OPERATION GUIDE
1F92W-71
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
PROGRAMMING YOUR
FEATURES ........................................... 4
OPERATING YOUR THERMOSTAT ........ 5
PARTS OF THE THERMOSTAT
The Back Of the Thermostat Body
The Display
THERMOSTAT ................................... 18
PLANNING FOR YOUR NEEDS
ENTERING YOUR PROGRAM
Set Current Time and Day
Enter Heating Program
The Thermostat Buttons
Enter Cooling Program
OPERATING FEATURES
CHECK YOUR PROGRAMMING
QUESTIONS AND ANSWERS ............... 29
Operator: Save this
booklet for future use!
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3
YOUR NEW THERMOSTAT’S FEATURES
• Five-day/two-day programming capability
• Backlit LCD displays continuous setpoint,
time, and room temperature
• Adjustable cycle times
• 9 volt Energizer® alkaline battery backup
• Simultaneous heat and cool program
storage
• Four separate time and temperature set-
tings per 24-hour period
• Compressor long term cycle protection
• Up to 3 stages of heat and up to 2 stages
of cool
• Computed Energy Management Recov-
ery (EMR)
• Automatic changeover (operator select-
able)
• Two hour temperature override
• Manual program override (HOLD tem-
perature)
• Compressor short cycle protection
• Blower delay in the cooling cycle
• Preprogrammed temperature control
• Audio and visual prompting during opera-
tion
• Programmable blower control
• Temperature range 40° to 99°F
• °F/°C convertibility
• Compatible with optional Remote Sensor
• Electric Heat (installer-selectable)
• "Advance Program" button
• Armchair programming capability
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4
OPERATING YOUR THERMOSTAT
Before you begin programming your new ther- The subbase is attached to the wall, but you
mostat, you should be familiar with its features can remove the thermostat body for easy pro-
and with the display and the location and gramming. To remove the thermostat body
operation of the thermostat buttons. The infor- from the subbase, grasp the thermostat body
mation in this section will help you become and gently pull it out from the bottom of the
familiar with your thermostat so that you can subbase, then pivot up. To attach the thermo-
easily program it.
stat body, line up the four terminal pins on the
upper section of the thermostat back with the
matching connector on the subbase. Insert
these, then gently pivot the thermostat body
downtoconnecttheninepinconnectorsonthe
lower portion of the thermostat back. Gently
push until the snap connectors engage. DO
NOT FORCE OR PRY THE THERMOSTAT,
as this may damage the unit.
Your thermostat consists of two parts: the
thermostat body and the subbase.
CAUTION
!
SYSTEM
HEAT-OFF-COOL-AUTO
Press
to turn thermostat OFF
before removing or attaching the ther-
mostat body. Equipment damage and/
or personal injury could occur.
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5
factory preprogrammed heating tempera-
ture of 64°F and a cooling temperature of
82°F after power is restored. You must
reprogram the thermostat if this happens.
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.
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 battery will provide
power for all functions except the display
lightandaudioprompting, whichworkonly
on 24 VAC power. If the word BAT is
displayed continuously (non-flashing), the
thermostat is not being supplied with
24 VAC power and is being powered by
the battery alone.
1. The 9 volt Energizer® alkaline battery pro-
vides power to the thermostat when the
24 VAC power is interrupted (for example,
when you remove the thermostat from the
wall for programming). A fresh battery will
maintain the stored program for approxi-
mately one week. If power loss is long
enough for the program to be lost, the
thermostat will automatically maintain a
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6
4-pin connector
Battery
CAUTION
!
SYSTEM
HEAT-OFF-COOL-AUTO
Press
to turn thermostat OFF
before removing thermostat from the
wall to replace the battery.
2. You may adjust option switch #4 for auto-
matic changeover from heating to cooling
(see OPERATING FEATURES).
W18
Option switches
9-pin connector
BACK OF THERMOSTAT BODY
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7
Other than
and
, the buttons are
Displays the setpoint temperature.
