White Rodgers Thermostat 1F90W 71 User Manual

OPERATION GUIDE  
1F90W-71  
5 Day/2 Day Electronic  
Digital Thermostat  
WHITE-RODGERS  
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 .................................... 19  
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  
• Separate5-day(weekday)and2-day(week-  
• Compressor short cycle protection  
• Programmable blower control  
• Blower delay in the cooling cycle  
• Audio and visual prompting during opera-  
tion  
• Two hour temperature override  
• Manual program override (HOLD tempera-  
ture)  
end) setback programming  
• Simultaneous heat and cool program stor-  
age  
• Fourseparatetime/temperaturesettingsper  
24-hour period  
• Computed Energy Management Recovery  
(EMR)  
• Automaticchangeover(operator-selectable)  
• "Advance Program" key  
• Armchair programming capability  
• Backlit LCD displays continuous set point,  
time, and room temperature  
• 1.5 volt "AA" Energizer® alkaline battery  
backup  
°F/°C convertibility  
• Keypad lockout and limited temperature  
range (operator-selectable)  
• Temperature range 40° to 99°F  
• Compatible with Remote Sensor (installer-  
selectable)  
• Preprogrammed temperature control  
• Adjustable cycle times  
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4
OPERATING YOUR THERMOSTAT  
Before you begin programming your thermo- The subbase is attached to the wall, but you can  
stat, you should be familiar with its features and remove the thermostat body for easy program-  
with the display and the location and operation ming. To remove the thermostat body from the  
of the thermostat buttons. The information in subbase, grasp the thermostat body and gently  
this section will help you become familiar with pull it straight out from the subbase. To attach  
your new thermostat so that you can easily thethermostatbody, lineupthesixterminalpins  
program it.  
on the upper section of the thermostat back with  
the matching connector on the subbase. Insert  
Your thermostat consists of two parts: the  
thermostat body and the subbase.  
CAUTION  
!
SUBBASE  
Remove power from the system at the  
circuit breaker/fuse box before remov-  
ing or attaching the thermostat body.  
Equipment damage and/or personal in-  
jury could occur.  
THERMOSTAT  
BODY  
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5
these, then gently pivot the thermostat body  
down to connect the three pin connectors on the  
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.  
programming). Fresh batteries will main-  
tain the stored program for approximately a  
year. If power loss is long enough for the  
program to be lost, the thermostat will auto-  
matically return to the factory programmed  
temperatures (64°F heating and 82°F cool-  
ing) when power is restored. You must  
reprogram the thermostat if this happens.  
If the word BATTERY is flashing in the  
display window, the batteries are low and  
should be replaced with fresh "AA" Ener-  
gizer® alkaline batteries.  
PARTS OF THE THERMOSTAT  
The Back of The Thermostat Body  
Turn the thermostat body over. On the back are  
the 3 "AA" Energizer® alkaline batteries and the  
two option switch groups (A and B).  
CAUTION  
!
Before removing thermostat from the  
wall to replace the batteries, remove  
24vAC power from the thermostat at the  
breaker/fuse box.  
1. The "AA" Energizer® alkaline batteries pro-  
videpowertothethermostatwhenthe24vAC  
powerisinterrupted(forexample, whenyou  
remove the thermostat from the wall for  
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6
2. You may adjust the option switches for  
keypad lockout, limited temperature range,  
andautomaticchangeoverfromheattocool  
(see OPERATING FEATURES).  
Batteries  
6-pin Connector  
Other than  
and  
, the buttons are  
locatedbehindthethermostatdoor. Toopenthe  
door, pull the door out from the top, then swing  
it down on its hinges.  
(Group A)  
(Group B)  
On the following pages there are brief descrip-  
tions of the display and the thermostat buttons.  
Option Switches  
3-pin Connector  
BACK OF THERMOSTAT BODY  
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7
5
6
The Display  
The word BATTERY flashes on the display  
when the "AA" alkaline batteries are weak  
and should be replaced. The word BAT-  
TERY is displayed continuously (non-flash-  
ing) when thermostat is running on battery  
power only.  
1
2
Continuouslydisplayssystemmode(HEAT,  
OFF, COOL, AUTO, HOLD). During pro-  
gramming, the program period is displayed  
(MOR, DAY, EVE, or NHT).  
