MODE button again to return to Option 19. The
SET icon will now be off.
6. Use up and down buttons to select another Option, or
press the FAN button to exit Configuration mode.
OPTION 21 -- KEYPAD LOCKOUT --In OF (off) mode,
the keypad is not locked out and has full functionality. In ON
mode, the keypad is locked out and the lock icon on the display
is illuminated. To unlock the keypad, the user must press
and hold the up and down buttons simultaneously for approxi-
mately 5 seconds. The lock icon is turned off and the keypad
will remain unlocked as long as the user presses a button at
least every 30 seconds or for the entire duration of the installer
test mode. If keypad remains idle for 30 seconds and the
installer test mode is not in operation, the keypad will return to
the locked state and the lock icon will illuminate on the screen.
To select:
1. Enter Configuration mode.
2. Use up and down buttons to display Option 21. The
SET icon should be off.
3. Press the MODE button once. The SET icon will come
on. The Option 21 setting is now displayed.
4. Use up and down buttons to move between available
Option 21 choices of ON or OE The factory default is
OE
5. Press the MODE button again to return to Option 21.
The SET icon will now be off.
6. Use up and down buttons to select another Option, or
press FAN button to exit Configuration mode.
Installer Test Mode -- Installer test will be initiated by
pressing the fan button for 20 seconds (15 seconds will
enter installer setup). InS will appear on the screen and the
SERVICE icon will be illuminated.
1. [n [nstaller Test mode, pressing the MODE button will
change the system operating mode. Note that AUTO
mode is not available in installer test. Heating and
cooling modes must be tested independently.
2. If the mode is set to HEAT. the first stage of heating
will be energized for three minutes (180 seconds), and
then the first and second stages (if a second stage
exists) will turn on for an additional three minutes.
Installer test will always attempt to run a second stage
output whether it is attached or not, providing a mini-
mum of 6 minutes of first stage operation. At the end
of the 6-minute period, the MODE will return to OFE
3. Pressing the FAN button while the heating or cooling
equipment is not running will turn on the FAN relay
and display the FAN icon.
4. If the mode is set to COOL, the first stage of cooling
turns on for three minutes, then first and second stages
(ifa second stage exists) will turn on for three minutes.
5. [fthe mode is set to EHEAT. auxiliary heat turns on for
three minutes, then the mode returns to OFF.
Terminating Installer Test -- After 15 minutes of in-
activity (no button pressed by the installer), thermostat will
automatically revert to normal operation. Pressing RESET
FILTER at any time during installer test will terminate installer
test and return the thermostat to nomml operation.
Step 5 -- Check Thermostat Operation
FAN OPERATION
1. Press FAN button to start continuous fan operation.
The FAN icon turns on.
2. Press FAN button again to stop fan operation. The
FAN icon turns off.
NOTE: Some fan coils have 90-second fan off delay, so fan
may not stop immediately.
See Table 2 for a quick reference of thermostat output.

OUTDOOR TEMPERATURE SENSOR -- If system is
equipped with an outdoor temperature sensor, check its opera-
tion by pressing both the temperature up and down buttons si-
multaneously. Outdoor temperature will be displayed for about
5 seconds. If "--" is displayed, the outdoor temperature sensor
is absent or not properly connected.
CHECKLIST
1. Run equipment through several heating and cooling
cycles to ensure proper operation.
Table 2 -- Non-Programmable -C Thermostat Quick Reference
2. If equipment is to be left in operation, set point and
operating mode must be properly selected.
3. Put away tools and instruments, and clean up debris.
4. Review Homeowner's Guide with ownel:
5. Leave literature packet with owner.
P274 MODEL
NUMBERS
0100-C
0200-C
0300-C
INDOOR UNIT
AC
HP
AC
2-Speed AC
2-Speed HP
LEGEND
AC -- Air Conditioner 2S -- 2-Speed
HP -- Heat Pump N/A -- Not Applicable
THERMOSTAT OUTPUT
Option 5 24v Common Fan Heat Heat Heat
Hot Stage 1 Stage 2 Stage 3
N/A R C G W/W1 N/A N/A
OFF R C G Y/Y2 W/W1 N/A
ON R C G W/W1 O/W2/B N/A
ON R C G W/W1 O/W2/B N/A
OFF R C G Y1 Y/Y2 W/W1
Cool Cool Reversing Valve
Stage 1Stage 2
Y/Y2 N/A N/A
Y/Y2 N/A O/W2/B
Y/Y2 N/A N/A
Y1 Y/Y2 N/A
Y1 Y/Y2 O/W2/B
Model Numbers: P274-0100-C, P274-0200-C, P274-0300-C.