3
4
located behind the thermostat door. To open
the door, use your fingernail in the indentation
at the top center of the door. Pull the door out,
then swing the door down on its hinges.
5 DAY indicates that the displayed pro-
gram is the weekday program. 2 DAY
indicates that the displayed program is the
weekend program.
Following are brief descriptions of the display
and the thermostat buttons.
ThewordBATflashesonthedisplaywhen
5
6
the 9 volt alkaline battery is weak and
should be replaced. The word BAT will be
displayed continuously (non-flashing)
when the thermostat is operating on bat-
tery power only.
The Display
Continuously displays system mode
1
2
(HEAT, EMER, OFF, COOL, AUTO,
HOLD).Duringprogramming,theprogram
period is displayed (MOR, DAY, EVE,
NHT).
FAN
operatingcontinuously,regardlessofheat-
ing or cooling system cycling. FAN is
is displayed when the blower is
Alternately displays room temperature (F
displayed during automatic fan operation
(when the blower cycles with the heating
or cooling system).
denotes degrees Fahrenheit and C de-
notes degrees Celsius) and time of day (A
denotes AM time and P denotes PM time).
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8
EMER. PUMP
MALF. AUX.
5
DAY
FAN
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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The Thermostat Buttons and Lights
anticipation setting mode.
Sets the system mode (HEATing,
Used to initiate or review thermostat pro-
gramming.
7
8
9
12
13
EMERgency backup, OFF, COOLing, or
AUTOmatic changeover [user selectable
feature]).
Used to start program operation after pro-
gramming. Also used to return thermostat
to program operation after being in HOLD
mode.
Selects fan operation (see #6, above).
This button is also used to program the fan
to run continuously during a program pe-
riod.
Used to manually override programming
14
15
to hold at a selected temperature (when
HOLD is displayed).
Runsdisplayforwardorbackwardthrough
time, day, or anticipation settings during
programming.
Used to advance thermostat program to
the next program period (for example,
from the MOR program to the DAY pro-
gram).
TIME
FWD
TIME
BACK
Used with
and
to set current
10
11
time and day of the week.
(Blue arrow) Lowers temperature setting
16
Usedduringprogrammingtosetthedayof
(40°F or 4°C minimum).
SET
CLOCK
the week. Also used with
to enter
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10
heat pump system malfunction (refer to
heat pump manufacturer's operating
manual). A continuous (non-flashing)
PUMP light indicates that the heat pump
compressor is functioning — a flashing
PUMP light indicates that the compressor
is locked out. AUX light indicates that the
auxiliary system is operating.
(Red arrow) Raises temperature setting
(99°F or 37°C maximum)
17
18
EMER light indicates that the system is in
theemergencymode(theheatpumpcom-
pressor is off and the auxiliary system is
maintaining setpoint temperature — there
is a 5 to 10 minute startup delay on the first
emergency cycle). MALF light indicates a
16 17
18
EMER. PUMP
MALF. AUX.
5
DAY
FAN
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
10 11 12
14 15
13
9
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period, beginning at 6:00 AM, you have
programmed a temperature of 70°F. The
thermostat will automatically activate the
heating system at about 5:00 AM, so that
the programmed 70°F temperature is
reached by about 6:00 AM.
OPERATING FEATURES
Now that you are familiar with the thermostat
display and buttons, read the following infor-
mation to learn about the many features of the
thermostat.
• COMPUTED ENERGY MANAGEMENT
RECOVERY (EMR) - The thermostat's
microcomputer automatically calculates
the time it will take to change the tempera-
ture to the next program setting. Then the
thermostatwillactivatetheheatingorcool-
ing system to change the temperature so
that the desired temperature is reached at
the beginning of the next program period.