Alternately displays room temperature (F  
denotesdegreesFahrenheitand Cdenotes  
degrees Celsius) and time of day (A de-  
notes AM time and P denotes PM time).  
FAN ON is displayed when the blower is  
operating continuously. FAN AUTO is dis-  
playedduringautomaticfanoperation(when  
theblowercycleswiththeheatingorcooling  
system).  
3
Displays the setpoint temperature.  
4
5 DAY indicates that the displayed program  
is the weekday program. 2 DAY indicates  
that the displayed program is the weekend  
program.  
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8
5
DAY  
FAN AUTO  
TIME  
FWD  
SET  
VIEW  
HOLD  
TEMP  
SYSTEM  
HEAT-OFF-COOL-AUTO  
CLOCK  
PRGM  
TIME  
SET  
DAY  
RUN  
ADV  
FAN  
ON - AUTO  
BACK  
PRGM  
PRGM  
1
2
3
3
2
DAY  
FAN AUTO  
5
DAY  
FAN ON  
BATTERY  
6
4
4
2
5
6
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9
12  
13  
The Thermostat Buttons  
Used to initiate or review thermostat pro-  
gramming.  
7
8
Sets the system mode (HEATing, OFF,  
COOLing, or AUTOmatic changeover).  
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 period.  
14  
15  
Used to manually override programming to  
holdataselectedtemperature(whenHOLD  
is displayed).  
9
Runs display forward or backward through  
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 program).  
TIME  
FWD  
TIME  
10  
11  
Used with the  
and  
buttons to  
BACK  
set current time and day of the week.  
16  
17  
(Red arrow) Raises temperature setting  
(99°F or 37°C maximum).  
Used during programming to set the day of  
the week to be programmed. Also used in  
(Blue arrow) Lowers temperature setting  
(40°F or 4°C minimum).  
SET  
conjunction with the  
button to enter  
CLOCK  
anticipation setting mode.  
18 Theredindicatorlightglowswheneverheat-  
ing, cooling, or fan are in operation.  
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10  
17 16  
18  
5
DAY  
FAN AUTO  
TIME  
FWD  
SET  
VIEW  
HOLD  
TEMP  
SYSTEM  
HEAT-OFF-COOL-AUTO  
7
8
CLOCK  
PRGM  
TIME  
SET  
DAY  
RUN  
ADV  
FAN  
ON - AUTO  
BACK  
PRGM  
PRGM  
10  
11 12  
14 15  
13  
9
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11  
temperature of 62°F, and that during the  
next program 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 tempera-  
ture is reached by about 6:00 AM.  
OPERATING FEATURES  
Now that you are familiar with the thermostat  
display and buttons, read the following informa-  
tion to learn about the many features of the  
thermostat.  
This feature is controlled by Group B option  
switch#3. ToenabletheEMRfunction,first  
you must move option switch #3 (located on  
the back of the thermostat body) to the OFF  
position, if it has not already been done. To  
do this, turn off 24v AC power to the thermo-  
stat. Then remove the thermostat body  
from the wall. Check the position of switch  
#3 (the last switch on the right). If it is OFF  
(down), simply put the thermostat back on  
the wall and restore 24v AC power. If the  
switch is ON (up), remove the battery, then  
COMPUTED ENERGY MANAGEMENT  
RECOVERY (EMR) — The thermostat’s  
microcomputer can be set to automatically  
calculate the time it will take to change the  
temperature to the next program setting.  
Then the thermostat will activate the heat-  
ing or cooling system to change the tem-  
perature so that the desired temperature is  
reached at the beginning of the next pro-  
gram period. As an example of this feature,  
assume that you have programmed your  
thermostat to provide an overnight heating  
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12  
use a pencil or small screwdriver to move  
the switch to the OFF position (see figure  
below). Leavethebatteryoutofthethermo-  
stat for at least two minutes, to allow the  
thermostattoresetitself. SeeAUTOMATIC  
CHANGEOVER to determine proper posi-  
tions of Group B option switches #1 and #2.  
system from heating to cooling as needed.  