MODEL 0100-C
THERMOSTAT
24VACHOT[]- ....... []
24VACCOMM[]- ....... []--
HEATSTAGE1_ .... -El
OOOLSTAGE15Z]-.... -E}
FAN IN--....... []
HUM
r---'l
See Note 11.
Fig. 2 -- Single-Speed Air Conditioner
with Single-Stage Heat
SINGLE-STAGE SINGLE-SPEED
FURNACE AIR CONDITIONER
TWO-STAGE OR
VARIABLE-SPEED SINGLE-SPEED
FURNACE AIR CONDITIONER
MODEL 0100-C
THERMOSTAT
-[]
rg_-q
-FI
[]
[]
HUM
Fig. 3-- Single-Speed Air Conditioner
with 2-Stage or Variable-Speed Heat
24 VAC HOT _ ....
24 VAC COMM [_-- ....
HEAT STAGE 1 _ .....
COOL STAGE 1 _ .....
FAN [_-- ....
See Notes 1 and 11.
MODEL 0100-C TYPICAL
THERMOSTAT FAN COIL
24 VAC HOT E]'-
24 VAC COMM [_
FAN _]-
COOL STAGE I
HEAT STAGE I
SINGLE-SPEED
AIR CONDITIONER
-[]
_[]__
-El
-E}:-
4_
4g]
"--_ See Notes 6 10 and 11,
...... _-I-€I
...... _-[Z]
Fig. 4 -- Single-Speed Air Conditioner
with Typical Fan Coil
TWO-STAGE OR
MODEL 0200-C VARIABLE-SPEED SINGLE-SPEED
THERMOSTAT FURNACE AIR CONDITIONER
-El
g
[]
HUM
Izzzl
24 VAC HOT _-- .....
24 VAC COMM [_-- .....
HEATSTAGE 1 _ ....
COOL STAGE 1 _ ....
FAN [_-- .....
HEAT STAGE 2 o/wr_
N/A []
N/A []
OUTDOOR FD
SENSOR -11
CONNECTIONLr_
...... ]
See Notes 2, 3, 4 and 11.
Fig. 5 -- Single-Speed Air Conditioner
with 2-Stage or Variable-Speed Heat

MODEL 0200-C
THERMOSTAT
24 VAC HOT I_ - -- --
24 VAC COMM [_-- ....
HEAT STAGE 1 _ ____
COOLSTAGE 1 _ -----
FAN _....
HEATSTAGE2F_ 7__
N/A [] L
N/A []
OUTDOOR FEZ]
SENSOR --I
CONNeCt'ONLFI
TYPICAL
FAN COIL
--[]
_[]_.
-4_-
-El
SINGLE-SPEED
AIR CONDITIONER
.... #-El
.... _q-F1
-El
See Notes 2, 4, 6, 10 and 11.
Fig. 6-- Single-Speed Air Conditioner
with Typical Fan Coil
MODEL 0300-C
THERMOSTAT
24 VAC HOT I_ ....
24 VAC COMM [_ ....
HEAT STAGE 1 _ .....
COOL STAGE 2 F_ .....
FAN _ ....
N/A
COOL STAGE I E_-
N/A []
OUTDOOR rE[]
SENSOR "--I
CONNECT,ONLF_
SINGLE-STAGE
FURNACE
-FI
HUM
i.--i
TWO-SPEED
AIR CONDITIONER
___Q%
_-_
-_-[_
See Notes 2 58, and 11.
Fig. 8 -- Single-Speed Air Conditioner
with Single-Stage Heat
MODEL 0200-C TYPICAL SINGLE-SPEED
THERMOSTAT FAN COIL HEAT PUMP
24 VAC HOT _1]_ __.___ _ __ I_ __ FI
4woco
FAN _---'_J_* t--t
CO-S_GHEI_T.... _q--F1
HEATSTAGE 2 --_--{_______t___[ _
RVSCOOL,NG_--- --_
N/A _r_
N/A
OUTDOORI--FI
SENSOR _1 See Notes 6, 7, 10 and 11.
