INSTALLATION &
OPERATION GUIDE
1F92W-51
Multi-stage/Heat Pump Electronic
Digital Thermostat
WHITE-RODGERS
Operator: Save this booklet for future use!
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In This Guide . . .
YOUR NEW THERMOSTAT’S
OPERATING YOUR THERMOSTAT ............... 22
PARTS OF THE THERMOSTAT
The Back Of the Thermostat Body
The Display
FEATURES .................................................. 4
PRECAUTIONS ................................................. 5
THE THERMOSTAT’S SPECIFICATIONS ....... 6
INSTALLING YOUR THERMOSTAT ................ 7
NEW INSTALLATION
The Thermostat Buttons
OPERATING FEATURES
Select Thermostat Location
PROGRAMMING YOUR
Route Wires to Location
REPLACEMENT INSTALLATION
Remove Old Thermostat
THERMOSTAT........................................... 34
PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM
Set Current Time and Day
Attach Subbase to Wall
SYSTEM CONFIGURATON
Enter Heating Program
Set Option Switches
Enter Cooling Program
CHECK THERMOSTAT OPERATION
Fan Operation
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS ........................ 44
Heating System Operation
Cooling System Operation
LOCKOUT BYPASS OPTION
Compressor Long Term Cycle Protection
Compressor Short Term Cycle Protection
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3
YOUR NEW THERMOSTAT’S FEATURES
• Five-day/two-day programming capability
• Adjustable cycle times
• Simultaneous heat and cool program storage
• 9 volt Energizer® alkaline battery backup
• Compressor long term cycle protection
• Compressor short cycle protection
• Blower delay in the cooling cycle
• Preprogrammed temperature control
• Visual prompting during operation
• Programmable blower control
• Temperature range 40° to 99°F
• °F/°C convertibility
• Four separate time and temperature settings
per 24-hour period
• Up to 2 stages of heat and up to 1 stage of cool
• Computed Energy Management Recovery
(EMR)
• Automatic changeover (operator selectable)
• Two hour temperature override
• Manual program override (HOLD temperature)
• “Advance Program” button
• Electric Heat (installer-selectable)
• Armchair programming capability
• LCD displays continuous setpoint, time, and
room temperature
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4
PRECAUTIONS
If in doubt about whether your wiring is millivolt, line,
WARNING
!
or low voltage, have it inspected by a qualified
heating and air conditioning contractor, electrician,
or someone familiar with basic electricity and wiring.
Do not use on circuits exceeding specified
voltage. Higher voltage will damage control
and could cause shock or fire hazard.
Do not exceed the specification ratings.
Do not short out terminals on gas valve or
primary control to test. Short or incorrect
wiring will burn out thermostat and could
cause personal injury and/or property
damage.
All wiring must conform to local and national electri-
cal codes and ordinances.
This control is a precision instrument, and should be
handledcarefully.Roughhandlingordistortingcom-
ponents could cause the control to malfunction.
CAUTION
!
To prevent electrical shock and/or equip-
ment damage, disconnect electric power to
system, at main fuse or circuit breaker box,
until installation is complete.
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5
THE THERMOSTAT’S SPECIFICATIONS
THIS CONTROL IS DESIGNED FOR USE WHERE BOTH SIDES OF THE TRANSFORMER ARE
PRESENT AT THE THERMOSTAT (both the hot and common sides of the 24 VAC end of the
transformer.)
ELECTRICAL DATA
Electrical Rating:
THERMAL DATA
Setpoint Temperature Range:
40°F to 99°F (4°C to 37°C)
Operating Ambient Temperature Range:
32°F to 105°F
Operating Humidity Range:
0 to 90% RH (non-condensing)
Shipping Temperature Range:
-40°F to 150°F
20 to 30 VAC 50/60 Hz.
0.01 to 1.5 Amps (Load per terminal)
2.5 Amps Maximum Total Load (All terminals
combined)
Anticipation:
Heating 4 to 40
Cooling 4 to 40
Auxiliary 4 to 40
ACCESSORIES
STAGING DATA
Thermostat Guard:
Up to 3 heating stages
Up to 1 cooling stage
W. R. Part No. F29-0198 (clear)
or F29-0238 (opaque)
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6
INSTALLING YOUR THERMOSTAT
4. Avoid locations close to windows, adjoining out-
NEW INSTALLATION
side walls, or doors that lead outside.
WE RECOMMEND THAT YOU PROGRAM THE
THERMOSTAT WITH BATTERY INSTALLED BE-
FORE ATTACHING ON SUBBASE. SEE OPERA-
TION SECTION FOR PROGRAMMING INSTRUC-
TIONS.
5. Avoid locations close to air registers or in the
direct path of air from them.
6. Make sure there are no pipes or duct work in that
part of the wall chosen for the thermostat loca-
tion.
SELECT THERMOSTAT LOCATION
7. Never locate thermostat in a room that normally
warmer or cooler than the rest of the building.
Proper location insures that the thermostat will
provide a comfortable building temperature. Ob-
serve the following general rules when selecting
a location:
8. Avoid locations with poor air circulation, such as
behind doors or in alcoves.
ROUTE WIRES TO LOCATION
1. Locate thermostat about 5 ft. above the floor.
2. Installthermostatonapartitioningwall, notonan
outside wall.
NOTE
All wiring must conform with local and national
electrical codes and ordinances.
3. Never expose thermostat to direct light from
lamps, sun, fireplacesoranytemperatureradiat-
ing equipment.
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7
1. Probe for obstructions in partition before drilling
1
⁄ ” hole for
2
1
⁄2” hole in wall at selected location. Take up
thermostat wire
quarter round and drill a small guide hole for
sighting(seefig. 1). Frombasement, drill3⁄4”hole
in partition floor next to guide hole. In buildings
without basements, drill 1⁄2” hole through ceiling
and into partition from above (see fig. 1).
Stout cord with 6”
chain attached
Approximately
5 feet from floor
Baseboard
strip moulding
1
⁄ ” guide hole
4
for sighting
Quarter round
removed
2. Through this hole drop a light chain, or 6” chain
attachedtoastrongcord.Snagcordinbasement
with hooked wire. In buildings without base-
ments, drop cord through hole in ceiling and
down partitioning; snag cord at the thermostat
location.
3
⁄ ” hole in floor of partition
4
Hooked wire for snagging chain
3. Attach thermostat wires to cord and pull wires
through hole in wall so that 6” of wire comes out
of the wall.
Figure 1. Routing thermostat wires
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8
REPLACEMENT INSTALLATION
REMOVE OLD THERMOSTAT
TABLE 1. WIRE IDENTIFICATION LABELS
1. Shutoffelectricityatthemainfuseboxuntil
installation is complete. Verify power is off
with a voltmeter.