(If you have a heating only system, Group B  
option switch #1 should be OFF and option  
switch #2 should be ON.) To enable auto-  
matic changeover, you must move Group B  
option switch #1 to the ON position and  
switch #2 to the OFF position. Turn off 24v  
AC power to the thermostat. Then remove  
the thermostat body from the wall. Check  
the position of Group B option switches #1  
and #2 (the first two switches on the left). If  
they are in the correct positions, simply put  
the thermostat back on the wall and restore  
24v AC power. If the switches are not  
correctly positioned, remove the battery,  
then use a pencil or small screwdriver to  
move the switches to the correct positions  
(seefigureonnextpage). Leavethebattery  
out of the thermostat for at least two min-  
EMR (ON)  
ON  
Group B  
Option  
Switches  
1
2
3
Switch #1 (see AUTOMATIC CHANGEOVER)  
Switch #2 (see AUTOMATIC CHANGEOVER)  
Switch #3 OFF  
AUTOMATIC CHANGEOVER — If you  
have a heating/cooling system, you can set  
the thermostat to automatically switch the  
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13  
utes, to allow the thermostat to reset itself.  
Replace the battery, reprogram the thermo-  
NOTE  
stat, if necessary, put the thermostat back In the AUTO mode, the thermostat will not allow  
on the wall, and restore 24v AC power. To the temperature separation between the high-  
setthethermostatforautomaticchangeover est heat setting and the lowest cool setting to be  
less than 1°F. For example, if the highest heat  
SYSTEM  
HEAT-OFF-COOL-AUTO  
after programming, press  
to set the  
settingis75°F, thelowestcoolsettingcannotbe  
below 77°F (see diagram below).  
thermostat to AUTO (the setpoint tempera-  
ture display is blank in the AUTO mode).  
The system will now automatically switch  
betweenheatingandcooling,dependingon  
the actual room temperature.  
79  
78  
77  
COOLING TEMPERATURES  
76 DEAD BAND 1°F  
75  
74  
73  
HEATING TEMPERATURES  
Automatic Changeover  
ON  
For manual changeover, Group B option  
switches #1 and #2 should be in the OFF  
position.  
Group B  
Option  
Switches  
1
2
3
Switch #1 ON  
Switch #2 OFF  
TWO HOUR TEMPERATURE OVER-  
RIDE — Press  
or  
until the  
Switch #3 (see Energy Management Recovery)  
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14  
display shows the temperature you want.  
The thermostat will override current pro-  
gramming and keep the room temperature  
at the selected temperature for two hours.  
After two hours, the thermostat will auto-  
matically revert to the program.  
"ADVANCE PROGRAM" KEY — Press  
ADV  
to change the thermostat to the next  
PRGM  
program period. This will temporarily over-  
ride the program, until the next program  
period begins (for example, pressing this  
key while in the DAY program will advance  
the thermostat to the EVE program, which  
will remain in effect until the NHT program  
begins).  
HOLD TEMPERATURE — The thermostat  
can hold any temperature within its range  
for an indefinite period, without reverting to  
HOLD  
the program. Press  
displayed. Then choose the desired hold  
temperature by pressing or  
. HOLD will be  
TEMP  
TIME  
°F/°C CONVERTIBILITY — Press  
FWD  
TIME  
.
and  
at the same time until the tem-  
BACK  
The thermostat will hold the room tempera-  
ture at the selected setting until you press  
RUN  
perature display is in °C (Celsius). To  
display °F, repeat the process.  
ADJUSTABLE HEATING AND COOLING  
CYCLE TIMES (ANTICIPATION) — If the  
heating/cooling system is turning on and off  
too often (short cycles) or not often enough  
to start program operation again.  
PRGM  
Thisfeatureisidealforenergyconservation  
when the building is unoccupied for an ex-  
tended period of time.  
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15  
(long cycles), you may want to adjust the  
anticipation setting.  
the adjustment is sufficient. If the heat  
TIME  
cyclesaretooshort,press  
toincrease  
FWD  
CAUTION  
!
the cycle time. If the heat cycles are too  
TIME  
A cooling anticipation setting of less than  
10maycausedecreasedcompressorlife.  
long, press  
to decrease the cycle  
BACK  
time. To set cooling anticipation, press  
SET  
SET  
DAY  
and  
at the same time again.  
