Non-Programmable Thermostats
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Installation, Start-Up, and Operating Instructions
NOTE: Read the entire instruction manual before starting the
installation.
This symbol → indicates a change since the last issue.
SAFETY CONSIDERATIONS
Read and follow manufacturer instructions carefully. Follow all
local electrical codes during installation. All wiring must conform
to local and national electrical codes. Improper wiring or installation may damage thermostat.
Recognize safety information. This is the safety-alert symbol
.
When you see this symbol on the equipment and in the instruction
manual, be alert to the potential for personal injury.
Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-alert symbol. DANGER identifies the most serious hazards which will result in severe
personal injury or death. WARNING signifies a hazard which
could result in personal injury or death. CAUTION is used to
identify unsafe practices which would result in minor personal
injury or product and property damage.
INTRODUCTION
Carrier thermostats are wall-mounted, low-voltage thermostats
which maintain room temperature by controlling the operation of
a heating and air conditioning system. Separate heating and
cooling setpoints, plus auto changeover provide maximum comfort
and flexibility. Batteries are not required; temperature and mode
settings are preserved with the power off.
INSTALLATION CONSIDERATIONS
Power
Note that all thermostat models require no batteries and are not
"power stealing". They do require 24vac (both R and C terminals)
to be connected for proper operation. Thermostat will not operate
without these 2 connections.
Models
There are 3 different models. The 9th and 10th letters of the part
number indicate the model. These 2 letters also appear on the
package and on the circuit board. Be sure to have the proper
thermostat for the intended application. Models are:
AC — 1-stage cool, 1-stage heat for AC systems only.
HP — 1-stage cool, 2-stage heat for either HP, or AC with 2-stage
heat.
2S — 2-stage cool, 2-stage heat for 2-speed AC systems, or
2-stage cool, 3-stage heat for 2-speed HP systems.
Use each only for its intended purpose. See Table 1.
A98422
HEIGHT (IN.)
3-1/2
WIDTH (IN.)
5-3/4
DEPTH (IN.)
1-3/8
Fig. 1—Carrier Non-Programmable Thermostat
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, fireplace, 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 and Jumper
AC Model (1-stage cool, 1-stage heat) is to be used for singlestage heating and/or cooling applications only. It CANNOT be
used with optional outdoor temperature sensor. (See Table 1 and
Fig. 2, 3, 4, 14, and 19.)
HP Model (1-stage cool, 2-stage heat) can be used with a
single-speed heat pump (HP), or an air conditioner (AC) with a
2-stage furnace or fan coil. A resistor (R19) serves as a HP/AC
selector jumper. This thermostat comes configured from the
factory as a heat pump thermostat. Leave R19 installed for HP
operation. Cut and discard for AC operation. 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 and Fig. 5, 6, 7, 15, 17, and 21.)
2S Model is for 2-speed compressor HP and AC systems only.
Output Y1 controls compressor low speed and output Y/Y2
controls compressor high speed. Jumper resistor R19 serves as
HP/AC selector exactly as described above for HP model. (See
Table 1 and Fig. 8 through 13, 16, and 18.)
INSTALLATION
Step 1—Thermostat Location
Thermostat should be mounted:
•
•
•
Approximately 5 ft (1.5m) from floor.
Close to or in a frequently used room, preferably on an inside
partitioning wall.
On a section of wall without pipes or duct work.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
PC 101
Catalog No. 03TS-TA5
Printed in U.S.A.
Form TSTAT-16SI
Pg 1
10-98
Replaces: TSTAT-14SI
Tab misc. misc.
Table 1—Model Selection and Wiring Diagram Chart
AIR CONDITIONER
OUTDOOR UNIT
1-Stage
Furnace
HEAT PUMP
1 Speed
2 Speed
1 Speed
2 Speed
Model AC
See Fig. 2
Model 2S
See Fig. 8
Requires
Dual Fuel Thermostat
Model 2S
See Fig. 11
2-Stage
Furnace
Model AC
See Fig. 3
Model HP
See Fig. 5
Model 2S
See Fig. 9
Requires
Dual Fuel Thermostat
Model 2S
See Fig. 12
Typical Fan Coil
Model AC
See Fig. 4
Model HP
See Fig. 6
Model 2S
See Fig. 10
Model HP
See Fig. 7
Model 2S
See Fig. 13
Variable-Speed
Fan Coil
(FK4C, FV4A, 40FKA)
Model AC
See Fig. 14
Model HP
See Fig. 15
Model 2S
See Fig. 16
Model HP
See Fig. 17
Model 2S
See Fig. 18
Step 3—Install Thermostat
12. Turn ON power to unit.
power up, LCD readout will display AC, HP, A2, or H2
depending on the thermostat model and jumper status. See "Power
On Check" under "Operational Information" on page 11 for
explanation.