1
G
2
3
L
4
R
5
O
6
B
7
E1
8
E2
C
2. Remove the front cover of the old thermo-
stat. With wires still attached, remove
wall plate from the wall.
G
1
C
2
L
3
R
4
O
5
B
6
E1
7
E2
8
11
W1
9
Y1
10
Y2
12
W2
13
W3
14
S1
15
S2
16
S3
3. If the old thermostat has a wall mounting
plate, remove the thermostat and the wall
mounting plate as an assembly.
W1
11
Y1
9
Y2
10
W2
12
W3
13
S1
14
S2
15
S3
16
4. Use the Cross Reference Guide to find the
thermostat type you are replacing.
6. Disconnect the wires from old thermostat one at
a time. Pull at least 6 inches of wire out of the
wall. DO NOT LET WIRES FALL BACK INTO
THE WALL.
5. Identify each wire attached to the old thermo-
stat using the labels enclosed with the new
thermostat (see Table 1). Record the identifi-
cationofthewireonthecorrespondingblank
in Table 2.
7. Install new thermostat using the following proce-
dures.
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9
TABLE 2. TERMINAL REFERENCE
FUNCTION
NEW THERMOSTAT
TERMINAL
OLD THERMOSTAT
TERMINAL
LABEL
NUMBER
DESIGNATION
DESIGNATION
(1)
(2)
(3)
(4)
(5)
(6)
(7)
G
C
L
R
O
B
Fan Output
Transformer 24 VAC Common
(this terminal not used)
Transformer 24 VAC Hot
Changeover Output (Cooling)
Changeover Output (Heating)
Emergency Heat Relay (cycles on
1st stage in Emergency Mode)
Emergency Heat Relay (continually
energized in Emergency Mode)
Stage 1 Cool
E1
(8)
E2
(9)
Y1
Y2
W1
W2
W3
(10)
(11)
(12)
(13)
(this terminal not used)
Stage 1 Heat (Compressor)
Stage 2 Heat (Auxiliary)
(this terminal not used)
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10
ATTACH SUBBASE TO WALL
then tighten screws. (Leveling is for appearance
only and will not affect thermostat operation.) If
you are using existing mounting holes, or if holes
drilled are too large and do not allow you to
tighten subbase snugly, use plastic expansion
plugs to secure subbase.
1. Remove the packing material from the thermo-
stat. Place the fingers of one hand on the center
top and bottom portion of the thermostat. Grasp
the subbase in the other hand on the top and
bottom center, and gently pull straight out (see
fig. 2). The thermostat has pin and socket con-
nectors. Forcing or prying on the thermostat will
cause damage to the unit.
6. Push excess wire into wall and plug hole with a
fire-resistant material (such as fiberglass insula-
tion) to prevent drafts from affecting thermostat
operation.
2. Connect wires beneath terminal screws on sub-
base using wiring schematic for your particular
application (see figs. 3 through 6).
(Instructions continue on page 16).
3. Place subbase over hole in wall and mark
mounting hole locations on wall using subbase
as a template.
4. Move subbase out of the way. Drill mounting
holes.
5. Fasten subbase loosely to wall, as shown in fig.
3, using two mounting screws. Place a level
againstbottomofsubbase, adjustuntillevel, and
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11
WARNING
CAUTION
!
!
DO NOT EXCEED MAXIMUM VOLTAGE OR
CURRENT RATINGS. FIRE, PERSONAL IN-
JURY, AND/OR EQUIPMENT DAMAGE
COULD RESULT.
To prevent electrical shock and/or equip-
ment damage, disconnect electrical power
at the main fuse box until installation is
complete. Verify power is off with a volt-
meter.
Expansion
plugs
Connect wires under
terminal screws
S3
S1 S2
Mounting
hole
O
B
Y1
Y2
C
W1
E1
E2
L
R
W2
W3
4-pin connector
Mounting
hole
G
9-pin connector
Pull wires through
this opening
Figure 3. Subbase
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12
NOTE
The following wiring diagrams show typical terminal iden-
tification and wiring. For proper installation, refer to the
original manufacturers' instructions.
Thermostat
Control
Circuit
THERMOSTAT
SYSTEM
B
E1
W2
C
R
O
Y1
G
E2
W1
Emergency
Relay
Switched
Output
Changeover
Energized
In Heat
Heat
Relay
Fan
Relay
Stage 2
Hot
24 VAC
120 VAC
Emergency
Relay
Constant
Output
Heat
Relay
Changeover
Energized
In Cool
Compressor
Contactor
Stage 1
Neutral
TRANSFORMER
Stage 1
Figure 4. Typical wiring diagram for single transformer systems
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13
NOTE
IF SAFETY CIRCUITS ARE IN ONLY ONE OF THE
SYSTEMS, REMOVE THE TRANSFORMER OF THE
SYSTEM WITH NO SAFETY CIRCUITS.
Thermostat
Control
Circuit
THERMOSTAT
SYSTEM
B
C
O
Y1
G
E1
E2
W2
W1
R
CUT AND
TAPE OFF!
Emergency
Relay
Switched
Output
Changeover
Energized
In Heat
Heat
Relay
Limit or
Safety
Fan
Hot
Relay
Stage 2
Switches
120 VAC
24 VAC
Limit or
Safety
TRANSFORMER
Emergency
Relay
Constant
Output
Changeover Compressor
Heat
Relay
Neutral
TRANSFORMER
Hot
Energized
In Cool
Contactor
Stage 1
Switches
Stage 1
120 VAC
24 VAC
Neutral
HEAT PUMP SYSTEM
AUXILIARY HEATING SYSTEM
DEPENDING ON SYSTEM REQUIRE-
MENTS, REPLACE WITH A
75VA TRANSFORMER, IF NEEDED
TWO COMMONS MUST
BE JUMPERED TOGETHER!
Figure 5. Typical wiring diagram for two transformer systems with NO safety circuits
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14
CAUTION
NOTE
!
Relay contacts shown are thermostatically operated. The
accessory relay scheme is required when safety circuits
exist in both systems.
Polarity must be observed. If the HOT
side of the second transformer is
jumpered to the COMMON side of the
first transformer a short will be made.
Damage to equipment will occur when
power is restored.
Thermostat
Control
Circuit
THERMOSTAT
SYSTEM
B
C
O
Y1
G
E1
E2
W2
W1
R
Emergency
Relay
Switched
Output
Changeover
Energized
In Heat
Limit or
Safety
Limit or
Safety
Heat
Fan
Relay
Hot
Relay
Switches
Switches
Stage 2
24 VAC
120 VAC
Neutral
Emergency
Relay
Constant
Output
Changeover Compressor
Heat
Relay
24 VAC
Energized
In Cool
Contactor
Stage 1
Accessory
Relay N.O.