Asanexampleofthisfeature, assumethat
you have programmed your thermostat to
provide an overnight heating temperature
of 62°F, and that during the next program
• AUTOMATICCHANGEOVER—Youcan
set the thermostat to automatically switch
the system from heating to cooling as
needed.First,youmustmoveoptionswitch
#4 (located on the back of the thermostat
body) to the ON position, if it has not
already been done. To do this, turn off
24 VAC power to the thermostat. 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
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12
(down), use a pencil or small screwdriver
to 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 op-
eration. Replace the battery, reprogram
the thermostat if necessary, put the ther-
mostat back on the wall, and restore
24 VAC power. To set the thermostat for
automaticchangeoverafterprogramming,
SYSTEM
Automatic Changeover (ON)
ON
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 ON
In the AUTO mode, the thermostat will not
allow the temperature separation between the
highestheatsettingandthelowestcoolsetting
to be less that 1°F. For example, if the highest
heat setting is 76°F, the lowest cool setting
cannot be below 77°F (see diagram below).
press
to set the thermostat to
HEAT-OFF-COOL-AUTO
AUTO (the setpoint display is blank in the
AUTO mode). The system will now auto-
maticallyswitchbetweenheatingandcool-
ing depending on the actual room tem-
perature.
79
78
COOLING TEMPERATURES
77
76
DEAD BAND 1°F
75
HEATING TEMPERATURES
74
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conservation when the building is unoccu-
pied for an extended period of time.
• TWO HOUR TEMPERATURE OVER-
RIDE — Press or until the
display shows the temperature you want.
The thermostat will override current pro-
grammingandkeeptheroomtemperature
at the selected temperature for two hours.
After two hours, the thermostat will auto-
matically revert to the program.
TIME
FWD
• °F/°C CONVERTIBILITY — Press
TIME
BACK
and
at the same time until the tem-
perature display is in °C (Celsius). To
display °F, repeat the process.
• ADJUSTABLE HEATING AND COOL-
ING CYCLE TIMES (ANTICIPATION) —
If the heating/cooling system is turning on
and off too often (short cycles) or not often
enough (long cycles), you may want to
adjust the anticipation setting.
• HOLD TEMPERATURE — The thermo-
stat can hold any temperature within its
range for an indefinite period, without re-
HOLD
vertingtotheprogram.Press
.HOLD
TEMP
willbedisplayed. Thenchoosethedesired
holdtemperaturebypressing or
.
CAUTION
!
The thermostat will hold the room tem-
perature at the selected setting until you
An anticipation setting of less than 10
may cause decreased compressor life.
RUN
press
to start program operation
PRGM
again. This feature is ideal for energy
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SET
CLOCK
show COOL 14 (factory preprogrammed
To adjust HEAT anticipation, press
TIME
FWD
cooling anticipation). Use the
and
SET
DAY
and
at the same time. The display
TIME
BACK
buttons to adjust anticipation. To set
will show HEAT 18. You may select any
anticipation setting from 4 to 40 (note that
for add-on heat pump systems, a mini-
mum anticipation of 10 is recom-
mended). When you adjust anticipation,
increase or decrease the displayed num-
ber by only one or two digits, then let the
system run for a while to see if the adjust-
ment is sufficient. If the heat cycles are too
TIME
AUXILIARY heat anticipation (not appli-
SET
CLOCK
cable to multi-stage use), press
and
SET
DAY
at the same time again. The display
will show AUX 8 (factory preprogrammed
TIME
FWD
auxiliary anticipation). Use the
and
TIME
BACK
buttons to adjust anticipation. Press
to return to your program.
short, press
to increase the cycle
FWD
RUN
PRGM
time. If the heat cycles are too long, press
TIME
BACK
•
LOWBATTERYINDICATOR—Theword
BAT will flash on the display if the battery
is low and should be replaced.
to decrease the cycle time. To set
SET
SET
DAY
COOL anticipation, press
and
CLOCK
at the same time again. The display will
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15
•
•
AUDIO PROMPTING — Each time you
press a button, the thermostat will beep.