SET  
CLOCK  
To adjust heat anticipation, press  
CLOCK  
The display will show COOL 14 (factory  
preprogrammed cooling anticipation). You  
may select any anticipation setting from 4 to  
SET  
and  
atthesametime. Thedisplaywill  
DAY  
show HEAT 5 (this is the factory prepro-  
grammedheatinganticipationsetting). You  
may select any anticipation setting from 2 to  
40 (note that for hydronic systems, a  
minimum anticipation setting of 15 is  
recommended). Whenever adjusting an-  
ticipation, increase or decrease the dis-  
played number by only one or two digits,  
then let the system run for a while to see if  
TIME  
FWD  
TIME  
40. Use the  
and  
buttons to  
to return  
BACK  
RUN  
PRGM  
adjust anticipation. Press  
to your program.  
LOW BATTERY INDICATOR — The word  
BATTERY will flash on the display if the  
"AA" alkaline batteries are low and should  
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16  
be replaced. The word BATTERY will be  
displayedcontinuously(non-flashing)when  
24v AC power is not being supplied to the  
thermostat and the thermostat is operating  
on battery power only.  
cause a time delay in COOL:  
a) Return of power after a power outage.  
SYSTEM  
HEAT-OFF-COOL-AUTO  
b) Pressing  
to change operating  
modes.  
c) Pressing  
AUDIO PROMPTING — Each time you  
press a button, the thermostat will beep.  
BACKLIT DISPLAY — When you press  
any button on the thermostat, the display is  
lit for approximately eight seconds.  
SYSTEM INDICATOR LIGHT — The red  
lightontheupperrightpartofthethermostat  
indicatessystemoperation(seePARTSOF  
THE THERMOSTAT).  
COMPRESSORSHORTCYCLEPROTEC-  
TION — To protect your compressor from  
potential damage due to rapid cycling, this  
thermostat has a built-in delay of 5 minutes  
between cooling cycles. The following may  
, creating a call for COOL  
too soon after a previous call.  
TOTAL KEYPAD LOCKOUT — When  
Group A option switch #1 is in the total  
keypad lockout position (ON), programs  
cannot be altered and all buttons are dis-  
abled.  
NOTE  
Programming should be completed and batter-  
ies should be installed before changing Group  
A option switches #1 or #2.  
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17  
peratures. To enable limited temperature  
range, move Group A switch #1 to the OFF  
position and switch #2 to the ON position  
(see figure below). To disable limited tem-  
perature range, move switch #2 to the OFF  
position (see TOTAL KEYPAD LOCKOUT  
to determine the correct position of option  
switch #1).  
Total Keypad Lockout  
ON  
Group A  
Option  
Switches  
1
2
Switch #1 ON  
Switch #2 OFF  
Toenabletotalkeypadlockout,moveGroup  
Aoptionswitch#1toON(seefigureabove).  
To disable total keypad lockout, move op-  
tion switch #1 to OFF.  
LIMITED TEMPERATURE RANGE —  
When Group A option switch #1 is in the  
OFF position and option switch #2 is in the  
ON position, the heating and cooling tem-  
peratures may be changed using the  
NOTE  
Programming should be completed and batter-  
ies should be installed before changing Group  
A option switches #1 or #2.  
Limited Temperature Range  
ON  
Group A  
Option  
Switches  
and  
buttons, but the temperatures  
1
2
maynotbesettoexceedanyprogrammed  
Switch #1 OFF  
Switch #2 ON  
maximum heating or minimum cooling tem-  
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18  
PROGRAMMING YOUR THERMOSTAT  
Now you are ready to program your thermostat.  
This section will help you plan your thermostat's  
program to meet your needs.  
PLANNING FOR YOUR NEEDS  
First, answer the following questionsto help you  
decide what your needs are. If you are using the  
thermostatforacommercialapplication(astore,  
officebuilding,etc.),answerquestions1through  
4. If you are using the thermostat in your home,  
answer questions 5 through 8.  
For maximum comfort and efficiency, keep the  
following guidelines in mind when planning your  
program.  
• When heating (cooling) your building, pro-  
gramthetemperaturestobecooler(warmer)  
when the building is vacant or during peri-  
ods of low activity.  