Contact
AUXILIARY
HEATING
Stage 1
TRANSFORMER
HEAT PUMP SYSTEM
AUXILIARY
HEATING SYSTEM
HEAT PUMP
Limit or
Safety
Limit or
Safety
TRANSFORMER
Hot
TWO COMMONS MUST
BE JUMPERED TOGETHER!
Switches
Switches
24 VAC
120 VAC
Neutral
Figure 6. Typical wiring diagram for two transformer systems with safety circuits in BOTH systems
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15
ATTACH THERMOSTAT TO SUBBASE
snaps lock into place (see fig. 7). Be gentle when
attaching thermostat. If the thermostat does not
seem to be attaching to the subbase easily, make
sure that the connector pins and plastic snaps are
properlyaligned, andthatexcesswireispushedinto
the wall. Damage to the thermostat may occur if
force is used.
WE RECOMMEND THAT YOU SET OPTION
SWITCHESTODESIREDPOSITIONBEFOREAT-
TACHING ON SUBBASE (see OPERATION). WE
ALSORECOMMEND THATYOUPROGRAMTHE
THERMOSTAT WITH BATTERY INSTALLED BE-
FORE ATTACHING ON SUBBASE (see OPERA-
TION section for programming instructions).
SYSTEM
HEAT-OFF-COOL-AUTO
USE
TO TURN THERMOSTAT OFF BE-
FOREATTACHINGTOWALL.FAILURETOTURN
OFF THERMOSTAT BEFORE ATTACHING TO
WALL MAY CAUSE EQUIPMENT DAMAGE DUE
TO RAPID COMPRESSOR CYCLING.
To attach thermostat to subbase, line up the plastic
snap guides at the top of the thermostat and the 4
connector pins on the thermostat with the connec-
tors near the top right section of the subbase (when
viewed from the front). Gently pivot the thermostat
down until the 9-pin connectors and the plastic
ENGAGE TWO UPPER GUIDES; PIVOT DOWN
Figure 7. Attaching thermostat to subbase
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16
SET OPTION SWITCHES
SYSTEM CONFIGURATION
1. Single Stage Compressor Heat Pump — with
reversing valve energized through B or O termi-
nals
NOTE
ANY TIME AN OPTION SWITCH IS CHANGED,
THE 9 VOLT ENERGIZER® BATTERY MUST BE
REMOVED FOR A MINIMUM OF 2 MINUTES.
W1
Y1
Field jumper W1 & Y1
Battery
4-pin connector
ON
Switch #1 OFF
Switch #2 OFF
Switch #3 OFF
Switch #4 (see step 6)
1
2
3
4
2. Two Compressor (Split) System
W1
Y1
Field jumper W1 & Y1
ON
Switch #1 OFF
Switch #2 ON
W18
Switch #3 OFF
Switch #4 (see step 6)
1
2
3
4
Option switches
9-pin connector
Figure 8. Back of thermostat
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3. Multi-stage (Fossil Fuel) System — up to 2 5. Automatic Changeover from Heat to Cool
heat stages and 1 cool stage
ON
Switch #1 (see steps 1-4)
ON
Switch #1 ON
Switch #2 (see steps 1-4)
Switch #3 (see step 5)
Switch #4 ON
Switch #2 OFF
Switch #3 OFF
Switch #4 (see step 6)
1
2
3
4
1
2
3
4
NOTE
4. Multi-stage (Electric Heat) System — up to 2
heat stages and 1 cool stage
The battery maintains the stored program in the
event of a power failure. When attached to the wall
with 24 VAC power applied, the thermostat will
function normally without the battery. However, the
programwillbelostintheeventofpowerinterruption
or failure if the battery is not installed. When power
is restored, the thermostat will automatically main-
tain a temperature of 64°F or a cooling temperature
of 82°F (factory preprogrammed) as needed.
ON
Switch #1 ON
Switch #2 ON
Switch #3 (see step 5)
Switch #4 (see step 6)
1
2
3
4
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18
HEATING SYSTEM OPERATION
CHECK THERMOSTAT OPERATION
When checking thermostat, option switch #4 for
automatic changeover must be in the OFF position.
This will allow temporary setting of heat set points
above cool settings. After system checkout, reset
optionswitchtoONpositionifautomaticchangeover
is desired (see SET OPTION SWITCHES).
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
untilHEATisdisplayed.(Itshould
already be displayed.)
2. Press
to adjust thermostat to 99°F. All
stages of the heating system should come on
within approximately five minutes. However, if
the PUMP LED is flashing, the compressor lock-
out feature is operating (see Lockout Bypass
Option to temporarily override the compressor
lockout feature during testing).
FAN OPERATION
1. Turn on power to the system. If the auxiliary heat
source has a standing pilot, be sure to light it.
FAN
2. Press
until FAN
is displayed. The
ON
–
AUTO
SYSTEM
HEAT-OFF-COOL-AUTO
3. Press
until EMER is displayed. Repeat
NOTE
step 2.
4. To program the thermostat, see PROGRAM-
MING YOUR THERMOSTAT.
blower should begin to operate.
FAN
3. Press
until FAN
is displayed. The
ON
–
AUTO
blower should stop operating within approxi-
mately one minute.
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19
COOLING SYSTEM OPERATION
CAUTION
pass Option to temporarily override the com-
pressor lockout feature during testing).
!
3. To program the thermostat, see PROGRAM-
MING YOUR THERMOSTAT.
To prevent compressor and/or property
damage, if power to the compressor has
been off or interrupted for more than 1
hour and the outdoor temperature is be-
low 50°F, DO NOT operate the system for
at least the amount of time the compres-
sor was off! This will allow the compres-
sor heaters to warm the compressor oils
to avoid damage due to slugging.
Afterheatingandcoolingsystemhavebeenchecked
and are running properly, determine if automatic
changeover is desired. When option switch #4 is in
the proper position, automatic changeover is en-
SYSTEM
HEAT-OFF-COOL-AUTO
abled by pressing
until AUTO is displayed
(seeSETOPTIONSWITCHES).IntheAUTOmode,
the setpoint temperature is not displayed.
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until COOL is displayed.
2. Press
to adjust thermostat to 40°F. The
cooling system should come on within approxi-
mately five minutes. However, if the fan is run-
ning but the compressor is not, the compressor
lockout feature is operating (see Lockout By-
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20
than the power loss to the unit (up to 12 hours
maximum lockout). During this time, auxiliary heat
will be used when necessary to maintain setpoint
temperature. DO NOT attempt to override this delay
feature before crankcase temperature has stabi-
lized (for example, if power has been out for three
hours, the compressor should remain locked out for
two hours).
LOCKOUT BYPASS OPTION
CAUTION
!