SYSTEM
HEAT-OFF-COOL-AUTO
b) Pressing
modes.
to change operating
BACKLIT DISPLAY — When you press
any button on the thermostat, the display
is lit for approximately eight seconds (this
feature works only when the thermostat is
attached to the wall and 24 VAC power is
present to the thermostat).
c) Pressing
or to create a call
for COOL or HEAT too soon after a
previous call.
During lockout in the HEAT mode, the
green compressor (PUMP) LED will flash.
During lockout in the COOL mode, the
blower will operate, but compressor op-
eration will be delayed.
•
COMPRESSOR SHORT CYCLE PRO-
TECTION — To protect your compressor
from potential damage due to rapid cy-
cling, thisthermostathasabuilt-indelayof
5 minutes between cooling cycles. The
following may cause a time delay inCOOL
or HEAT:
Auxiliaryheatisfunctionalduringthecom-
pressorlockoutandcanbeusedasneeded
to maintain room temperature.
• COMPRESSOR LONG TERM CYCLE
PROTECTION — If your system begins to
operate too soon after an extended power
outage, the compressor may be damaged
a) Return of power after a momentary
power outage.
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due to crankcase oil temperature change.
This thermostat has a built-in time delay of
onehourlessthanthepowerloss(upto12
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 compressor to
prevent its operation until the compressor
oil is sufficiently warmed. During the lock-
out time period, the auxiliary heating sys-
tem will operate to maintain setpoint tem-
perature.
• SYSTEM INDICATOR LIGHTS — The
four lights on the upper right part of the
thermostatindicatesystemoperation(see
PARTS OF THE THERMOSTAT for spe-
cific descriptions of what each light indi-
cates).
• PROGRAMMABLEBLOWERCONTROL
— You may program the fan blower to run
continuously during any given program
period, regardless of the cycling of the
heating or cooling system. During pro-
gramming,afterenteringthetimeandtem-
FAN
For example, if a power outage of three
hoursoccurs,thecompressorwillbelocked
out for two hours.
perature for the time period, press
ON
–
AUTO
until FAN
is displayed. To override
FAN
constant fan, press
displayed.
until FAN
is
ON
–
AUTO
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PROGRAMMING YOUR THERMOSTAT
Now you are ready to program your thermo-
stat. This section will help you plan and pro-
gram your thermostat to meet your needs.
PLANNING FOR YOUR NEEDS
This thermostat will store separate heating
and cooling programs for five-day (weekday)
and two-day (weekend) operation. Usually,
the five-day program is set to run Monday
throughFriday, andthetwo-dayprogramisset
to run Saturday and Sunday. However, you
may choose any five consecutive days to be
your weekday program days (such as Sunday
through Thursday; in this case, your weekend
program would run on Friday and Saturday).
For maximum comfort and efficiency, keep the
following guidelines in mind when planning
your program.
• When heating (cooling) your building, pro-
gram the temperatures to be cooler
(warmer) when the building is vacant or
during periods of low activity.
• During early morning hours, the need for
cooling is usually minimal.
First, you should answer the following ques-
tions to help you decide what your needs are.
If you are using the thermostat for a commer-
cial application (a store, office building, etc.),
answer questions 1 through 4. If you are using
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18
the thermostat in your home, answer ques- 3a. Whattimedothebuildingoccupantsreach
tions 5 through 8. Keep in mind that you should
planforbothweekdayandweekendprograms.
aminimumactivitylevel(limitedpersonnel
in building)? These will be your EVE
(evening) temperature settings.
FOR COMMERCIAL APPLICATIONS:
b. What temperature should the building be
at this time?
1a. What time does the first person arrive at
the building in the morning?
4a. What time does the building become
vacant?
b. What temperature should the building be
at this time? (heating? cooling?) These
will be your MOR (morning) temperature
settings.
b. What temperature should the building be
atthistime?ThesewillbeyourNHT(night)
temperature settings.
2a. Whattimedothebuildingoccupantsreach
a maximum activity level (using lights,
equipment, meeting rooms, etc.)?