FOR COMMERCIAL APPLICATIONS:  
1a. What time does the first person arrive at the  
building in the morning?  
• During early morning hours, the need for  
cooling is usually minimal.  
b. What temperature should the building be at  
this time? (heating? cooling?) These will be  
your MOR (morning) temperature settings.  
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19  
2a. What time do the building occupants reach IN YOUR HOME:  
amaximumactivitylevel(usinglights,equip- 5a. What time does the first person get up in the  
ment, meeting rooms, etc.)?  
b. What temperature should the building be at  
this time? These will be your DAY tempera-  
ture settings.  
morning?  
b. What temperature should the house be at  
this time? These will be your MOR (morn-  
ing) temperature settings.  
3a. What time do the building occupants reach 6a. What time does the last person leave the  
a minimum activity level (limited personnel  
in building)?  
b. What temperature should the building be at  
thistime? ThesewillbeyourEVE (evening)  
temperature settings.  
4a. What time does the building become va-  
cant?  
b. What temperature should the building be at  
this time? These will be your NHT (night)  
temperature settings.  
house in the morning?  
b. What temperature should the house be at  
this time? These will be your DAY tempera-  
ture settings.  
7a. What time does the first person arrive home  
in the evening?  
b. What temperature should the house be at  
thistime? ThesewillbeyourEVE (evening)  
temperature settings.  
8a. What time does the last person go to bed at  
night?  
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20  
b. What temperature should the house be at  
this time? These will be your NHT (night)  
temperature settings.  
NOTE  
To operate properly in the AUTO mode, there  
must be a minimum 1°F separation between  
the highest heat temperature and the lowest  
cool temperature (see diagram below).  
Now look at the factory preprogrammed times  
and temperatures shown on the following page.  
If this program will suit your needs, simply press  
RUN  
79  
78  
77  
COOLING TEMPERATURES  
to begin running the factory preset pro-  
PRGM  
76 DEAD BAND 1°F  
75  
gram.  
74  
73  
HEATING TEMPERATURES  
If you want to change the preprogrammed times  
and temperatures, do the following.  
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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21  
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  
mayusethesameheatingandcoolingtempera-  
tures for consecutive time periods. You can  
choose start times, heating temperatures, and  
cooling temperatures independently for both  
weekday and weekend programs (for example,  
youmayselect5:00AMand70° astheweekday  
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 peri-  
ods,andthetemperaturesyouwantduringeach  
period. You may also want to look at the sample  
program table to get an idea of how the thermo-  
stat 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  
entering cooling programming). Fresh "AA"  
Energizer® alkaline batteries must be installed  
to perform off-wall programming. BE SURE  
SYSTEM SWITCH IS SET TO OFF POSITION  
BEFORE REATTACHING THERMOSTAT TO  
SUBBASE!  
NOTE  
You cannot program the thermostat with the  
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22  
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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23  
SAMPLE  
Heating/Cooling Schedule Plan  
WEEKEND (2 DAY)  
WEEKDAY (5 DAY)  
Start  
Time  
Start  
Time  
Temperature  
68°F  
Temperature  
68°F  
MOR HEAT  
DAY HEAT  
EVE HEAT  
NHT HEAT  
MOR COOL  
DAY COOL  
EVE COOL  
NHT COOL  
5:30 AM  
7:00 AM  
11:00 AM  
6:00 PM  
11:30 PM  
7:00 AM  
12:30 PM  
6:00 PM  
11:30 PM  
8:00 AM  
5:00 PM  
10:30 PM  
6:30 AM  
2:00 PM  
5:00 PM  
10:30 PM  
65°F  
70°F  
65°F  
76°F  
78°F  
72°F  
78°F  
70°F  
70°F  
65°F  
76°F  
74°F  
72°F  
78°F  
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24  
Set Current Time and Day  
SET  
DAY  
5. Press  
once. Thedisplaywillshowthe  
day of the week as an abbreviation (MO for  
Monday, TU for Tuesday, etc.).  
SET  
1. Press  
once. The display will show  
CLOCK  
minutes only.  
EXAMPLE:  
TIME  
FWD  
TIME  
6. Press and hold either  
or  
until  
BACK  
you reach the current day of the week.  