FOR QUALIFIED SERVICE TECHNICIANS’
USEONLY.OPERATORSSHOULDNOTUSE
THIS FEATURE DUE TO POSSIBILITY OF
EQUIPMENT OR PROPERTY DAMAGE, OR
PERSONAL INJURY.
COMPRESSOR SHORT TERM CYCLE
PROTECTION
DO NOT USE THE LOCKOUT BYPASS OP-
TION UNLESS THE COMPRESSOR OIL
HEATERSHAVEBEENOPERATIONALFOR
6HOURSANDTHESYSTEMHASNOTBEEN
OPERATIONAL FOR AT LEAST 5 MINUTES.
This thermostat has a built-in short term (5-minute)
time delay. During this 5-minute period, the thermo-
stat will lock out the compressor to allow head
pressure to stabilize. If you want to override this
feature while testing thermostat operation, simply
COMPRESSOR LONG TERM CYCLE
PROTECTION
ADV
HOLD
TEMP
press
and
at the same time at initial
PRGM
startup.
To protect the compressor from potential damage
due to temperature change of crankcase oil, this
thermostat has a built-in time delay of one hour less
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21
OPERATING YOUR THERMOSTAT
Before you begin programming your new thermo- The subbase is attached to the wall, but you can
stat, you should be familiar with its features and with remove the thermostat body for easy programming.
the display and the location and operation of the To remove the thermostat body from the subbase,
thermostat buttons. The information in this section grasp the thermostat body and gently pull it straight
willhelpyoubecomefamiliarwithyourthermostatso out from the subbase (see fig. 9). To attach the
that you can easily program it.
thermostatbody, lineupthefourterminalpinsonthe
uppersectionofthethermostatbackwiththematch-
ing connector on the subbase. Insert these, then
gentlypivotthethermostatbodydowntoconnectthe
Your thermostat consists of two parts: the thermo-
stat body and the subbase.
CAUTION
!
SYSTEM
HEAT-OFF-COOL-AUTO
Use
to turn the thermostat OFF
before removing or attaching the thermo-
stat body. Equipment damage and/or per-
sonal injury could occur.
PULL STRAIGHT OUT
Figure 9. Removing thermostat from subbase
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22
nine pin connectors on the lower portion of the
thermostat back. Gently push until the snap connec-
tors engage (see fig. 10). DO NOT FORCE OR PRY
THE THERMOSTAT, as this may damage the unit.
PARTS OF THE THERMOSTAT
The Back of the Thermostat Body
Turn the thermostat body over. On the back are the
9 volt Energizer® alkaline battery and the option
switches.
1. The 9 volt Energizer® alkaline battery provides
power to the thermostat when the 24 VAC power
isinterrupted(forexample,whenyouremovethe
thermostat from the wall for programming). A
fresh battery will maintain the stored program for
approximately one week. If power loss is long
enoughfortheprogramtobelost, thethermostat
will automatically maintain a factory prepro-
grammed heating temperature of 64°F and a
cooling temperature of 82°F after power is re-
stored. You must re-program the thermostat if
this happens.
ENGAGE TWO UPPER GUIDES; PIVOT DOWN
Figure 10. Attaching thermostat to subbase
If the word BAT is flashing in the display window,
the battery is low and should be replaced with a
fresh 9 volt Energizer® alkaline battery. The
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23
battery will provide power for all functions. If the Following are brief descriptions of the display and
word BAT is displayed continuously (non-flash- the thermostat buttons.
ing), the thermostat is not being supplied with 24
VAC power and is being powered by the battery
alone.
The Display
1
2
Continuously displays system mode (HEAT,
EMER, OFF, COOL, AUTO, HOLD). During
programming, the program period is displayed
(MOR, DAY, EVE, NHT).
CAUTION
!
SYSTEM
HEAT-OFF-COOL-AUTO
Use
to turn thermostat OFF before
Alternately displays room temperature (F de-
removing thermostat from the wall to re-
place the battery.
notes degrees Fahrenheit and C denotes de-
grees Celsius) and time of day (A denotes AM
time and P denotes PM time).
2. You may adjust option switch #4 for automatic
changeover from heating to cooling (see OPER-
ATING FEATURES).
3
4
Displays the setpoint temperature.
5 DAY indicates that the displayed program is
the weekday program. 2 DAY indicates that the
displayed program is the weekend program.
Other than
and
, the buttons are located
behind the thermostat door. To open the door, use
your fingernail in the indentation at the top center of
thedoor. Pullthedoorout, thenswingthedoordown
on its hinges.
The word BAT flashes on the display when the
9 volt alkaline battery is weak and should be
5
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24
replaced. The word BAT will be displayed con-
tinuously (non-flashing) when the thermostat is
operating on battery power only.
FAN
is displayed when the blower is operat-
ing continuously, regardless of heating or cool-
ing system cycling. FAN is displayed during
6
automaticfanoperation(whentheblowercycles
with the heating or cooling system).
EMER.
5
DAY
FAN
AUX.
TIME
FWD
SET
VIEW
HOLD
SYSTEM
HEAT-OFF-COOL-AUTO
CLOCK
PRGM
TEMP
TIME
SET
DAY
RUN
ADV
FAN
ON - AUTO
BACK
PRGM
PRGM
1
2
3
3
2
DAY
FAN
5
DAY
BAT
FAN
6
4
4
5
2
6
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25
The Thermostat Buttons and Lights
Used to initiate or review thermostat program-
ming.
12
7
8
Sets the system mode (HEATing, EMERgency
backup, OFF, COOLing, or AUTOmatic
changeover [user selectable feature]).
13 Used to start program operation after program-
ming. Also used to return thermostat to program
operation after being in HOLD mode.
Selects fan operation (see #6, previous page).
Thisbuttonisalsousedtoprogramthefantorun
continuously during a program period.
Used to manually override programming to hold
14
15
at a selected temperature (when HOLD is dis-
played).
9
Runs display forward or backward through time,
day, or anticipation settings during program-
ming.
Usedtoadvancethermostatprogramtothenext
program period (for example, from the MOR
program to the DAY program).
TIME
FWD
TIME
10
11
Used with
and
to set current time
BACK
(Blue arrow) Lowers temperature setting (40°F
or 4°C minimum).
16
17
and day of the week.
Used during programming to set the day of the
(Red arrow) Raises temperature setting (99°F
or 37°C maximum)
SET
week. Also used with
tion setting mode.
to enter anticipa-
CLOCK
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26
setpoint temperature — there is a 5 to 10
minute startup delay on the first emergency
cycle). AUX light indicates that the auxiliary
system is operating.
18 EMER light indicates that the system is in the
emergency mode (the heat pump compressor
is off and the auxiliary system is maintaining
16 17
18
EMER.
5 DAY
FAN
AUX.