→ Step 4—Set Thermostat Configuration
Configuration options, like the R19 configuration jumper are
intended to be selected at installation and are normally not
modified by the homeowner. These options are not discussed in the
Homeowner’s Guide and therefore must be made as part of the
installation. A special procedure allows entry into the configuration mode. The thermostat will automatically exit this mode if no
button is pressed for 3 minutes. While in the configuration mode,
up to 8 option choices can be made:
Option 01:"Anticipator" adjustment
Option 02: Clean filter timer adjustment
Option 03: Fahrenheit or Celsius operation
Option 04: Enable fan (G) on with any heat (W)
Option 07: Enable zoning
Option 08: Auxiliary heat lockout temperature adjustment
Option 13: Room temperature offset adjustment
Option 15: Enable AUTO mode
An explanation for each of these and how to enter the configuration mode follows.
To enter the configuration mode:
Press and hold the FAN button for approximately 10 sec until
room temperature disappears and display reads "01". You are now
in the configuration mode.
NOTE: If the FAN button is pressed again or if no button is
pressed for 3 min, the thermostat will exit the configuration mode
and return to normal operation. To re-enter the configuration
mode, the FAN button must be pressed and held for 10 sec again.
While in configuration mode:
The display is used to show both the option number and the
selection choice within that option.
OPTION 1—ANTICIPATOR ADJUSTMENT
This adjustment controls the sensitivity and cycle rate of the
thermostat. Higher numbers decrease the sensitivity and slow the
cycle rate. Lower numbers increase sensitivity and increase cycle
rate. However, a limiting feature will not allow more than 4
equipment cycles per hr, regardless of setting. Values can range
from 1 to 9. Factory default setting is 3. This default selection will
provide optimum performance in nearly all installations. Try it
first. Do not change setting unless there is evidence of need to do
so.
Unlike conventional anticipators, this setting is not to be determined by current draw. There is no need to measure, know, or
→ On
Before installing thermostat, turn off all power to unit. There
may be more than 1 power disconnect. Electrical shock can
cause personal injury or death.
1. Turn OFF all power to unit.
2. If an existing thermostat is being replaced:
a. Remove existing thermostat from wall.
b. Disconnect wires from existing thermostat, 1 at a time. Be
careful not to allow wires to fall back into the wall.
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 disposed of
properly.
3. Open thermostat rear door (mounting base) to expose mounting holes. The base can be removed to simplify mounting.
Snap apart carefully at hinge to separate mounting base from
remainder of thermostat.
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 3/16-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 1/4 in. of
extra wire. Strip only 1/4 in. of insulation from each wire to
prevent adjacent wires from shorting together when connected.
8. Match and connect equipment wires to proper terminals of the
connector blocks. (See Table 1 and Fig. 2 through 24.) Both R
and C must be connected for proper thermostat operation.
Improper wiring or installation may damage the thermostat.
Check to make sure wiring is correct before proceeding with
installation or turning on unit.
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 hinge back together.
11. Close thermostat assembly making sure pins on back of circuit
board align with sockets in connector.
2
compensate for current. There is also no droop with this thermostat, regardless of anticipator setting. This adjustment controls only
sensitivity and cycle rate up to the maximum of 4 cycles per hr.
Some auxiliary heaters require a separate G signal to turn on the
blower. In this case, select ON. Factory default is OFF.
TO SELECT:
TO ADJUST:
1. Enter configuration mode (if not already there).
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 04. This selects Option 4.
The SET icon should be off.
2. Use up and down buttons to display 01. This selects Option 1.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 4 setting.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 1 setting.
4. Use up and down buttons to move between available Option 4
choices of ON or OF. Factory default is OF.
4. Use up and down buttons to move between the available
Option 1 values of 01 to 09. Factory default is 03.
5. Press MODE button again to return to Option 4 indication of
04. The SET icon will now be off.
5. Press MODE button again to return to Option 1 indication of
01. 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.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 7—ZONING ON/OFF SELECTION
This selection enables or defeats the 15 minute cycle timer, the 15
minute staging timer, and the 5 minute compressor timeguard. (See
"Operational Information" on page 11 for details.) These timers
MUST be enabled (zoning OFF) for normal operation and disabled
(zoning ON) for zoning applications. In zoning applications, the
zone control center performs these timing functions. Factory
default is OF.
OPTION 2—CLEAN FILTER TIMER
This option selects the number of hours of blower operation
(heating, cooling, or fan) before FILTER icon is displayed. With
OF selected, the icon will never come on, disabling this feature.