IN YOUR HOME:
5a. What time does the first person get up in
the morning?
b. What temperature should the building be
at this time? These will be your DAY tem-
perature settings.
b. What temperature should the house be at
this time? These will be your MOR (morn-
ing) temperature settings.
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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 NHT (night)
temperature settings.
b. What temperature should the house be at
this time? These will be your DAY tem- Now look at the factory preprogrammed times
perature settings.
and temperatures shown below. If this pro-
RUN
PRGM
7a. What time does the first person arrive
home in the evening?
gramwillsuityourneeds, simplypress
to
begin running the factory preset program.
b. What temperature should the house be at
thistime?ThesewillbeyourEVE(evening)
temperature settings.
If you want to change the preprogrammed
times and temperatures, do the following.
8a. What time does the last person go to bed
at night?
FACTORY PREPROGRAMMING
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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20
temperatures for consecutive time periods.
You can choose start times, heating tempera-
NOTE
To operate properly in the AUTO mode, there tures,andcoolingtemperaturesindependently
must be a minimum 1°F separation between for both weekday and weekend programs (for
the highest heat temperature and the lowest example, you may select 5:00 AM and 70° as
cool temperature (see diagram below).
the weekday MOR heating start time and
temperature, and choose 7:00 AM and 76° as
the weekday MOR cooling start time and
temperature). Use the following table to plan
your program time periods, and the tempera-
tures you want during each period. You may
also want to look at the sample program table
to get an idea of how the thermostat can be
programmed.
79
78
COOLING TEMPERATURES
77
76
DEAD BAND 1°F
75
HEATING TEMPERATURES
74
Determine the time periods and heating and
cooling temperatures for your weekday pro-
gram. You must program 4 periods for each
day (MOR, DAY, EVE, and NHT). However,
you may use the same heating and cooling
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21
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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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°
7:30 AM
2:00 PM
6:00 PM
12:00 AM
8:00 AM
2:00 PM
6:00 PM
12:00 AM
68°
8:00 AM
4:30 PM
11:00 PM
8:00 AM
12:00 PM
4:30 PM
11:00 PM
66°
70°
66°
76°
78°
74°
78°
70°
70°
66°
76°
74°
74°
78°
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23
Set Current Time and Day
ENTERING YOUR PROGRAM
SET
CLOCK
Follow these steps to enter the heating and
cooling programs you have selected.
1. Press
once. The display will show
minutes only.
NOTE
EXAMPLE:
TIME
FWD
TIME
BACK
We recommend that you remove the thermo-
stat from the wall for programming (especially
for entering cooling programming). A fresh 9
volt Energizer® alkaline battery must be in-
stalled to perform off-wall programming. BE
SYSTEM
2. Press and hold either
or
until
you reach the correct minutes.
SET
CLOCK
3. Press
once. The display window will
show the hour only.
EXAMPLE:
SURE TO PRESS
TO TURN THER-
HEAT-OFF-COOL-AUTO
MOSTAT OFF BEFORE REATTACHING
THERMOSTAT TO SUBBASE!
TIME
FWD
TIME
BACK
4. Press and hold either
or
until
you reach the correct hour and AM/PM
designation (AM begins at midnight; PM
begins at noon).
You cannot program the thermostat with the
SYSTEM SWITCH in the AUTO position.
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24
SET
DAY
VIEW
PRGM
5. Press
once. The display will show
until you are at the point where you
the day of the week as an abbreviation stopped programming. Then you may con-
(MO for Monday, TU for Tuesday, etc.).
tinue to enter your programs normally. If you
want to stop programming at any time, simply
TIME
FWD
TIME
BACK
6. Press and hold either
or
until
RUN
press
to resume program operation.
PRGM
you reach the current day of the week.
SYSTEM
HEAT-OFF-COOL-AUTO
RUN
PRGM
1. Press
2. Press
until HEAT is displayed.
7. Press
once. The display will show
the correct time and room temperature
alternately.