TIME
FWD
SET
VIEW
HOLD
SYSTEM
HEAT-OFF-COOL-AUTO
7
8
CLOCK
PRGM
TEMP
TIME
SET
DAY
RUN
ADV
FAN
ON - AUTO
BACK
PRGM
PRGM
9
10 11 12 13 14 15
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27
system at about 5:00 AM, so that the pro-
grammed70°Ftemperatureisreachedbyabout
6:00 AM.
OPERATING FEATURES
Now that you are familiar with the thermostat display
and buttons, read the following information to learn
about the many features of the thermostat.
• AUTOMATIC CHANGEOVER — You can set
the thermostat to automatically switch the sys-
tem from heating to cooling as needed. First,
you must move option switch #4 (located on the
backofthethermostatbody)totheON position,
if it has not already been done. To do this, press
• COMPUTED ENERGY MANAGEMENT RE-
COVERY (EMR) - The thermostat’s microcom-
puter automatically calculates the time it will
take to change the temperature to the next
program setting. Then the thermostat will acti-
vate the heating or cooling system to change
the temperature so that the desired tempera-
ture is reached at the beginning of the next
program period. As an example of this feature,
assume that you have programmed your ther-
mostat to provide an overnight heating tem-
perature of 62°F, and that during the next pro-
gram period, beginning at 6:00 AM, you have
programmed a temperature of 70°F. The ther-
mostat will automatically activate the heating
SYSTEM
HEAT-OFF-COOL-AUTO
untilthermostatisOFF.Then,remove
the thermostat body from the wall. Check the
position of switch #4 (the last switch on the
right). If it is ON (up), simply put the thermostat
back on the wall and restore 24 VAC power. If
the switch is OFF (down), use a pencil or small
screwdriver to move the switch to the ON posi-
tion(seefigureatright). Leavethebatteryoutof
thethermostatforatleasttwominutes,toallow
the thermostat to reset itself. DO NOT MOVE
ANY OTHER OPTION SWITCH, as it may
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28
affect thermostat operation. Replace the bat-
tery, re-program the thermostat if necessary,
put the thermostat back on the wall, and use
AUTOMATIC CHANGEOVER (ON)
ON
SYSTEM
HEAT-OFF-COOL-AUTO
to set thermostat for desired opera-
1
2
3
4
tion. To set the thermostat for automatic
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 set at installation (DO NOT CHANGE)
Switch #4 ON
SYSTEM
HEAT-OFF-COOL-AUTO
changeoverafterprogramming,press
to set the thermostat to AUTO (the setpoint
display is blank in the AUTO mode). The sys-
temwillnowautomaticallyswitchbetweenheat-
ing and cooling depending on the actual room
temperature.
NOTE
In the AUTO mode, the thermostat will not allow the
temperature separation between the highest heat
settingandthelowestcoolsettingtobelessthat1°F.
For example, if the highest heat setting is 76°F, the
lowest cool setting cannot be below 77°F (see
diagram at left).
79
COOLING TEMPERATURES
DEAD BAND 1°F
78
77
76
75
74
73
HEATING TEMPERATURES
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29
If the automatic changeover feature is enabled,
AUTOMATIC CHANGEOVER (OFF)
SYSTEM
and you wish to disable it, press
until
HEAT-OFF-COOL-AUTO
ON
thermostat is OFF. Then, remove the thermo-
stat body from the wall. Move the switch to the
ON position (see figure at right). Leave the
battery out of the thermostat for at least two
minutes, to allow the thermostat to reset itself.
DO NOT MOVE ANY OTHER OPTION
SWITCH, as it may affect thermostat operation.
Replace the battery, re-program the thermostat
if necessary, put the thermostat back on the
1
2
3
4
Switch #1 set at installation (DO NOT CHANGE)
Switch #2 set at installation (DO NOT CHANGE)
Switch #3 set at installation (DO NOT CHANGE)
Switch #4 OFF
• TWO HOUR TEMPERATURE OVERRIDE —
Press
or
until the display shows the
SYSTEM
wall, and use
desired.
to set the thermostat as
HEAT-OFF-COOL-AUTO
temperatureyouwant.Thethermostatwillover-
ride current programming and keep the room
temperatureattheselectedtemperaturefortwo
hours. After two hours, the thermostat will auto-
matically revert to the program.
• HOLDTEMPERATURE—Thethermostatcan
hold any temperature within its range for an
indefinite period, without reverting to the pro-
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30
cycles), you may want to adjust the anticipation
setting.
HOLD
TEMP
gram. Press
. HOLD will be displayed.
Then choose the desired hold temperature by
pressing or . The thermostat will
CAUTION
!
hold the room temperature at the selected set-
An anticipation setting of less than 10 may
cause decreased compressor life.
HOLD
ting until you press
to start program op-
TEMP
SET
eration again. This feature is ideal for energy
conservation when the building is unoccupied
for an extended period of time.
To adjust HEAT anticipation, press
and
CLOCK
SET
at the same time. The display will show
DAY
HEAT 18. You may select any anticipation
setting from 4 to 40 (note that for add-on heat
pump systems, a minimum anticipation of
10 is recommended). When you adjust antici-
pation,increaseordecreasethedisplayednum-
ber by only one or two digits, then let the system
run for a while to see if the adjustment is
sufficient. If the heat cycles are too short, press
TIME
• °F/°C CONVERTIBILITY — Press
and
FWD
TIME
at the same time until the temperature
BACK
display is in °C (Celsius). To display °F, repeat
the process.
• ADJUSTABLE HEATING AND COOLING
CYCLETIMES(ANTICIPATION)—Iftheheat-
ing/cooling system is turning on and off too
often (short cycles) or not often enough (long
TIME
to increase the cycle time. If the heat
FWD
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31
continuously (non-flashing), 24 VAC power is
not being supplied and the thermostat is work-
ing on battery power only.
TIME
cycles are too long, press
to decrease
BACK
the cycle time. To set COOL anticipation, press
SET
SET
DAY
•
COMPRESSOR SHORT CYCLE PROTEC-
TION — To protect your compressor from poten-
tial damage due to rapid cycling, this thermostat
has a built-in delay of 5 minutes between cooling
cycles. The following may cause a time delay in
COOL or HEAT:
and
at the same time again. The
CLOCK
display will show COOL 14 (factory
preprogrammed cooling anticipation). Use
TIME
FWD
TIME
and
to adjust anticipation. To set
BACK
AUXILIARY heat anticipation (not applicable to
a) Return of power after a momentary power
outage.
SET
SET
DAY
multi-stage use), press
and
at the
CLOCK
same time again. The display will show AUX 8
(factory preprogrammed auxiliary anticipation).
SYSTEM
HEAT-OFF-COOL-AUTO
b) Pressing
modes.
to change operating
TIME
FWD
TIME
Use
and
to adjust anticipation.
