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90 Series Blue Single Stage Thermostat with  
Automatic Heat/Cool Changeover Option  
Installation and Operating Instructions for Model:  
Save these instructions for future use!  
Model  
Programming Choices  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS  
CAREFULLYBEFOREINSTALLINGOROPERATINGTHIS  
CONTROL COULD CAUSE PERSONAL INJURY AND/OR  
PROPERTY DAMAGE.  
1F97-1271 Non-Programmable 5/1/1 Day 7 Day  
APPLICATIONS  
1F97-1271 Touchscreen Thermostat  
THERMOSTAT APPLICATION GUIDE  
Description  
Heat Pump (No Aux. or Emergency Heat)  
Heat Pump (with Aux. or Emergency Heat)  
Standard Heat & Cooling Systems  
Systems requiring more than One Call for Heat or Cool  
Standard Heat Only Systems  
Yes  
No  
Yes  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
No  
Millivolt Heat Only Systems – Floor or Wall Furnaces  
Standard Central Air Conditioning  
Gas or Oil Heat  
Electric Furnace  
Hydronic (Hot Water) Zone Heat – 2 Wires  
Hydronic (Hot Water) Zone Heat – 3 Wires  
SPECIFICATIONS  
Electrical Rating Single Stage:  
Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC  
Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC  
Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 A per terminal, 1.5A maximum all terminals combined  
Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 32°C)  
Rated Differential (Single Stage) . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F  
Operating Ambient . . . . . . . . . . . . . . . . . . . . . . . . . 32° to +105°F (0 to +41°C)  
Operating Humidity . . . . . . . . . . . . . . . . . . . . . . . . 90% non-condensing max.  
Shipping Temperature Range . . . . . . . . . . . . . . . . -4 to +150°F (-20 to +65°C)  
Dimensions Thermostat . . . . . . . . . . . . . . . . . . . . . 4.6"H x 5.9"W x 1.2"D  
ATTENTION: MERCURY NOTICE  
This product does not contain mercury. However, this  
product may replace a product that contains mercury.  
CAUTION  
To prevent electrical shock and/or equipment dam-  
age, disconnect electric power to system at main fuse  
or circuit breaker box until installation is complete.  
!
Mercury and products containing mercury must not be  
discarded in household trash. Do not touch any spilled  
mercury. Wearing non-absorbent gloves, clean up any  
spilled mercury and place in a sealed container. For proper  
disposal of a product containing mercury or a sealed  
container of spilled mercury, place it in a suitable shipping  
container and send it to:  
Index  
Installation  
Page  
2
2
3
4
6
6
8
Wiring Connections  
Thermostat Quick Reference  
Installer Configuration Menu  
Operating Your Thermostat  
Programming  
White-Rodgers  
2895 Harrison Street  
Batesville AR 72501  
Troubleshooting  
PART NO. 37-6664B  
Replaces 37-6664A  
0616  
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INSTALLATION  
6. Push excess wire into wall and plug hole with a fire re-  
sistant material (such as fiberglass insulation) to prevent  
drafts from affecting thermostat operation.  
7. Carefully line the thermostat up with the base and snap  
into place.  
WARNING  
!
Thermostat installation and all components of the  
control system shall conform to Class II circuits per  
the NEC code.  
Battery Location  
Remove Old Thermostat  
2 "AA" alkaline batteries are included in the thermostat at  
the factory with a battery tag to prevent power drainage.  
Remove the battery tag to engage the batteries.  
To replace batteries, set system to OFF, remove thermostat  
from wall and install the batteries in the rear along the top of  
the thermostat (see Figure 1).  
A standard heat/cool thermostat consists of three basic parts:  
1. The cover, which may be either a snap-on or hinge type.  
2. The base, which is removed by loosening all captive screws.  
3. The switching subbase, which is removed by unscrewing  
the mounting screws that hold it on the wall or adapter  
plate. Before removing wires from old thermostat,  
label each wire with the terminal designation from  
which it was attached. Disconnect the wires from the old  
thermostat one at a time. Do not let wires fall back into  
the wall.  
Figure 1 – Thermostat base and rear view of thermostat  
Mounting  
Hole  
Mounting  
Hole  
Installing New Thermostat  
1. Pull the thermostat body off the thermostat base. Forcing  
or prying on the thermostat will cause damage to the unit.  