Time selection can be from 400 to 3600 hours by selecting
numbers 01 through 09. (Time is 400 X number selected.) Factory
default is 2 (800 hours). Recommended selections are: disposable
filter 800 hr, media filter 1200 to 1600 hr, or electronic air cleaner
1600 to 2400 hr of blower operation.
TO SELECT:
1. Enter configuration mode (if not already there).
TO ADJUST:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 07. This selects Option 4.
The SET icon should be off.
2. Use up and down buttons to display 02. This selects Option 2.
The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 7 setting.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 2 setting.
4. Use up and down buttons to move between available Option 7
choices of ON or OF.
4. Use up and down buttons to move between the available
Option 2 values of OF and 01 through 09. Factory default is
02.
5. Press MODE button again to return to Option 7 indication of
07. 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.
5. Press MODE button again to return to Option 2 indication of
02. The SET icon will now be off.
OPTION 8—HIGH AMBIENT AUXILIARY HEAT LOCKOUT
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
Present in HP and 2S models only when configured 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 temperature. Temperatures of 5° to
55°F (or equivalent values in C) can be selected. Feature can be
disabled by selecting OFF. Emergency heat (EHEAT mode)
always overrides this feature.
OPTION 3—FAHRENHEIT/CELSIUS SELECTION
This option selects Fahrenheit or Celsius operation.
TO SELECT:
1. Enter configuration mode (if not already there).
TO SELECT or ADJUST:
2. Use up and down buttons to display 03. This selects Option 3.
The SET icon should be off.
1. Enter configuration mode (if not already there).
3. Press MODE button once. The SET icon will come on. The
display now shows Option 3 setting.
2. Use up and down buttons to display 08. This selects Option 8.
The SET icon should be off.
4. Use up and down buttons to move between the available
Option 3 choices of F (Fahrenheit) or C (Celsius). Factory
default is F.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 8 setting.
4. Use up and down buttons to move between available Option 8
choices of OF, or 5 through 55 in 5° steps.
5. Press MODE button again to return to Option 3 indication of
03. The SET icon will now be off.
5. Press MODE button again to return to Option 8 indication of
08. 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.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 4—G (FAN) ON WITH ANY W (HEAT)
OPTION 13—ROOM TEMPERATURE OFFSET
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
furnaces and fan coils manage their own blowers and do not
require a separate G signal. For these applications, select OFF.
This option allows calibration (or deliberate miscalibration) of
room temperature sensor. There are various reasons why the
homeowner may want to have displayed temperature adjusted to a
3
higher or lower value. The selected number is the number of
degrees, plus or minus, which will be added to the actual
temperature. The number can range between -5 and +5. Factory
default is 0. This adjusted value will be used as actual temperature
for both display and control action. For example, if 2 is selected,
72°F actual will read 74°F. 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. The effect is that a positive number selection will
make the room temperature lower and vice versa. This thermostat
is factory calibrated within an accurancy of plus or minus 1°F, so
this adjustment will provide the best accuracy when set to 0.
2. Press FAN button again, stopping fan operation. FAN icon
turns off. (Some fan coils have 90 sec fan off delay, so fan
may not stop immediately.)
HEATING OPERATION
1. Press and release MODE button until HEAT icon appears.
This selects heating mode.
2. Press and release up button until set point is at least 5° above
room temperature. Within a few seconds, HEAT ON icon will
either stay on or flash. Flashing indicates a heat demand exists,
but the cycle timer or timeguard timer is delaying heat turn on.
(See "Operational Information" on page 11 for timer explanation.) To defeat timer, simultaneously press FAN and up
buttons. Heating will come on within a few seconds and
HEAT ON icon will stay on. Lowering set point to below
room temperature will turn off heating and remove HEAT ON
icon within a few seconds.
TO SELECT:
1. Enter configuration mode (if not already there).
2. Use up and down buttons to display 13. This selects Option
13. The SET icon should be off.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 13 setting.
COOLING OPERATION
4. Use up and down buttons to move between available Option
14 choices of -5 through +5 in 1° steps.
1. Press and release MODE button until COOL icon appears.
This selects cooling mode.