TIME  
FWD  
TIME  
RUN  
2. Press and hold either  
or  
until  
BACK  
7. Press  
once. Thedisplaywillshowthe  
PRGM  
you reach the correct minutes.  
correct time and room temperature alter-  
nately.  
SET  
3. Press  
once. The display window will  
CLOCK  
show the hour only.  
EXAMPLE:  
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  
TIME  
FWD  
TIME  
4. Press and hold either  
or  
until  
BACK  
you reach the correct hour and AM/PM  
designation (AM begins at midnight; PM  
begins at noon).  
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25  
This display window shows that for the  
weekday MOR period, the start time is 5:00  
AM, and 70° is the programmed tempera-  
ture (this example reflects factory prepro-  
gramming).  
VIEW  
until you are at the point where you  
PRGM  
stopped programming. Then you may continue  
to enter your programs normally. If you want to  
stop programming at any time, simply press  
RUN  
to resume program operation.  
3. To change the displayed start time to your  
PRGM  
selected start time for weekday MOR heat  
TIME  
FWD  
TIME  
SYSTEM  
HEAT-OFF-COOL-AUTO  
program, press  
or  
until your  
BACK  
1. Press  
2. Press  
until HEAT is displayed.  
selectedtimeappears. Thetimewillchange  
in 15 minute increments.  
VIEW  
once. 5 DAY (indicating week-  
PRGM  
4. Press  
or  
until you reach your  
day 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 programmed tempera-  
ture.  
selected weekday MOR heating tempera-  
ture.  
5. If you want the fan to run continuously  
FAN  
during this period, press  
until PRG  
ON – AUTO  
FAN is displayed.  
EXAMPLE:  
5 DAY  
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26  
Enter Cooling Program  
VIEW  
6. Press  
. The currently programmed  
PRGM  
starttimeandheatingtemperatureforweek-  
day DAY will be displayed.  
CAUTION  
!
7. Repeat steps 3 through 5 to select the start  
time and heating temperature for the week-  
day DAY program.  
8. Repeat steps 3 through 7 for the weekday  
EVE and NHT heating programs.  
If outside temperature is below 50°F, we  
recommend that you remove the ther-  
mostat from the wall before proceeding  
withthefollowingstepstoprogramcool-  
ing temperatures. Personal injury or  
property damage may occur due to air  
conditionercompressorslugging. Fresh  
"AA" Energizer® alkaline batteries must  
be installed to perform off-wall program-  
ming. Programming away from the wall  
should prevent accidental compressor  
operation. BE SURE SYSTEM SWITCH  
IS SET TO OFF POSITION BEFORE RE-  
ATTACHINGTHETHERMOSTATTOTHE  
SUBBASE!  
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).  
10. When you have completed entering your  
RUN  
heating program, press  
.
PRGM  
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27  
RUN  
SYSTEM  
HEAT-OFF-COOL-AUTO  
1. Press  
until COOL appears.  
3. Press  
4. Press  
.
PRGM  
2. Followtheprocedureforenteringyourheat-  
ing program, using your selected cooling  
times and temperatures.  
SYSTEM  
HEAT-OFF-COOL-AUTO  
until COOL is displayed.  
5. Repeat step 2 to check cooling tempera-  
tures.  
RUN  
CHECK YOUR PROGRAMMING  
6. Press  
to begin program operation.  
PRGM  
Follow these steps to check your thermostat  
programming one final time before beginning  
thermostat operation.  
YOURTHERMOSTATISNOWCOMPLETELY  
PROGRAMMEDANDREADYTOAUTOMATI-  
CALLYPROVIDEMAXIMUMCOMFORTAND  
EFFICIENCY!  
SYSTEM  
1. Press  
until HEAT is displayed.  
HEAT-OFF-COOL-AUTO  
SYSTEM  
HEAT-OFF-COOL-AUTO  
VIEW  
Press  
until OFF is displayed. Reattach  
2. Press and hold  
to view the heating  
PRGM  
thermostat to subbase. Turn on power to the  
period times and temperatures in sequence  
for weekday, then weekend MOR, DAY,  
EVE, and NHT program periods.  
