Carrier P374-1500 User manual

OWNER'S MANUAL
P/N P374-1500
Configurable for
Advanced Heat Pump or
Dual Fuel Operation
Programmable Thermostat
Can be configured for Dual Fuel operation (Heat Pump & Furnace).
7 Day Programmable
4 Time periods
Thermoglow Backlight
Advanced Heat Pump
Dual Fuel Configurable
Using Outdoor Sensor
Adjustable Times and
Deadbands Between
Stages
Adjustable Changeover
Balance Point
Replacement Component Division Carrier Corporation 6/99
HEAT
PUMP
DUAL
FUEL
3 HEAT - 2 COOL
*
*
TOTALINE
67
70
HEAT
COOL
AUTO
o
o
Am
6:03
68
Su

Table Of Contents
FRONT PANEL
DISPLAY
QUICK START Set the clock and go
BASIC OPERATION
PROGRAMMING 4 Time Periods
ADVANCED SETUP
ABOUT ADVANCED OPERATION
WARRANTY
Page 1
CAUTION
Follow Installation Instructions before proceeding.
SET THERMOSTAT TO MODE “OFF” PRIOR TO
CHANGING SETTINGS IN SETUP OR RESTORING
FACTORY DEFAULTS.
2
3
5
6
8
12
17
24
P/N P374-1500
Replacement Components Division Carrier Corporation 6/99

67
70
HEAT
COOL
AUTO
o
o
Am
6:03
68
Su
Front Panel
Page 2
Backlit LCD Display
Warmer or + Button
Cooler or - Button
Mode Button
Heat or Cool Indicator
Red = Heat, Green = Cool
67
70
HEAT
COOL
AUTO
o
o
Am
6:03
68
S
SET CLOCK
PROGRAMVACATIONOUTSIDEFAN MODE
Programmable
Thermostat
FAN PROGRAMVACATION SET CLOCKOUTSIDE

1
2
4
3
Mode Indicators
Selects the operation mode of the equipment.
HEAT - indicates the heat mode.
COOL - indicates the air conditioning mode.
AUTO - indicates the system will automatically
changeover between heat and cool modes
as the temperature varies.
OFF - indicates the entire system is turned off.
PROGRAM ON - indicates the stored program
is enabled to run. Page 8.
Clock with Day of the Week
Indicates the current time and day. This clock is
also used to program the timer periods. Page 5.
Room Temperature Display
Indicates the current room temperature.
Desired Set Temperature
Indicates desired room temperature(s). Page 7.
Display
Page 3
1
1
1
1
2
3
4
4
7
6
8
10
11
12
9
88
88
HEAT
COOL
OFF
AUTO
Fan On
Program
ServiceFilter
Locked
unoccupied
Setup
On
Start
o
o
Am
Pm
12:0 0
88
SMTWTFS
:
5
Outside
Day
Night
Evening
Morning

5
6
7
8
9
10
11
12
Outside Indication
Indicates the temperature displayed is from
the optional outside sensor. Page 21.
Morning, Day, Evening & Night Indication
Indicates the program time period. Page 8-11.
Setup Indication
Indicates the thermostat is in the programming
mode. Page 12.
Fan Operation Indication
Fan On - indicates constant, continuous fan
operation.
When Fan On is not lit - indicates the fan will
only operate when necessary to heat or
to cool. Page 7.
Service Filter Indication
Service Filter indicates when the filter should
be serviced under normal conditions.
Appears after 0 - 1950 hours of blower
operation (adjustable). Page 15.
Locked Indication
Locked appears after the right combination of
buttons are pressed, rendering the buttons
inoperative. Page 22.
Start Indication
Start appears when programming
timer functions. Page 8.
Unoccupied indication
Unoccupied appears when in the
Vacation mode. Page 23.
Display
Page 4

During Setup & Programming:
.
(Represented in dark black)
Pressing the Up and Down
buttons will modify the flashing
selection.
Press the SET CLOCK
button.
Press the SET CLOCK
button as above to
return to normal
operation.
Quick Start Set the Clock and Go
Page 5
This thermostat is preprogrammed from the
factory to operate 1, 2 or 3 Stage equipment without
the need for further programming. To optimize the
installation of this thermostat follow the instructions
in the Advanced Setup section.
2
Setup
S
buttons.
To adjust the
clock or Day use
Press
Setup
Am
12:00 i
:
SET CLOCK
SET CLOCK
MODE

The HEAT setting indicates the
temperature the room has to
reach before the furnace will
turn on to heat the room.
The COOL setting indicates the
temperature the room has to
reach before the air conditioner
will turn on to cool the room.
OFF indicates both heating
and air conditioning
systems are turned off.
AUTO will automatically select
heat or cool based on room
temperature demand.
Program On will activate the
stored timer operation.
(Morning, Day, Evening
& Night Periods)
Select Mode
Basic Operation
Page 6
69
HEAT
o
Pm
12:00
70
M
:
72
COOL
o
Pm
12:00
70
M
:
69
72
HEAT
COOL
AUTO
o
o
Pm
12:00
70
M
:
OFF
Pm
12:00
70
M
:
70
73
HEAT
COOL
ProgramOn
o
o
Pm
12:00
70
Day
M
:
Press
MODE
Press
MODE
Press
MODE
Press
MODE

buttons.
In any mode, adjust the
desired Set Temperature
with
Pressing the up/down buttons in Auto mode will adjust both the heat and cool
set temperatures simultaneously.
Pressing the up/down buttons in Heat or Cool modes will adjust only the
heat or cool set temperature.
Select Desired Temperature
Fan
Operation
Page 7
Basic Operation
69
72
HEAT
COOL
AUTO
o
o
Pm
12:00
70
M
:
Fan On indicates constant fan operation.
This feature is active even if the thermostat
is set to Off.
55
85
HEAT
COOL
o
o
Pm
12:00
65
S
:
Fan On
Press
FAN

Programming 4 Time Periods
Page 8
Press the PROGRAM button to enter time period programming.
Continued
Select the day of week
Adjust the start time
for Morning.
Adjust the heating
setpoint for Morning.
Adjust the cooling
setpoint for Morning.
(M - S)
(35 - 99 )
(35 - 99 )
M
Start
Am
7 30
Morning
M
:
74
COOL
o
Am
7 30
Morning
M
:
72
74
HEAT
COOL
o
o
Am
7 30
Morning
M
:
Use the back cover Programming Worksheet to help with this section.
Press
PROGRAM
Press
MODE
Press
MODE
Press
MODE
Press
MODE

Programming 4 Time Periods
Page 9 Continued
Adjust the start time
for Evening.
Adjust the cooling
setpoint for Evening.
Adjust the start time
for Day.
Adjust the heating
setpoint for Day.
Adjust the cooling
setpoint for Day.
(35 - 99 )
(35 - 99 )
(35 - 99 )
Start
Am
I0 30
Day
M
:
Start
Pm
5 30
Evening
M
:
Day
75
COOL
o
Am
I0 30
M
:
Evening
75
COOL
o
Pm
5 30
M
:
Day
73
75
HEAT
COOL
o
o
Am
I0 30
M
:
Press
MODE
Press
MODE
Press
MODE
Press
MODE
Press
MODE