CONNECTION LD
Fig. 7-- Single-Speed Heat Pump
with Typical Fan Coil
TWO-STAGE OR
MODEL 0300-C VARIABLE-SPEED TWO-SPEED
THERMOSTAT FURNACE AIR CONDITIONER
24 VAC HOT I_-- .... ]E--_ ______ _.___ []
24VAC COMM _----1-r_I___l__D
HEAT STAGE 1 I..T...--I
COOLSTAGE 2 F_ iii ------ --[_ -- FI
FAN
HEAT STAGE 2_
3OOL STAGE 1 _ ---- [_--F_
N/A [] --
OUTDOOR {RD__ ]
SENSOR
CONNECTION See Notes 2, 3 4,8 9, and 11,
Fig. 9 -- Two-Speed Air Conditioner
with 2-Stage or Variable-Speed Heat

MODEL 0300-C
THERMOSTAT
24 VAC HOT El'- - -- --
24 VAC COMM I_ - -- --
HEAT STAGE 1 _ _ _ __
COOL STAGE 2 _ ____
FAN [__ ____
HEAT STAGE 2
COOL STAGE 1 E_
N/A []
OUTDOOR FD
SENSOR --I
CONNECTION LD
TYPICAL TWO-SPEED
FAN COIL AIR CONDITIONER
--I_ -o
..._]- -
G
_[]*_.
-El _eLD
See Notes 2 4 5, 6,8 10 and 11.
Fig. 10 -- Two-Speed Air Conditioner
with Typical Fan Coil
MODEL 0100-C
THERMOSTAT
24 VAC HOT
HEAT STAGE 1
COOL STAGE 1
FAN [_--
24 VAC COMM
EASY SELECT
TERMINAL BOARD
E}
.... E_
--I-i_
.... ]
.... D
[]
[]
SINGLE-SPEED
AIR CONDITIONER
I J1 JUMPER
I J2 JUMPER
q_•
-q-l-q
See Notes 10 and 11.
Fig. 12 -- Single-Speed Air Conditioner
with Variable-Speed (FK4D, FV, 40FK) Fan Coil
MODEL 0300-C
THERMOSTAT
I--I
24 VAC HOT RL_ _ _.
D-
24 VAC COMM
COOL/HEAT
STAGE 2 V-_ c
HEAT STAGE 3 °---I
I--I
RVS COOLING IO/B_21
COOL/HEAT B --- ]
STAGE 1
N/A []
OUTDOOR {____]
SENSOR
CONNECTION
TYPICAL TWO-SPEED
FAN COIL HEAT PUMP
____
_#__
-#-F_
_#__
-q-Fq
See Notes 5 6, 78, 10, and 11.
Fig. 11 -- Two-Speed Heat Pump
with Typical Fan Coil
MODEL 0200-C EASY SELECT SINGLE-SPEED
THERMOSTAT TERMINAL BOARD AIR CONDITIONER
24 VAC HOT I_--
HEAT STAGE 1
24 VAC COMM E],-
COOL STAGE 1
FAN [_--
E}
.....
FI
HEAT STAGE 2 _ ...... D
NJA [] []
NJA [] []
OUTDOORI--FI
SENSOR --I
CONNeCT'ONLF_
I J1 JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
See Notes 2, 4, 10 and 11,
Fig. 13 -- Single-Speed Air Conditioner
with Variable-Speed (FK4D, FV, 40FK) Fan Coil

MODEL 0300-C
THERMOSTAT
24 VOLT HOT E_-- - --
24 VOLT COMM _ --
FAN [_-----
COOL STAGE 2 _ ---
HEAT STAGE 1 _ -- -
EASY SELECT TWO-SPEED
TERMINAL BOARD AIR CONDITIONER
I_ ] J,JOMPER
-D -q-%
-E]- -q-rc-q
-D ........ q-FI
HEAT STAGE 2_ -- -
COOL STAGE 1 E_
N/A []
OUTDOOR F[]
oSE ESO, o D
[]
'J2 JUMPER
FOR HEAT
STAGING
_q-F4
See Notes 2, 4, 8, 10, and 11.
Fig. 14 -- Two-Speed Air Conditioner with
Variable-Speed (FK4D, FV4, 40FK) Fan Coil
MODEL 0300-C
THERMOSTAT
24 VAC HOT
24 VAC COMM
FAN
COOL/HEAT
STAGE 2
HEAT STAGE 3
RVS COOLING_
COOL!HEAT E_
STAGE 1
N/A []
OUTDOOR EE!]