VIEW
PRGM
once. 5 DAY (indicating
weekday program), and MOR, represent-
ing the morning heating period, will ap-
pear in the display. Also displayed are
the currently programmed start time for
the MOR period and the currently pro-
grammed temperature.
Enter Heating Program
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/temperature display. To re-
sume programming after this happens, press
EXAMPLE:
5 DAY
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25
This display window shows that for the
weekday MOR period, the start time is
5:00 AM, and 64° is the programmed tem-
perature(thisexamplereflectsfactorypre-
programming).
VIEW
PRGM
6. Press
. The currently programmed
start time and heating temperature for
weekday DAY will be displayed.
7. Repeatsteps3through5toselectthestart
timeandheatingtemperaturefortheweek-
day DAY program.
3. To change the displayed start time to your
selected start time for weekday MOR heat
8. Repeat steps 3 through 7 for the weekday
TIME
FWD
TIME
BACK
program, press
or
until your
EVE and NHT heating programs.
selected time is displayed. The time will
change in 15 minute increments.
9. After entering your weekday heating pro-
gram, repeat steps 1 through 8 for your
weekend programming (keep in mind that
for weekend programming, the display
should be changed from 5 DAY to 2 DAY).
4. Press
or
until you reach your
selected weekday MOR heating tempera-
ture.
5. Ifyouwantthefantoruncontinuouslyduring
10. When you have completed entering your
FAN
this period, press
displayed.
until FAN
is
RUN
ON
–
AUTO
heating program, press
.
PRGM
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26
Enter Cooling Program
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until COOL is displayed.
CAUTION
!
2. Enter your cooling program by following
the same procedure you followed for en-
tering your heating program.
If outside temperature is below 50°F,
we recommend that you remove the
thermostat from the wall before pro-
ceedingwiththefollowingstepstopro-
gram cooling temperatures. Personal
injury or property damage may occur
duetoairconditionercompressorslug-
ging. A fresh 9 volt Energizer® alkaline
battery must be installed to perform
off-wall programming. Programming
away from the wall should prevent ac-
cidental compressor operation. BE
SYSTEM
CHECK YOUR PROGRAMMING
Follow these steps to check your thermostat
programming one final time before beginning
thermostat operation.
SYSTEM
HEAT-OFF-COOL-AUTO
1. Press
until HEAT is displayed.
VIEW
PRGM
2. Press and hold
to view the heating
periodtimesandtemperaturesinsequence
for weekday, then weekend MOR, DAY,
EVE, and NHT program periods.
SURE TO PRESS
TO TURN
HEAT-OFF-COOL-AUTO
THERMOSTAT OFF BEFORE REAT-
TACHING TO THE SUBBASE!
RUN
PRGM
3. Press
.
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27
SYSTEM
HEAT-OFF-COOL-AUTO
SYSTEM
HEAT-OFF-COOL-AUTO
4. Press
until COOL is displayed.
Press
until OFF is displayed. Reattach
SYSTEM
HEAT-OFF-COOL-AUTO
5. Repeat step 2 to check cooling tempera-
tures.
thermostat to subbase. Then press
to
select the operation mode you want (HEAT,
RUN
PRGM
FAN
6. Press
to begin program operation.
COOL, AUTO). Press
until FAN
is
ON
–
AUTO
displayed (automatic cycling).
YOUR THERMOSTAT IS NOW COM-
PLETELY PROGRAMMED AND READY TO
AUTOMATICALLY PROVIDE MAXIMUM
COMFORT AND EFFICIENCY!
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28
QUESTIONS AND ANSWERS
1. How can I permanently change a part of
will not change when the EVE period be-
gins.SeePROGRAMMINGYOURTHER-
MOSTAT.
my program?
VIEW
PRGM
Press
until you reach the time/tem-
3. How can I finish my programming if the
display has already changed to time/
temperature?
perature schedule you want. Then press
TIME
FWD
TIME
BACK
or
and
and
tochange
During programming, if no buttons are
pressed for five minutes, the thermostat
will enter the HOLD mode and maintain a
constant temperature. The display will
change to the time/temperature mode. To
VIEW
theprogram.SeePROGRAMMINGYOUR
THERMOSTAT.