5. Press MODE button again to return to Option 13 indication of
13. The SET icon will now be off.
2. Press and release down button until set point is at least 5°
below room temperature. Within a few seconds, COOL ON
icon will either stay on or flash. Flashing indicates a cooling
demand exists, but cycle timer or timeguard timer is delaying
cooling turn on. (See "Operational Information" on page 11
for timer explanation.) To defeat timer, simultaneously press
FAN and up buttons. Cooling will come on within a few
seconds and COOL ON icon will stay on. Raising set point to
above room temperature will turn off cooling and remove
COOL ON icon within a few seconds.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
OPTION 15—AUTO MODE ON/OFF SELECTION
This options allows the installer to enable or disable AUTO mode
(automatic changeover between heat and cool). When disabled,
AUTO icon does not appear when successive presses of MODE
button are used to move between OFF, HEAT, and EHEAT (in
heat pump systems). Factory default is ON (AUTO mode enabled).
TO SELECT:
1. Enter configuration mode (if not already there).
OUTDOOR TEMPERATURE
2. Use up and down buttons to display 15. This selects Option
15. The SET icon should be off.
If system is equipped with an outdoor temperature sensor, check its
operation by pressing the up and down buttons together. Outdoor
temperature will be displayed for about 5 sec. If "--" is displayed,
the outdoor temperature sensor is absent or not properly connected.
3. Press MODE button once. The SET icon will come on. The
display now shows Option 15 setting.
Step 6—Checklist
4. Use up and down buttons to move between available Option
15 choices of ON or OF.
1. Run equipment through several heating and cooling cycles to
ensure proper operation.
5. Press MODE button again to return to Option 15 indication of
15. The SET icon will now be off.
2. If equipment is to be left in operation, set point and operating
mode must be properly selected.
6. Use up and down buttons to select another Option, or press
FAN button to exit configuration mode.
3. Put away tools and instruments, and clean up debris.
Step 5—Check Thermostat Operation
4. Review Homeowner’s Guide with owner.
FAN OPERATION
5. Leave literature packet with owner.
1. Press FAN button, starting fan operation. FAN icon turns on.
4
→ Table 2—Non-Programmable Thermostat Quick Reference
TSTAT Model
Outdoor Unit
R-19 Jumper
AC01-B
HP01-B
HP01-B
2S01-B
2S01-B
AC
HP
AC
2-Speed AC
2-Speed HP
N/A
Uncut
Cut
Cut
Uncut
24v
Hot
R
R
R
R
R
Common
Fan
C
C
C
C
C
G
G
G
G
G
Heat
Stage 1
W/W1
Y/Y2
W/W1
W/W1
Y1
THERMOSTAT OUTPUT
Heat
Heat
Cool
Stage 2 Stage 3 Stage 1
N/A
N/A
Y/Y2
W/W1
N/A
Y/Y2
O/W2
N/A
Y/Y2
O/W2
N/A
Y1
Y/Y2
W/W1
Y1
Cool
Stage 2
N/A
N/A
N/A
Y/Y2
Y/Y2
Reversing Valve
N/A
O/W2
N/A
N/A
O/W2
Model Numbers: TSTATCCNAC01-B, TSTATCCNHP01-B, TSTATCCN2S01-B
Note: AC = Air Conditioner, HP = Heat Pump, 2S = 2-Speed, N/A = Not Applicable