SYSTEM  
HEAT-OFF-COOL-AUTO  
system. Thenpress  
toselecttheopera-  
tion mode you want (HEAT, COOL, AUTO).  
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28  
FAN  
ON – AUTO  
Press  
until FAN AUTO is displayed  
(automatic cycling).  
QUESTIONS AND ANSWERS  
1. How can I permanently change a part of  
my program?  
you may select the same weekday EVE  
cooling temperature as you did for weekday  
DAY, which means the temperature will not  
change when the EVE period begins. See  
PROGRAMMING YOUR THERMOSTAT.  
VIEW  
Press  
until you reach the time/tem-  
PRGM  
perature schedule you want. Then press  
TIME  
FWD  
TIME  
3. How can I finish my programming if the  
display has already changed to time/  
temperature?  
or  
and  
and  
to  
BACK  
change the program. See PROGRAM-  
MING YOUR THERMOSTAT.  
During programming, if no buttons are  
pressed for five minutes, the thermostat will  
enter the HOLD mode and maintain a con-  
stant temperature. The display will change  
to the time/temperature mode. To resume  
2. How can I have no change in tempera-  
ture from one time period to another?  
Simply select the same temperature for  
eachconsecutivetimeperiod. Forexample,  
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29  
If fresh "AA" Energizer® alkaline batteries  
are installed, the program will be main-  
tained for about one year with no 24vAC  
power present to the thermostat. See OP-  
ERATING YOUR THERMOSTAT.  
VIEW  
programming, press  
until you return  
PRGM  
to the point where you stopped program-  
ming. Then you may continue to program  
the thermostat normally. If you want to stop  
RUN  
programming at this point, press  
to  
5. Why can’t I program the thermostat in  
the AUTO mode?  
PRGM  
start the normal program function. See  
The thermostat can only be programmed in  
the HEAT and COOL modes. See PRO-  
GRAMMING YOUR THERMOSTAT.  
PROGRAMMING YOUR THERMOSTAT.  
4. What happens if the electricity goes off  
or is manually shut off?  
6. What can cause the thermostat display  
to freeze or go blank?  
If you have not installed 3 "AA" alkaline  
batteries, the display will go blank and the  
program will be lost in approximately one  
minute. When electricity is restored, the  
clock will reset itself to 12:00 PM (noon) and  
the thermostat will maintain a heating tem-  
perature of 64°F and a cooling temperature  
of 82°F until you reenter your program.  
Setpoint temperature will not be displayed.  
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 dis-  
charge is probably the cause.  
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30  
During periods of low humidity (especially  
during cold weather), you may feel or see a  
spark discharge when you touch the ther-  
mostat. 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 bat-  
tery. Thethermostatwillreverttothefactory  
preset program until you reprogram the  
thermostat. If you don’t want to reprogram  
SYSTEM  
To prevent further static discharge prob-  
lems, touch another object to release static  
build-up before touching the thermostat.  
See OPERATING YOUR THERMOSTAT.  
7. Why won’t the setpoint temperature go  
to the temperature I want?  
In the AUTO mode, the highest heating  
setpoint temperature you select must be at  
least 1°F lower than the lowest cooling  
setpoint temperature you select (for ex-  
ample, if 70°F is your lowest selected cool-  
ing temperature, you cannot select a heat-  
ing temperature any higher than 68°F). If  
such a conflict exists, you must set the  
lowest cooling temperature higher in order  
to set the heating temperature higher. To  
set a lower cooling temperature, you must  
select a lower heating temperature. See  
PROGRAMMING YOUR THERMOSTAT.  
the thermostat immediately, press  
HEAT-OFF-COOL-AUTO  
until OFF is displayed and replace the ther-  
RUN  
mostat on the wall. Then press  
to  
PRGM  
begin the factory preset program. Or you  
may reprogram the thermostat, then re-  
place it on the wall.  
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31  
8. The display is flashing BATTERY. What  
does this mean?  
callingforcool. Waitabout5minutesforthe  
compressor lockout to expire. If the system  
isstillnotrunning,readthecautionarystate-  
ment below. Then, if conditions permit,  
The "AA" batteries installed in the thermo-  
stat are low and should be replaced with  
fresh"AA"Energizer® alkalinebatteries. See  
OPERATING YOUR THERMOSTAT.  
use the  
button to move the tempera-  
ture below the setpoint temperature. See  
OPERATING YOUR THERMOSTAT.  