2. How can I have no change in tempera-
ture from one time period to another?
Simply select the same temperature for
eachconsecutivetimeperiod.Forexample,
you may select the same weekday EVE
cooling temperature as you did for week-
day DAY, which means the temperature
resume programming, press
until
PRGM
you return to the point where you stopped
programming. Then you may continue to
program the thermostat normally. If you
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29
want to stop programming at this point,
for about one week with no 24 VAC power
present to the thermostat See OPERAT-
ING YOUR THERMOSTAT.
RUN
PRGM
press
to start the normal program
function. See PROGRAMMING YOUR
THERMOSTAT.
5. Why can’t I program the thermostat in
the AUTO mode?
4. What happens if the electricity goes off
or is manually shut off?
The thermostat can only be programmed
intheHEATand COOLmodes. SeePRO-
GRAMMING YOUR THERMOSTAT.
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 electricity is restored, the
thermostat will maintain a heating tem-
perature of 64°F and a cooling tempera-
ture of 82°F until you re-enter your pro-
gram. Setpoint temperature will not be
displayed.
6. What can cause the thermostat display
to freeze or go blank?
A completely blank display may indicate
that power has been lost to the thermostat
and the backup battery is also dead. How-
ever, if there is power to the thermostat
and the display is blank or frozen, static
discharge is probably the cause.
If a fresh 9 volt Energizer® alkaline battery
isinstalled, theprogramwillbemaintained
During periods of low humidity (especially
during cold weather), you may feel or see
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30
a spark discharge when you touch the
thermostat. This may cause the program
to be lost or the thermostat to display
incorrectly. To correct this, remove the
thermostat from the wall and disconnect
the battery. Wait about one minute, then
reconnect the battery. The thermostat will
revert to the factory preset program until
you reprogram the thermostat. If you don’t
want to reprogram the thermostat immedi-
SYSTEM
build-up before touching the thermostat.
SeeOPERATINGYOURTHERMOSTAT.
7. Why won’t the setpoint temperature go
to the temperature I want?
In the AUTO mode, the highest heating
setpointtemperatureyouselectmustbeat
least 1°F lower than the lowest cooling
setpoint temperature you select (for ex-
ample, if 70°F is your lowest selected
cooling temperature, you cannot select a
heatingtemperatureanyhigherthan69°F).
If such a conflict exists, you must set the
lowestcoolingtemperaturehigherinorder
to set the heating temperature higher. To
set a lower cooling temperature, you must
select a lower heating temperature. See
PROGRAMMINGYOURTHERMOSTAT.
ately, press
until OFF is displayed
HEAT-OFF-COOL-AUTO
and replace the thermostat on the wall.
RUN
PRGM
Then press
to begin the factory
preset program. Or you may reprogram
the thermostat, then replace it on the wall.
To prevent further static discharge prob-
lems,touchanotherobjecttoreleasestatic
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31
8. Why doesn’t the display light come on 10. The display shows a continuous (non-
when I press a button? Why don’t I hear
a beep when I press a button?
flashing) BAT. What does this mean?
The thermostat is not being supplied with
24 VAC power. The thermostat is operat-
ingonbatterypoweralone.SeeOPERAT-
ING YOUR THERMOSTAT.
The display light and audio prompting
(beep) only work when the thermostat is
onthewalland24VACpowerispresentto
the thermostat. These features will not
work on battery power alone. See OPER-
ATING YOUR THERMOSTAT.
11. Why won’t the system turn on, even
though the thermostat display is func-
tioning normally?
9. The display is flashing BAT. What does
this mean?
Either the compressor lockout feature is in
operationorthethermostatisnotcurrently
calling for heat or cool. Wait about 5 min-
utes for the compressor lockout to expire.
If the system is still not running, read the
cautionary statement on the next page.