MODEL AC
THERMOSTAT
TWO-STAGE OR
VARIABLE-SPEED
FURNACE
24 VAC HOT
R
R
24 VAC COMM
C
C
HEAT STAGE 1 W/W1
W/W1
COOL STAGE 1 Y/Y2
Y/Y2
FAN
G
SINGLE-SPEED
AIR CONDITIONER
C
Y
G
W2
HUM
MODEL AC
THERMOSTAT
SINGLE-STAGE
FURNACE
24 VAC HOT
R
R
24 VAC COMM
C
C
HEAT STAGE 1 W/W1
W
COOL STAGE 1 Y/Y2
Y
FAN
G
SINGLE-SPEED
AIR CONDITIONER
A98452
→ Fig. 3—Single-Speed Air Conditioner
with 2-Stage or Variable-Speed Furnace
C
MODEL HP
THERMOSTAT
TYPICAL
FAN COIL
24 VAC HOT
R
R
24 VAC COMM
C
C
G
G
FAN
COOL STAGE 1 Y/Y2
HEAT STAGE 1 W/W1
R
R
24 VAC COMM
C
C
G
Fig. 2—Single-Speed Air Conditioner
with Single-Stage Furnace
Y
W/W1
COOL STAGE 1 Y/Y2
Y/Y2
G
SINGLE-SPEED
AIR CONDITIONER
C
Y
G
SINGLE-SPEED
AIR CONDITIONER
HEAT STAGE 2 O/W2
Y
W2
N/A
Y1
N/A
B
OUTDOOR
S1
W2
HUM
See notes 2 and 3
SENSOR
CONNECTION
W3
E
HEAT STAGE 1 W/W1
FAN
C
*
TWO-STAGE OR
VARIABLE-SPEED
FURNACE
24 VAC HOT
Y
A97237
MODEL AC
THERMOSTAT
See note 1
S2
See notes 6 and 11
A98453
A98454
→ Fig 4—Single-Speed Air Conditioner
with Typical Fan Coil
→ Fig. 5—Single-Speed Air Conditioner
with 2-Stage or Variable-Speed Furnace
5
MODEL HP
THERMOSTAT
TYPICAL
FAN COIL
24 VAC HOT
R
R
24 VAC COMM
C
C
HEAT STAGE 1 W/W1
COOL STAGE 1 Y/Y2
FAN
G
SINGLE-SPEED
AIR CONDITIONER
MODEL HP
THERMOSTAT
C
W2
Y
*
Y
G
TYPICAL
FAN COIL
SINGLE-SPEED
HEAT PUMP
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
FAN
G
G
COOL/ HEAT
STAGE 1
Y/Y2
Y
HEAT STAGE 2 W/W1
*
Y
W2
W2
W3
HEAT STAGE 2 O/W2
N/A
Y1
N/A
B
OUTDOOR
S1
CONNECTION
E
Y1
N/A
B
OUTDOOR
S1
See notes 6, 7, and 11
A98456
A98455
→ Fig. 7—Single-Speed Heat Pump
with Typical Fan Coil
→ Fig. 6—Single-Speed Air Conditioner
with Typical Fan Coil
SINGLE-STAGE
FURNACE
O
S2
CONNECTION
S2
MODEL 2S
THERMOSTAT
N/A
SENSOR
See notes 2, 4, 6, and 11
SENSOR
E
RVS COOLING O/W2
W3
TWO-SPEED
AIR CONDITIONER
MODEL 2S
THERMOSTAT
TWO-STAGE OR
VARIABLE-SPEED
FURNACE
TWO-SPEED
AIR CONDITIONER
24 VAC HOT
R
R
R
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
24 VAC COMM
C
C
C
HEAT STAGE 1 W/W1
W
COOL STAGE 2 Y/Y2
Y
FAN
G
N/A
O/W2
COOL STAGE 1
Y1
N/A
OUTDOOR
Y2
G
W/W1
COOL STAGE 2 Y/Y2
Y/Y2
FAN
G
W2
COOL STAGE 1
Y1
Y1
B
N/A
B
HUM
S1
OUTDOOR
S1
Y1
Y2
G
HEAT STAGE 2 O/W2
SENSOR
CONNECTION
HEAT STAGE 1 W/W1
*
Y1
SENSOR
S2
See notes 2, 5, and 8
CONNECTION
S2
See notes 2, 3, 6, and 8
A98457
A98458
→ Fig. 8—Two-Speed Air Conditioner
with Single-Stage Furnace
→ Fig. 9—Two-Speed Air Conditioner
with 2-Stage or Variable-Speed Furnace
6
MODEL 2S
THERMOSTAT
TYPICAL
FAN COIL
TWO-SPEED
AIR CONDITIONER
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
HEAT STAGE 1 W/W1
W2
COOL STAGE 2 Y/Y2
Y
FAN
G
MODEL 2S
THERMOSTAT
TWO-SPEED
HEAT PUMP
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
W
W2
Y2
HEAT STAGE 3 W/W1
*
SINGLE-STAGE
FURNACE
Y2
G
COOL/HEAT
STAGE 2
Y/Y2
Y
FAN
G
G
W3
HEAT STAGE 2 O/W2
W3
RVS COOLING O/W2
COOL STAGE 1
Y1
N/A
B
OUTDOOR
S1
Y1
SENSOR
CONNECTION
S2