BACK
c) Pressing
or
to create a call for
RUN
PRGM
Press
to return to your program.
COOL or HEAT too soon after a previous
call.
•
LOW BATTERY INDICATOR — The word BAT
will flash on the display if the battery is low and
should be replaced. When BAT is displayed
During lockout in the COOL mode, the blower
will operate, but compressor operation will be
delayed.
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32
Auxiliary heat is functional during the compres-
sor lockout and can be used as needed to
maintain room temperature.
• SYSTEM INDICATOR LIGHTS — The lights
ontheupperrightpartofthethermostatindicate
system operation (see PARTS OF THE THER-
MOSTAT for specific descriptions of what each
light indicates).
• COMPRESSOR LONG TERM CYCLE PRO-
TECTION — If your system begins to operate
too soon after an extended power outage, the
compressormaybedamagedduetocrankcase
oil temperature change. This thermostat has a
built-in time delay of one hour less than the
power loss (up to 12 hours). When power is
restored to the system, heaters in the system
will begin to heat the crankcase oils. The
thermostat’s time delay will lock out the com-
pressor to prevent its operation until the com-
pressor oil is sufficiently warmed. During the
lockout time period, the auxiliary heating sys-
tem will operate to maintain setpoint tempera-
ture.
• PROGRAMMABLE BLOWER CONTROL —
You may program the fan blower to run continu-
ously during any given program period, regard-
less of the cycling of the heating or cooling
system.Duringprogramming,afterenteringthe
time and temperature for the time period, press
FAN
until FAN
is displayed. To override
ON
–
AUTO
FAN
constant fan, press
displayed.
until FAN
is
ON
–
AUTO
For example, if a power outage of three hours
occurs, the compressor will be locked out for
two hours.
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33
PROGRAMMING YOUR THERMOSTAT
Now you are ready to program your thermostat. This two-day program is set to run Saturday and Sunday.
section will help you plan and program your thermo- However, you may choose any five consecutive
stat to meet your needs.
days to be your weekday program days (such as
Sunday through Thursday; in this case, your week-
end program would run on Friday and Saturday).
For maximum comfort and efficiency, keep the fol-
lowing guidelines in mind when planning your pro-
gram.
First, you should answer the following questions to
help you decide what your needs are. If you are
using the thermostat for a commercial application (a
store, office building, etc.), answer questions 1
through 4. If you are using the thermostat in your
home, answer questions 5 through 8. Keep in mind
that you should plan for both weekday and weekend
programs.
• When heating (cooling) your building, program
the temperatures to be cooler (warmer) when
the building is vacant or during periods of low
activity.
• During early morning hours, the need for cool-
ing is usually minimal.
PLANNING FOR YOUR NEEDS
FOR COMMERCIAL APPLICATIONS:
1a.What time does the first person arrive at the
building in the morning?
This thermostat will store separate heating and
cooling programs for five-day (weekday) and two-
day (weekend) operation. Usually, the five-day pro-
gram is set to run Monday through Friday, and the
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34
b. What temperature should the building be at this IN YOUR HOME:
time? (heating? cooling?) These will be your
MOR (morning) temperature settings.
5a.What time does the first person get up in the
morning?
2a.What time do the building occupants reach a
maximum activity level (using lights, equipment,
meeting rooms, etc.)?
b. What temperature should the house be at this
time? These will be your MOR (morning) tem-
perature settings.
b. What temperature should the building be at this
time? These will be your DAY temperature set-
tings.
6a.What time does the last person leave the house
in the morning?
b. What temperature should the house be at this
time? These will be your DAY temperature set-
tings.
3a.What time do the building occupants reach a
minimumactivitylevel(limitedpersonnelinbuild-
ing)? These will be your EVE (evening) tempera-
ture settings.
7a.What time does the first person arrive home in
the evening?
b. What temperature should the building be at this
time?
b. What temperature should the house be at this
time? These will be your EVE (evening) tem-
perature settings.
4a.What time does the building become vacant?
b. What temperature should the building be at this
time? These will be your NHT (night) tempera-
ture settings.
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8a.What time does the last person go to bed at
night?
NOTE
To operate properly in the AUTO mode, there must
be aminimum 1°F separation between the highest
heat temperature and the lowest cool temperature
(see diagram below).
b. What temperature should the house be at this
time? These will be your NHT (night) tempera-
ture settings.
Now look at the factory preprogrammed times and
temperatures shown below. If this program will suit
79
COOLING TEMPERATURES
DEAD BAND 1°F
78
77
76
75
74
73
RUN
yourneeds, simplypress
factory preset program.
tobeginrunningthe
PRGM
HEATING TEMPERATURES
If you want to change the preprogrammed times and
temperatures, do the following.
Determine the time periods and heating and cooling
temperatures for your weekday program. You must
program 4 periods for each day (MOR, DAY, EVE,
and NHT). However, you may use the same heating
Cooling Program for ALL Days of the Week:
Heating Program for ALL days of the Week:
TEMP
78
82
78
78
PERIOD
MOR
DAY
EVE
NHT
TIME
TEMP
70
70
70
64
PERIOD
MOR
DAY
EVE
NHT
TIME
5:00 AM
9:00 AM
4:00 PM
10:00 PM
5:00 AM
9:00 AM
4:00 PM
10:00 PM
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36
and cooling temperatures for consecutive time peri-
ods. You can choose start times, heating tempera-
tures, and cooling temperatures independently for
bothweekdayandweekendprograms(forexample,
you may select 5:00 AM and 70° as the weekday
MORheatingstarttimeandtemperature,andchoose
7:00AMand76° astheweekdayMORcoolingstart
time and temperature). Use the table on the next
page to plan your program time periods, and the
temperaturesyouwantduringeachperiod.Youmay
also want to look at the sample program table to get
an idea of how the thermostat can be programmed.
ENTERING YOUR PROGRAM
Follow these steps to enter the heating and cooling
programs you have selected.
NOTE
We recommend that you remove the thermostat
from the wall for programming (especially for enter-
ing cooling programming). A fresh 9 volt Energizer®
alkaline battery must be installed to perform off-wall
SYSTEM
HEAT-OFF-COOL-AUTO
programming. BE SURE TO PRESS
TO
TURNTHERMOSTATOFFBEFOREREATTACH-
ING TO SUBBASE!
You cannot program the thermostat with the SYS-
TEM SWITCH in the AUTO position.
(Instructions continue on page 40).