9. The display shows a continuous (non-  
flashing) BATTERY. What does this  
mean?  
CAUTION  
!
If the outside temperature is below 50°F,  
DONOTusethe buttontomovethe  
temperaturebelowthesetpointtempera-  
ture. Property damage may result due to  
compressor slugging.  
The thermostat is not being supplied with  
24vAC power. The thermostat is operating  
on battery power alone. See OPERATING  
YOUR THERMOSTAT.  
10. Why won’t the compressor turn on, even  
though the thermostat display is func-  
tioning normally?  
11. Why doesn’t the temperature change at  
the time I programmed?  
Either the compressor lockout feature is in  
operation or the thermostat is not currently  
There may be a number of causes for this  
situation. The following are primary rea-  
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32  
sons.  
ating; wait about 5 minutes for system to  
beginrunning. SeeOPERATINGYOUR  
THERMOSTAT.  
The EMR function is operating. The  
EMR function will automatically bring on  
the system automatically to bring the  
temperature to the selected level by the  
beginning of the next program period.  
See OPERATING YOUR THERMO-  
STAT.  
12. Why does the blower fan keep running  
after the system has turned off?  
You have programmed the fan to run  
continuously during this period. See  
PROGRAMMING YOUR THERMO-  
STAT.  
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.  
You have programmed the incorrect day  
or time. Check your programming (be  
sure that the times you programmed are  
correct AM or PM times). See PRO-  
GRAMMING YOUR THERMOSTAT.  
The thermostat is in the HOLD mode.  
RUN  
13. Why is the system turning on and off so  
frequently (seldom)?  
Press  
to start program operation.  
PRGM  
See OPERATING YOUR THERMO-  
STAT.  
The compressor lockout feature is oper-  
The anticipation setting is too low (high). To  
change anticipation settings, see OPER-  
ATING YOUR THERMOSTAT.  
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33  
14. Between heating and cooling seasons, I 15. I live in an area where daylight savings  
want to turn my system off. Can I do this  
without affecting my thermostat pro-  
gramming?  
time is observed. How do I change the  
thermostat clock twice a year without  
affecting thermostat programming?  
To change your clock, follow the instruc-  
tions for setting current time and day. See  
ENTERING YOUR PROGRAM. Thermo-  
stat programming is not affected when you  
change the clock.  
Any time you wish to turn your system off,  
SYSTEM  
HEAT-OFF-COOL-AUTO  
simplypress  
untilthedisplayshows  
OFF. This will not affect your thermostat’s  
programming in any way. To turn the sys-  
SYSTEM  
tem back on, press  
until HEAT,  
16. Do I have to reprogram my thermostat  
after I change the batteries?  
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.  
When the thermostat is on the wall and the  
system has power, the thermostat is being  
powered by a 24v AC source. If power is  
lost, or if the thermostat is removed from the  
wall, the program will be retained for ap-  
proximately one minute if there are no  
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34  
batteriesinstalledoriftheinstalledbatteries  
are dead. If you are changing the batteries  
after seeing a flashing BATTERY on the  
display, theinstalledbatteriesmaybedead.  
If you remove the old batteries and install  
fresh ones within one minute, you should  
not lose your thermostat programming. Af-  
terinstallingnewbatteries, followtheproce-  
dures in CHECK YOUR PROGRAMMING  
to determine whether your programming  
was maintained. If the thermostat main-  
SYSTEM  
HEAT-OFF-COOL-AUTO  
tainsprogramming,press  
untilOFF  
is displayed, put the thermostat back on the  
SYSTEM  
HEAT-OFF-COOL-AUTO  
wall, press  
to select the operating  
RUN  
mode you want, then press  
to start  
PRGM  
program operation. If the program is lost,  
reprogramthethermostat. SeePROGRAM-  
MING YOUR THERMOSTAT.  
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35  
If you need further information on programming or operation, write to:  
White-Rodgers Division, Emerson Electric Co.  
9797 Reavis Road  
St. Louis, MO 63123  
Attn: Technical Service Department  
Part No. 37-5088A  
9139  
R
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