→ Fig. 10—Two-Speed Air Conditioner
with Typical Fan Coil
N/A
B
OUTDOOR
S1
R
R
R
24 VAC COMM
C
C
C
W/W1
W2
COOL/HEAT
STAGE 2
Y/Y2
Y/Y2
Y2
FAN
G
G
W3
See note 5, 7, 8, and 10
S2
A98460
MODEL 2S
THERMOSTAT
O
*
O
*
Y1
COOL/HEAT
STAGE 1
Y1
Y1
N/A
B
HUM
OUTDOOR
S1
SENSOR
CONNECTION
S2
TYPICAL
FAN COIL
TWO-SPEED
HEAT PUMP
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
FAN
G
G
COOL/HEAT
STAGE 2
Y/Y2
Y
HEAT STAGE 3 W/W1
W2
RVS COOLING O/W2
Y1
→ Fig. 11—Two-Speed Heat Pump
with Single-Stage Furnace
TWO-SPEED
HEAT PUMP
24 VAC HOT
HEAT STAGE 3 W/W1
Y1
CONNECTION
A98459
TWO-STAGE OR
VARIABLE-SPEED
FURNACE
COOL/HEAT
STAGE 1
SENSOR
See notes 2, 4, 5, 6, 8, and 11
MODEL 2S
THERMOSTAT
O
E
RVS COOLING O/W2
*
Y2
W2
W2
W3
W3
E
O
COOL/HEAT
STAGE 1
Y1
N/A
B
OUTDOOR
S1
Y1
SENSOR
See notes 1, 6, 7, 8, and 10
CONNECTION
S2
See notes 5, 6, 7, 8, 10, and 11
A98461
A98462
→ Fig. 12—Two-Speed Heat Pump
with 2-Stage or Variable-Speed Furnace
→ Fig. 13—Two-Speed Heat Pump
with Typical Fan Coil
7
EASY SELECT
TERMINAL BOARD
MODEL HP
THERMOSTAT
SINGLE-SPEED
AIR CONDITIONER
DH
J1 JUMPER
24 VAC HOT
MODEL AC
THERMOSTAT
EASY SELECT
TERMINAL BOARD
SINGLE-SPEED
AIR CONDITIONER
HEAT STAGE 1 W/W1
24 VAC COMM
DH
24 VAC HOT
R
HEAT STAGE 1 W/W1
R
R
W1
C
C
Y/Y2
Y
C
J1 JUMPER
COOL STAGE 1 Y/Y2
R
FAN
W1
G
G
REMOVE
J2 JUMPER
FOR HEAT
STAGING
J2 JUMPER
W2
COOL STAGE 1 Y/Y2
Y/Y2
HEAT STAGE 2 O/W2
Y
W2
N/A
Y1
Y1
N/A
B
O
Y1
OUTDOOR
S1
O
CONNECTION
FAN
G
G
24 VAC COMM
C
C
C
See notes 2, 4, and 11
SENSOR
See note 11
S2
A98464
→ Fig. 15—Single-Speed Air Conditioner with
Variable-Speed (FK4C, FV4A, 40FKA) Fan Coil
A98463
→ Fig. 14—Single-Speed Air Conditioner with
Variable-Speed (FK4C, FV4A, 40FKA) Fan Coil
MODEL 2S
THERMOSTAT
EASY SELECT
TERMINAL BOARD
DH
MODEL HP
THERMOSTAT
TWO-SPEED
AIR CONDITIONER
EASY SELECT
TERMINAL BOARD
SINGLE-SPEED
HEAT PUMP
DH
J1 JUMPER
J1 JUMPER
24 VOLT HOT
R
R
R
24 VAC HOT
R
R
R
24 VOLT COMM
C
C
C
24 VAC COMM
C
C
C
FAN
G
G
FAN
G
G
COOL/HEAT
STAGE 1
Y/Y2
Y/Y2
COOL STAGE 2 Y/Y2
Y/Y2
HEAT STAGE 1 W/W1
W1
Y2
HEAT STAGE 2 W/W1
W1
J2 JUMPER
REMOVE
J2 JUMPER
FOR HEAT
STAGING
N/A
HEAT STAGE 2 O/W2
W2
COOL STAGE 1
Y1
Y1
Y1
N/A
B
O
L
OUTDOOR
S1
Y1
RVS COOLING O/W2
N/A
B
OUTDOOR
S1
SENSOR
SENSOR
CONNECTION
CONNECTION
S2
Y
W2
W2
O
O
Y1
See notes 7, 8, and 11
S2
See notes 2, 4, 8, and 11
A98465
A98466
→ Fig. 16—Two-Speed Air Conditioner with VariableSpeed (FK4C, FV4A, 40FKA) Fan Coil
→ Fig. 17—Single-Speed Heat Pump with
Variable-Speed (FK4C, FV4A, 40FKA) Fan Coil
8
MODEL 2S
THERMOSTAT
TWO-SPEED
HEAT PUMP
EASY SELECT
TERMINAL BOARD
DH
J1 JUMPER
24 VAC HOT
R
R
R
24 VAC COMM
C
C
C
FAN
G
G
COOL/HEAT
STAGE 2
Y/Y2
Y/Y2
HEAT STAGE 3 W/W1
COOL/HEAT
STAGE 1
Y1
N/A
B
OUTDOOR
S1
S2
W2
W2
O
O
Y1
Y1
C
FAN
G
WHT
COOL STAGE 1 Y/Y2
YEL
G
SPLICE
BOX
24 VAC HOT
R
24 VAC COMM
C
SPLICE
BOX
RED
BRN
HEAT STAGE 1 W/W1
COOL STAGE 1 Y/Y2
HEATER
CONTROL BOX
FAN
G
A98469
HEAT STAGE 2 O/W2
BRN
N/A
Y1
N/A
B
OUTDOOR
S1
HEATER