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Heating/Cooling Schedule Plan
WEEKEND (2 DAY)
WEEKDAY (5 DAY)
Start
Time
Start
Time
Temperature
Temperature
MOR HEAT
DAY HEAT
EVE HEAT
NHT HEAT
MOR COOL
DAY COOL
EVE COOL
NHT COOL
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38
SAMPLE
Heating/Cooling Schedule Plan
WEEKEND (2 DAY)
WEEKDAY (5 DAY)
Start
Time
Start
Time
Temperature
Temperature
MOR HEAT
DAY HEAT
EVE HEAT
NHT HEAT
MOR COOL
DAY COOL
EVE COOL
NHT COOL
5:30 AM
68°
7:00 AM
11:00 AM
6:00 PM
11:30 PM
7:00 AM
12:30 PM
6:00 PM
11:30 PM
68°
8:00 AM
5:00 PM
10:30 PM
6:30 AM
2:00 PM
5:00 PM
10:30 PM
65°
70°
65°
76°
78°
72°
78°
70°
70°
65°
76°
74°
72°
78°
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39
Set Current Time and Day
SET
DAY
5. Press
once. The display will show the day
SET
of the week as an abbreviation (MO for Monday,
TU for Tuesday, etc.).
1. Press
once. The display will show min-
CLOCK
utes only.
TIME
FWD
TIME
6. Press and hold either
or
until you
BACK
EXAMPLE:
reach the current day of the week.
TIME
FWD
TIME
2. Press and hold either
or
until you
BACK
RUN
7. Press
once. The display will show the
PRGM
reach the correct minutes.
correct time and room temperature alternately.
SET
3. Press
once. The display window will
Enter Heating Program
CLOCK
show the hour only.
EXAMPLE:
During programming, if you don’t press any buttons
for 5 minutes, the thermostat will enter the HOLD
mode and will maintain a constant temperature. The
display will revert to the alternating time/tempera-
ture display. To resume programming after this
TIME
FWD
TIME
4. Press and hold either
or
until you
BACK
VIEW
reach the correct hour and AM/PM designation
(AM begins at midnight; PM begins at noon).
happens, press
until you are at the point
PRGM
where you stopped programming. Then you may
continue to enter your programs normally. If you
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40
want to stop programming at any time, simply press 3. To change the displayed start time to your se-
lected start time for weekday MOR heat pro-
RUN
to resume program operation.
PRGM
TIME
FWD
TIME
gram, press
or
until your selected
BACK
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until HEAT is displayed.
time appears. The time will change in 15 minute
increments.
VIEW
2. Press
once. 5 DAY (indicating weekday
PRGM
4. Press
or
until you reach your se-
program), and MOR, representing the morning
heating period, will appear in the display. Also
displayed are the currently programmed start
time for the MOR period and the currently pro-
grammed temperature.
lected weekday MOR heating temperature.
5. If you want the fan to run continuously during this
FAN
period, press
until FAN
is displayed.
ON
–
AUTO
VIEW
6. Press
. The currently programmed start
PRGM
EXAMPLE:
5 DAY
time and heating temperature for weekday DAY
will be displayed.
This display window shows that for the weekday
MOR period, the start time is 5:00 AM, and 64° is
the programmed temperature (this example re-
flects factory preprogramming).
7. Repeat steps 3 through 5 to select the start time
and heating temperature for the weekday DAY
program.
8. Repeat steps 3 through 7 for the weekday EVE
and NHT heating programs.
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41
9. After entering your weekday heating program,
repeat steps 1 through 8 for your weekend pro-
gramming (keep in mind that for weekend pro-
gramming, thedisplayshouldbechangedfrom5
DAY to 2 DAY).
Enter Cooling Program
CAUTION
!
If outside temperature is below 50°F, we
recommendthatyouremovethethermostat
from the wall before proceeding with the
following steps to program cooling tem-
peratures. Personal injury or property dam-
age may occur due to air conditioner com-
pressor slugging. A fresh 9 volt Energizer®
alkalinebatterymustbeinstalledtoperform
off-wall programming. Programming away
fromthewallshouldpreventaccidentalcom-
pressor operation. BE SURE TO USE
10.Whenyouhavecompletedenteringyourheating
RUN
program, press
.
PRGM
SYSTEM
HEAT-OFF-COOL-AUTO
TO TURN THERMOSTAT OFF BE-
FORE REATTACHING TO SUBBASE!
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42
SYSTEM
HEAT-OFF-COOL-AUTO
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until COOL is displayed.
4. Press
until COOL is displayed.
2. Follow the procedure for entering your heating 5. Repeat step 2 to check cooling temperatures.
program, using your selected cooling times and
RUN
6. Press
to begin program operation.
temperatures.
PRGM
CHECK YOUR PROGRAMMING
YOUR THERMOSTAT IS NOW COMPLETELY
PROGRAMMED AND READY TO AUTOMATI-
CALLYPROVIDEMAXIMUMCOMFORTANDEF-
FICIENCY!
Follow these steps to check your thermostat pro-
gramming one final time before beginning thermo-
stat operation.
SYSTEM
HEAT-OFF-COOL-AUTO
Press
until OFF is displayed. Reattach
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until HEAT is displayed.
SYSTEM
HEAT-OFF-COOL-AUTO
thermostat to subbase. Then press
to
VIEW
2. Press and hold
to view the heating period
PRGM
select the operation mode you want (HEAT, COOL,
times and temperatures in sequence for week-
day, then weekend MOR, DAY, EVE, and NHT
program periods.
FAN
AUTO). Press
until FAN
is displayed
ON
–
AUTO
(automatic cycling).
RUN
3. Press
.
PRGM
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43
QUESTIONS AND ANSWERS
1. How can I permanently change a part of my 3. How can I finish my programming if the dis-
program?
play has already changed to time/tempera-
ture?
VIEW
Press
until you reach the time/tempera-
PRGM
During programming, if no buttons are pressed
for five minutes, the thermostat will enter the
HOLD mode and maintain a constant tempera-
ture. The display will change to the time/tem-
perature mode. To resume programming, press
ture schedule you want. Then press
or
TIME
FWD
TIME
and
and
to change the pro-
BACK
gram. See PROGRAMMING YOUR THERMO-
STAT.
VIEW
until you return to the point where you
PRGM
2. How can I have no change in temperature
from one time period to another?
stopped programming. Then you may continue
to program the thermostat normally. If you want
Simply select the same temperature for each
consecutive time period. For example, you may
select the same weekday EVE cooling tempera-
ture as you did for weekday DAY, which means
the temperature will not change when the EVE
period begins. See PROGRAMMING YOUR
THERMOSTAT.
RUN
tostopprogrammingatthispoint, press
to
PRGM
start the normal program function. See PRO-
GRAMMING YOUR THERMOSTAT.
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44
4. What happens if the electricity goes off or is 6. What can cause the thermostat display to
manually shut off?
freeze or go blank?
If you have not installed a 9 volt alkaline battery,
the display will go blank and the program will be
lost in approximately one minute. When electric-
ity is restored, the thermostat will maintain a
heating temperature of 64°F and a cooling tem-
perature of 82°F until you reenter your program.
