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OPERATION GUIDE  
1F92W-71  
Multi-stage/Heat Pump Electronic  
Digital Thermostat  
WHITE-RODGERS  
Operator: Save this booklet for future use!  
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About Your New Thermostat . . .  
Your new White-Rodgers Digital Multi-stage/Heat Pump Thermostat uses the technology of a  
solid-state microcomputer to provide precise time/temperature control. This thermostat offers  
you the flexibility to design heating and cooling programs that fit your needs.  
Please read this manual thoroughly before operating or programming your thermostat. If you  
have questions, contact us at the address shown on the back cover of this manual.  
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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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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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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.  
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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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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Other than  
and  
, the buttons are  
Displays the setpoint temperature.  
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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  
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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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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.  
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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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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
11  
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  
AUTOMATICCHANGEOVERYoucan  
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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(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  
LOWBATTERYINDICATORTheword  
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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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  
– AUTO  
For example, if a power outage of three  
hoursoccurs,thecompressorwillbelocked  
out for two hours.  
perature for the time period, press  
ON  
until FAN  
is displayed. To override  
FAN  
– AUTO  
constant fan, press  
displayed.  
until FAN  
is  
ON  
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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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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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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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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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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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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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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  
26  
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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  
.
27  
href="
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  
– AUTO  
6. Press  
to begin program operation.  
COOL, AUTO). Press  
until FAN  
is  
ON  
displayed (automatic cycling).  
YOUR THERMOSTAT IS NOW COM-  
PLETELY PROGRAMMED AND READY TO  
AUTOMATICALLY PROVIDE MAXIMUM  
COMFORT AND EFFICIENCY!  
28  
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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  
29  
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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  
30  
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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  
31  
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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.  
32  
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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.  
33  
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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.  
34  
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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.  
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