Then, if conditions permit, use the
The 9 volt battery installed in the thermo-
stat is low and should be replaced with a
fresh 9 volt Energizer® alkaline battery.
SeeOPERATINGYOURTHERMOSTAT.
or
buttons to move the temperature
above or below the setpoint temperature.
SeeOPERATINGYOURTHERMOSTAT.
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32
•
You have programmed the incorrect
day or time. Check your programming
(besurethatthetimesyouprogrammed
arecorrectAMorPMtimes). SeePRO-
GRAMMING YOUR THERMOSTAT.
CAUTION
!
Iftheoutsidetemperatureisbelow50°F,
DO NOT use to move the tempera-
ture below the setpoint temperature.
Property damage may result due to
compressor operation in cold weather.
•
•
The thermostat is in the HOLD mode.
RUN
PRGM
Press
to start program operation.
12. Whydoesn’tthetemperaturechangeat
the time I programmed?
See OPERATING YOUR THERMO-
STAT.
There may be a number of causes for this
situation. The following are primary rea-
sons.
The compressor lockout feature is op-
erating; wait about 5 minutes for sys-
tem to begin running. See OPERAT-
ING YOUR THERMOSTAT.
•
The EMR function is operating. The
EMR function will bring the system on
automatically to bring the temperature
to the selected level by the beginning of
the next program period. See OPER-
ATING YOUR THERMOSTAT.
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33
13. Why does the blower fan keep running 15. Between heating and cooling seasons,
after the system has turned off?
I want to turn my system off. Can I do
this without affecting my thermostat
programming?
•
You have programmed the fan to run
continuously during this period. See
PROGRAMMING YOUR THERMO-
STAT.
Any time you wish to turn your system off,
SYSTEM
HEAT-OFF-COOL-AUTO
simplypress
untilthedisplayshows
•
The blower delay feature is operating.
This energy saving feature continues
toblowconditionedairthroughtheducts
after the system has turned off, rather
than letting the air dissipate.
OFF. This will not affect your thermostat's
programming in any way. To turn the sys-
SYSTEM
tem back on, press
until HEAT,
HEAT-OFF-COOL-AUTO
COOL, etc. is displayed. The system will
automatically begin operating according
to the current thermostat program, unless
the thermostat is in the HOLD mode. See
OPERATING YOUR THERMOSTAT.
14. Why is the system turning on and off so
frequently (seldom)?
The anticipation setting is too low (high).
To change anticipation settings, see OP-
ERATING YOUR THERMOSTAT.
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34
16. I live in an area where daylight savings
time is observed. How do I change the
thermostat clock twice a year without
affecting thermostat programming?
dead. If you are changing the battery after
seeing a flashing BAT on the display, the
installed battery may be dead. If you re-
movetheoldbatteryandinstallafreshone
within one minute, you should not lose
your thermostat programming. After in-
stalling a new battery, follow the proce-
duresinCHECKYOURPROGRAMMING
to determine whether your programming
was maintained. If the thermostat main-
SYSTEM
To change your clock, follow the instruc-
tions for setting current time and day. See
ENTERING YOUR PROGRAM. Thermo-
statprogrammingisnotaffectedwhenyou
change the clock.
17. Do I have to reprogram my thermostat
after I change the battery?
tainsprogramming,press
untilOFF
HEAT-OFF-COOL-AUTO
is displayed, put the thermostat back on
When the thermostat is on the wall and the
system has power, the thermostat is being
powered by a 24 VAC source. If power is
lost, or if the thermostat is removed from
the wall, the program will be retained for
approximately one minute if there is no
batteryinstalledoriftheinstalledbatteryis
SYSTEM
HEAT-OFF-COOL-AUTO
the wall, press
to select the oper-
RUN
PRGM
ating mode you want, then press
to
start program operation. If the program is
lost, reprogram the thermostat. See PRO-
GRAMMING YOUR THERMOSTAT.
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35
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. 37-5054B
Replaces 37-5054A
9613
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