CONTROL BOX
RED
BRN
WHT
YEL
GRN
RED(TRAN)
RED
BRN
GRN
→ Fig. 19—Single-Speed Packaged Air Conditioner
with Single-Stage Gas Furnace (48SS, SX)
See notes 5, 7, 8, 10, and 11
HEAT STAGE 1 W/W1
COOL STAGE 1 Y/Y2
BRN
HEAT STAGE 1 W/W1
MODEL HP
THERMOSTAT
MODEL AC
THERMOSTAT
24 VAC COMM
C
RED
See note 8
→ Fig. 18—Two-Speed Heat Pump with
Variable-Speed (FK4C, FV4A, 40FKA) Fan Coil
R
24 VAC COMM
FAN
A98467
24 VAC HOT
R
W1
SENSOR
CONNECTION
24 VAC HOT
Y2
J2 JUMPER
RVS COOLING O/W2
SPLICE
BOX
MODEL AC
THERMOSTAT
PNK
VIO
WHT
YEL
GRN
SENSOR
CONNECTION
See notes 2, 8, 9, and 12
S2
See notes 8 and 12
A98470
A98471
→ Fig. 20—Single-Speed Packaged Air Conditioner
with Single-Speed Electric Heat (50SS, SX, ZP)
→ Fig. 21—Single-Speed Packaged Air Conditioner
with 2-Stage Electric Heat (50SS, SX, ZP)
9
SPLICE
BOX
MODEL HP
THERMOSTAT
24 VAC HOT
24 VAC HOT
BRN
C
HEAT STAGE 2 W/W1
COOL/HEAT
STAGE 1
FAN
G
R
BRN
24 VAC COMM
WHT
HEAT STAGE 2 W/W1
C
YEL
COOL/HEAT
STAGE 1
Y/Y2
GRN
FAN
G
Y/Y2
SPLICE
BOX
MODEL HP
THERMOSTAT
RED
R
24 VAC COMM
HEATER
CONTROL BOX
RED
BRN
ORN
RVS COOLING O/W2
N/A
Y1
N/A
Y1
N/A
B
N/A
B
OUTDOOR
S1
OUTDOOR
S1
SENSOR
RED
BRN
WHT
VIO
YEL
RED(TRAN)
RVS COOLING O/W2
HEATER
CONTROL BOX
PNK
ORN
SENSOR
CONNECTION
See notes 8, and 12
S2
CONNECTION
S2
See notes 8, 9, and 12
A98472
A98473
→ Fig. 22—Single-Speed Packaged Heat Pump with
Single-Stage Electric Heat (50HS, HX, ZH)
→ Fig. 23—Single-speed Packaged Heat Pump with
2-Stage Electric Heat (50HS, HX, ZH)
24 VAC HOT
R
24 VAC COMM
C
HEAT STAGE 2 W/W1
COOL/HEAT
STAGE 1
Y/Y2
FAN
G
→ WIRING DIAGRAM NOTES:
SPLICE
BOX
MODEL HP
THERMOSTAT
1. Furnace must control its own second-stage heat operation via
furnace control algorithm. Refer to indoor equipment Installation Instructions for proper setup.
RED
BRN
2. Cut jumper R19 to convert thermostat to air conditioning
operation.
WHT
3. As an option, lock the furnace into low-fire operation and let
O/W2 control high-fire operation. Refer to indoor equipment
Installation Instructions for proper setup.
YEL
GRN
4. O/W2 can control second-stage heat. Refer to indoor equipment Installation Instructions for proper setup.
RVS COOLING O/W2
N/A
Y1
N/A
B
OUTDOOR
S1
ORN
5. Refer to outdoor equipment Installation Instructions for latent
kit requirements.
6. Terminals marked with * may not be present on equipment.
7. O/W2 energizes reversing valve in cooling.
8. Refer to outdoor equipment Installation Instructions for proper
setup.
SENSOR
CONNECTION
S2
See notes 8, and 12
9. Omit red and pink wires from diagram when wiring a 50ZP,
ZH with 2-stage heaters.
A98474
10. Select the "ZONE" position on the 2-speed heat pump control
board.
→ Fig. 24—Single-Speed Packaged Heat Pump
with Single-Stage Gas Furnace (48HX)
11. Refer to fan coil Installation Instructions for proper wiring.
12. Program thermostat to bring on G (fan) with any W (heat)
selection. See section under "Set Thermostat Configuration."