Setpoint temperature will not be displayed.
If a fresh 9 volt Energizer® alkaline battery is
installed, the program will be maintained for
about one week with no 24 VAC power present
to the thermostat. See OPERATING YOUR
THERMOSTAT.
A completely blank display may indicate that
power has been lost to the thermostat and the
backup battery is also dead. However, if there is
power to the thermostat and the display is blank
or frozen, static discharge is probably the cause.
During periods of low humidity (especially during
cold weather), you may feel or see a spark
discharge when you touch the thermostat. This
may cause the program to be lost or the thermo-
stattodisplayincorrectly.Tocorrectthis,remove
the thermostat from the wall and disconnect the
battery. Wait about one minute, then re-connect
the battery. The thermostat will revert to the
factory preset program until you re-program the
thermostat. If you don’t want to re-program the
5. Why can’t I program the thermostat in the
AUTO mode?
The thermostat can only be programmed in the
HEATandCOOLmodes.SeePROGRAMMING
YOUR THERMOSTAT.
SYSTEM
HEAT-OFF-COOL-AUTO
thermostat immediately, press
until
OFF is displayed and replace the thermostat on
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45
the heating temperature higher. To set a lower
cooling temperature, you must select a lower
heating temperature. See PROGRAMMING
YOUR THERMOSTAT.
SYSTEM
HEAT-OFF-COOL-AUTO
the wall. Then press
for desired sys-
to begin the
RUN
PRGM
tem operation, and press
factory preset program. Or you may re-program
the thermostat, then replace it on the wall.
8. The display is flashing BAT. What does this
mean?
To prevent further static discharge problems,
touch another object to release static build-up
before touching the thermostat. See OPERAT-
ING YOUR THERMOSTAT.
The 9 volt battery installed in the thermostat is
low and should be replaced with a fresh 9 volt
Energizer® alkaline battery. See OPERATING
YOUR THERMOSTAT.
7. Why won’t the setpoint temperature go to the
temperature I want?
9. The display shows a continuous (non-flash-
ing) BAT. What does this mean?
In the AUTO mode, the highest heating setpoint
temperature you select must be at least 1°F
lower than the lowest cooling setpoint tempera-
ture you select (for example, if 70°F is your
lowestselectedcoolingtemperature, youcannot
select a heating temperature any higher than
69°F). If such a conflict exists, you must set the
lowest cooling temperature higher in order to set
Thethermostatisnotbeingsuppliedwith24VAC
power. The thermostat is operating on battery
power alone. See OPERATING YOUR THER-
MOSTAT.
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46
10.Why won’t the system turn on, even though 11.Why doesn’t the temperature change at the
the thermostat display is functioning nor-
mally?
time I programmed?
There may be a number of causes for this situa-
tion. The following are primary reasons.
Either the compressor lockout feature is in op-
eration or the thermostat is not currently calling
for heat or cool. Wait about 5 minutes for the
compressorlockouttoexpire. Ifthesystemisstill
not running, read the cautionary statement be-
•
The EMR function is operating. The EMR
function will automatically bring on the sys-
tem automatically to bring the temperature
to the selected level by the beginning of the
next program period. See OPERATING
YOUR THERMOSTAT.
low.Then,ifconditionspermit,usethe
or
buttons to move the temperature above or
below the setpoint temperature. See OPERAT-
ING YOUR THERMOSTAT.
•
•
You have programmed the incorrect day or
time.Checkyourprogramming(besurethat
the times you programmed are correct AM
or PM times). See PROGRAMMING YOUR
THERMOSTAT.
CAUTION
!
If the outside temperature is below 50°F, DO
NOTuse or tomovethetempera-
ture above or below the setpoint tempera-
ture. Property damage may result due to
compressor slugging.
The thermostat is in the HOLD mode. Press
RUN
to start program operation. See OP-
PRGM
ERATING YOUR THERMOSTAT.
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47
•
The compressor lockout feature is operat- 14.Betweenheatingandcoolingseasons, Iwant
ing;waitabout5minutesforsystemtobegin
running. See OPERATING YOUR THER-
MOSTAT.
to turn my system off. Can I do this without
affecting my thermostat programming?
Any time you wish to turn your system off, simply
12.Why does the blower fan keep running after
the system has turned off?
SYSTEM
HEAT-OFF-COOL-AUTO
press
until OFF is displayed. This will
not affect your thermostat’s programming in any
•
You have programmed the fan to run con-
tinuouslyduringthisperiod.SeePROGRAM-
MING YOUR THERMOSTAT.
SYSTEM
HEAT-OFF-COOL-AUTO
way. To turn the system back on, press
untilHEAT,COOL, etc. isdisplayed. Thesystem
will automatically begin operating according to
the current thermostat program, unless the ther-
mostat is in the HOLD mode. See OPERATING
YOUR THERMOSTAT.
•
The blower delay feature is operating. This
energy saving feature continues to blow
conditioned air through the ducts after the
system has turned off, rather than letting the
air dissipate.
13.Why is the system turning on and off so
frequently (seldom)?
The anticipation setting is too low (high). To
change anticipation settings, see OPERATING
YOUR THERMOSTAT.
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48
15.Iliveinanareawheredaylightsavingstimeis
observed. How do I change the thermostat
clock twice a year without affecting thermo-
stat programming?
withinoneminute,youmaynotloseyourthermo-
stat programming. After installing a new battery,
follow the procedures in CHECK YOUR PRO-
GRAMMING to determine whether your pro-
gramming was maintained. If the thermostat
To change your clock, follow the instructions for
setting current time and day. See ENTERING
YOUR PROGRAM. Thermostat programming is
not affected when you change the clock.
SYSTEM
HEAT-OFF-COOL-AUTO
maintains programming, press
until
OFF is displayed, put the thermostat back on the
SYSTEM
HEAT-OFF-COOL-AUTO
wall,press
toselecttheoperatingmode
17.Do I have to re-program my thermostat after
I change the battery?
RUN
you want, then press
to start program
PRGM
When the thermostat is on the wall and the
system has power, the thermostat is being pow-
ered by a 24v AC source. If power is lost, or if the
thermostat is removed from the wall, the pro-
gram will be retained for approximately one
minute if there is no battery installed or if the
installed battery is dead. If you are changing the
battery after seeing a flashing BAT on the dis-
play, the installed battery may be dead. If you
remove the old battery and install a fresh one
operation. If the program is lost, re-program the
thermostat.SeePROGRAMMINGYOURTHER-
MOSTAT.
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49
NOTES
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50
NOTES
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51
If you need further information about this product, please write to
White-Rodgers Division, Emerson Electric Co.
9797 Reavis Road
St. Louis, MO 63123-5398
Attn: Technical Service Department
Part No. 37-5414A
9513
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