SENSOR ql
CONNECTION LD
EASY SELECT
TERMINAL BOARD TWO-SPEED HEAT PUMP
mE_
-[]-.
-[]-
-[]
-E_
EP
_[]-
J1 JUMPER
J2 JUMPER
_-r-I
_-lWl
See Notes 7, 10 and 11.
Fig. 16 -- Two-Speed Heat Pump with
Variable-Speed (FK4D, FV4) Fan Coil
MODEL 0200-C EASY SELECT SINGLE-SPEED
THERMOSTAT TERMINAL BOARD HEAT PUMP
24 VAC HOT _ - -- -
24 VAC COMM [_ - -- -
FAN [_-- ----
COOL/HEAT _ ---
STAGE 1
HEAT STAGE 2 _ ----
N/A []
RVS COOLING _ ----
N/A []
OUTDOOR Fr _
oSE ES° o r
m
J1 JUMPER _--E_
-[]- ....... _q-E]
-[] -q-E]
-E_
J2 JUMPER
El- ....... _q-D
-E]- ......... -[]
[]
See Notes 7, 8, and 11.
Fig. 15 -- Single-Speed Heat Pump with
Variable-Speed (FK40, FV4, 40FK) Fan Coil
NOTES FOR FIG. 2-16
1. Furnace must control its own second-stage heat operation via
furnace control algorithm. Refer to indoor equipment Installa-
tion Instructions for proper setup.
2. See Option 5 information to convert HP and 2S thermostats to
AC thermostat operation.
3. As an option, lock the furnace into low-heat operation and let
O/W2/B control high-heat operation. Refer to indoor equipment
Installation Instructions for proper setup.
4. O/W2/B can control second-stage heat. Refer to indoor equip-
ment Installation Instructions for proper setup.
5. Refer to outdoor equipment Installation Instructions for latent kit
requirements (if any).
6. Terminals marked with * may not be present on equipment.
7. O/W2/B energizes reversing valve in cooling or heating. See
Option 10.
8. Refer to outdoor equipment Installation Instructions for proper
setup.
9. If system is wired per diagram, the ACRDJ (jumper) on furnace
control board should be removed to allow thermostat to control
outdoor unit staging.
10. Refer to fan coil Installation Instructions for proper wiring.
11. If batteries are installed, C (common wire) is not required
between indoor unit and thermostat.

OPERATIONAL INFORMATION
Five-Minute Compressor Time Guard -- This tim-
er prevents the compressor from starting unless it has been off
for at least 5 minutes. It can be defeated for 1 cycle by simulta-
neously pressing the FAN mode button and the INCREASE
TEMPERATURE button.
Fifteen-Minute Cycle Timer -- This timer prevents
the stall of a heating or cooling cycle until at least 15 minutes
aller the last st;ut of the salne cycle. Its fimction is to assure that
equipment is not cycled more than 4 times per hc This timer is
defeated for 1 cycle when the desired temperatme is manually
changed. It can also be defeated for 1 cycle by simultaneously
pressing the FAN mode button and file INCREASE TEMPER-
ATURE button.
Fifteen-Minute Staging Timer -- In multistage heat-
ing or cooling, this timer prevents any higher stage from
turning on until the preceding stage has been on for 15 minutes.
This timer is defeated if the temperature error is greater than
5° F (usually due to a lmge change in desiled temperature).
Three-Minute Minimum On Time -- In normal op-
eration, when a stage turns on, it will not turn off for a minimum
of 3 minutes.
Heat/Cool Set Points (Desired Tempera-
tures) -- A minimum diffelence of 2° F is required between
heating and cooling set points. This is done by allowing one
setting to "push" the other, to maintain this difference.
Auto Changeover -- When the autochangeover mode is
selected, a change from heat to cool (or vice versa) will not
occur until an opposite mode demand has existed for 20 min-
utes. If the set point is changed, the 20-minute requirement is
deleted. Auto mode may be disabled.
Emergency Heat Mode -- When thermostat is config-
ured as a heat pump and Emergency Heat mode is selected, all
Y signals are locked out and W becomes energized upon a call
for heat.
Heat On and Cool On Icons -- When a heating or
cooling demand exists, the HEAT ON or COOL ON icon will
either remain on or flash. If flashing, the equipment is tempo-
rarily prevented from turning on by one of the timel_ (see
above). While the icon remains on without flashing, the equip-
ment is on.