10
→ OPERATIONAL INFORMATION
Five-minute Compressor Timeguard
This timer prevents the compressor from starting unless it has been off for at least 5 minutes. It can be defeated for 1 cycle by simultaneously
pressing the FAN mode button and the INCREASE TEMPERATURE button.
Fifteen-minute Cycle Timer
This timer prevents the start of a heating or cooling cycle until at least 15 minutes after the last start of the same cycle. Its function is to assure
that equipment is not cycled more than 4 times per hr. This timer is defeated for 1 cycle when the desired temperature is manually changed.
It can also be defeated for 1 cycle by simultaneously pressing the FAN mode button and the INCREASE TEMPERATURE button.
Fifteen-minute Staging Timer
In multistage heating 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 large change in desired temperature).
Three-minute Minimum On Time
In normal operation, when a stage turns on, it will not turn off for a minimum of 3 minutes.
Heat/Cool Set Points (Desired Temperatures)
A minimum difference of 2°F is enforced 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 auto changeover mode is selected, a change from heat to cool (or vice versa) will not occur until an opposite mode demand has existed
for 20 minutes. If the set point is changed, the 20 minute requirement is deleted. Auto mode may be disabled.
Emergency Heat Mode
When thermostat is configured 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
temporarily prevented from turning on by one of the timers (see above). While the icon remains on without flashing, the equipment is on.
Power On Check
When AC power is first applied, all segments of the 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 conditioner, HP—1-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 prevent operation of the equipment if the thermostat has failed.
E2 — If the AC line voltage drops below a minimum (brownout) level, all outputs are turned off and the display indicates E2. This condition
will remain for 15 sec after proper line voltage is restored. If the AC line voltage disappears completely, the display will immediately go blank.
E3 — If the thermostat cannot properly read outdoor temperature, 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.
→ Thermostat Troubleshooting
SYMPTOM
WHAT TO CHECK
Blank LCD
Check for 24vac between R and C at terminal connections. Both R and C must be connected for proper operation.
"--" (2 dashes) on temperature display
Temperatrue sensor reading out of range. Check sensor for damage. If recycling power
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
24vac 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.
"FILTER" on temperature display
After the selected number of hour of blower operation "FILTER" will display on LCD. This
is to remind the homeowner to "check" the filter. Press RESET FILTER button to clear
display and reset timer to 0.
Cooling will not come on
Select COOL mode. Set desired temperature to 10°F below room temperature. Simultaneously press FAN and INCREASE TEMPERATURE buttons to defeat timers. Check for
COOL ON icon and 24vac at Y (first-stage) terminal. If present, thermostat is OK and
problem is with equipment or wiring. If not present, replace thermostat.
Heating will not come on
Select HEAT mode. Set desired temperature to 10°F above room temperature. Simultaneously press FAN and INCREASE TEMPERATURE buttons to defeat timers. Check for
HEAT ON and 24vac at Y (first-stage) terminal (with heat pump) or W/W1 (with air conditioner) terminal. If present, thermostat is OK and problem is with equipment or wiring. If
not present, replace thermostat.
11
NON-PRO G RAM M ABL E T HE RMOS TAT CONFIGURATION RE CORD
Date
Owner/Operator
Thermostat Model No.
A) Hardware Configuration
R19 Resistor located on Model HP and 2S only. (Uncut = Enable Heat Pump Operation,
Cut = Air Conditioner Operation)
No R19 Resistor present. (Model AC thermostat only)
B) Mode Settings
Mode (Off, Heat, Cool, Auto, Eheat)
Heating Set Point Value
Cooling Set Point Value
Fan (Auto or On)
C) Configuration Options
1
Anticipator (1-9: factory default = 3)
2
Clean Filter Timer (Off or 1-9: factory default = 2)
3
Fahrenheit or Celsius (F or C: factory default = F)
4
Fan On with W (Off or On: factory default = Off)
5-6
N/A
7
Zoning Selection (Off or On: factory default = Off)
8
Auxiliary Heat Lockout (Off or 5-55 F: factory default = Off)
9-12
N/A
13
Room Temperature Offset (-5 to +5: factory default = 0)
14
N/A
15
Enable Auto Mode (Off or On: factory default = On)
A98468
Copyright 1998 CARRIER Corp. • 7310 W. Morris St. • Indianapolis, IN 46231
tstat16si
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Book 1
4
PC 101
Catalog No. 03TS-TA5
Printed in U.S.A.
Form TSTAT-16SI
Pg 12
10-98
Replaces: TSTAT-14SI
Tab misc. misc.