Power On Check -- When AC power is first applied, all
segments of file display are turned on for a few sec. Following
this, the temperature display indicates the model/configuration
via the following 2-digit code: AC -- 1-speed air conditioneL
HP -- l-speed heat pump, A2 -- 2-speed air conditioner,
H2-- 2-speed heat pump.
Error Codes
-- -- If the thermostat cannot properly read room temperature,
the display will indicate -- (2 dashes) and all outputs (except
the fan if on) will turn off. This is to plevent operation of the
equipment if the thermostat has failed.
E2 -- If the AC line voltage drops below a minimum (brown-
out) level, all outputs are turned off and file display indicates
E2. This condition will remain for 15 sec ;trier proper line volt-
age is restored. If the AC line voltage disappems completely,
the display will immediately go blank.
E3 -- If the thermostat cannot propedy read outdoor tempera-
ture, and it is needed for proper operation (heat pump system
and Option 8 is not set to OF), E3 will flash ;alternately with
room temperature. See Table 3 for error code descriptions.
Table 3 -- Thermostat Troubleshooting
SYMPTOM WHAT TO CHECK
Blank LCD Check for 24 vac between R and C at terminal connections or battery.
Temperature sensor reading out of range. Check sensor for damage. If recycling power
"--" (2 dashes) on temperature display does not clear display, thermostat should be replaced.
"E2" on temperature display Brownout condition or too low of voltage to thermostat. Double check wiring and check for
24 vac between R and C. E2 will clear 15 sec after proper voltage is restored.
"E3" on temperature display The outdoor temperature sensor is open, not connected, or shorted.
After the selected number of hour of blower operation "FILTER" will display on LCD. This
"SERVICE FILTER" on temperature display is to remind the home owner to "check" the filter. Press RESET FILTER button to clear
display and reset timer to 0.
Select COOL mode. Set desired temperature to 10° F below room temperature. Simulta-
neously press FAN and INCREASE TEMPERATURE buttons to defeat timers. Check for
Cooling will not come on COOL ON icon and 24 vac at Y (first-stage) terminal. If present, thermostat is okay and
_roblem is with equipment or wiring. If not present, replace thermostat.
Select HEAT mode. Set desired temperature to 10° F above room temperature. Simultaneously
3tess FAN and INCREASE TEMPERATURE buttons to defeat timers. Check for HEAT ON and
Heating will not come on 24 vac at Y (first-stage) terminal (with heat pump) or W/W1 (with air conditioner) terminal. If
_resent, thermostat is okay and problem is with equipment or wiring. If not present, replace
thermostat.
10

NON-PROGRAMMABLE THERMOSTAT CONFIGURATION RECORD
OWNER/OPERATOR:
HARDWARE CONFIGURATION
Seal hole in wall.
DATE:
THERMOSTAT MODEL NO:
I1. MODE SETTINGS
Mode (Off, Heat, Cool, Auto, Eheat)
Heating Set Point Value
Cooling Set Point Value
Fan (Auto or On)
III. CONFIGURATION OPTIONS
l
2
3
4
5
6
7
8
9
l0
ll-12
13
14
15
16-17
18
19
20
21
Anticipator (1-9: factory default = 3)
Clean Filter Timer (OF or 1-9: facto Udefault = 2)
Fahrenheit or Celsius (F or C: factory default = F)
Fan On with W/Wl output (OF or ON: factory default = OF)
HP (2-speed)/AC Configuration
Cooling Ix)ckout (OF or ON: factory default = OF)
Zoning Selection (OF or ON: factory default = OF)
Auxiliary Heat Lockout (OF or 5 to 55 F: factory default = OF)
N/A
O (Reversing Valve) (ON with Heat or Cool Selection; default = C) (present on Heat Pump models only).
N/A
Room Temperature Offset (-5 to +5: factory default = 0)
N/A
Enable Auto Mode (OF or ON: factory default = On)
N/A
Backlight Configuration: (ON = Continuous; OF = Backlight with Keypress; Default = OF)
Number of wires (2, 3, 4 or more); Default = 4 or more
N/A
Keypad lockout (OF or ON: Default = OF)
11

Manufacturer reserves the right to
discontinue, or change at any time,
specincatlons or designs without notice
and without Incurring obligations.
REPLACEMENT COMPONENTS DIVISION
©CARRIER CORPORATION 2004 9-04
PRINTED IN U.S.A.
LITERATURE NUMBER P274-7SI
REPLACES: 997-510011-19
CATALOG NUMBER 570-351