2. Place base over hole in wall and mark mounting hole  
Place Level  
across Mounting Tabs  
(for appearance only)  
Place Level  
across Mounting Tabs  
(for appearance only)  
locations on wall using base as a template.  
3. Move base out of the way. Drill mounting holes. If you  
are using existing mounting holes and the holes drilled  
are too large and do not allow you to tighten base snug-  
ly, use plastic screw anchors to secure the base.  
2 "AA" Batteries  
4. Fasten base snugly to wall using mounting holes shown  
in Figure 1 and two mounting screws. Leveling is for  
appearance only and will not affect thermostat operation.  
5. Connect wires to terminal block on base using  
appropriate wiring schematic (see Figures 2 & 3).  
WIRING CONNECTIONS  
Refer to equipment manufacturers' instructions for specific  
system wiring information. After wiring, see CONFIGURA-  
TION section for proper thermostat configuration.  
Wiring diagrams shown are for typical systems and describe  
the thermostat terminal functions.  
TERMINAL DESIGNATION DESCRIPTIONS  
Terminal Designation  
Description  
Terminal Designation  
Description  
W
G
. . . . . . . . . Heat Relay  
. . . . . . . . . Fan Relay  
L . . . . . . . . . . Heat pump malfunction indicator for  
systems with malfunction connection  
RH . . . . . . . . . Power for Heating  
RC . . . . . . . . . Power for Cooling  
O
B
Y
. . . . . . . . . Changeover valve for heat pump energized  
constantly in cooling  
. . . . . . . . . Changeover valve for heat pump energized  
constantly in heating  
C
. . . . . . . . . Common wire from secondary side of cooling  
system transformer or heat only system transformer  
. . . . . . . . . Compressor Relay  
Figure 2 –  
Two Transformer System  
CLASS II  
Figure 3 – Single Transformer System  
TRANSFORMER  
HEATING  
System  
Malfunction  
Switch  
System  
Malfunction  
Switch  
Heat  
NEUTRAL  
W
Relay  
LINE IN  
24VAC  
Low  
Low  
Optional (Heat Pump)  
Optional (Heat Pump)  
Malfunction Indicator  
Voltage  
System  
Power  
Voltage  
System  
Power  
L
O
B
L
O
B
HOT  
Malfunction Indicator  
Heat  
W
Relay  
Changeover  
Fan  
Changeover  
G
Energized in Cooling  
Relay  
Valve Cooling  
Changeover  
Changeover  
*
Single transformer heat and cool  
systems require a jumper from  
RC to RH for heat only systems.  
Attach power to RH. For cool only  
attach power to RC.  
RH  
Energized in Heating  
Valve Heating  
Fan  
G
Relay  
Compressor  
Relay  
*
Compressor  
Contactor  
RC  
C
Y
Y
RH  
Remove  
Jumper  
RC  
C
Optional 24VAC  
Common  
NOTE: If continuous backlight or hardwired power  
input are desired but do not function in both HEAT  
and COOL modes, cut the heating transformer 24V  
wires and tape off. Connect the neutral circuit  
disconnected from the heating transformer to the  
neutral circuit of the cooling transformer. Disconnect  
the wire to the RH terminal and install a jumper  
between RH and RC. Depending on the system  
requirements, replace the cooling transformer with a  
75VA class II transformer if needed.  
Connection  
24 Volt  
Common  
LINE IN  
24 Volt  
Hot  
Optional  
Common  
CLASS II  
TRANSFORMER  
HOT  
24VAC  
NEUTRAL  
Connection  
LINE IN  
NOTE: Heat Pump without Aux: If using L for MALF indicator, C  
must be connected. Terminals W and Y must be jumpered and CR  
HEAT must be selected to SL in Configuration Menu item 6.  
CLASS II  
TRANSFORMER  
COOLING  
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THERMOSTAT QUICK REFERENCE  
Home Screen Description  
Figure 4 – Home Screen Display  
Room Temperature and Setting Temperature  
(flashes when compressor is in 5 minute lockout)  
Time and Day  
System button for selecting  
Heat/Off/Cool or Auto (Heat/Cool)  
Temperature Up/Down  
Indicating the current power level  
Fan (Auto/On)  
of the 2 "AA" batteries.  
Full power remaining.  
Half power remaining.  
Note: If  
is displayed, the  
thermostat is battery powered.  
When battery power remaining  
Change  
The batteries should  
be replaced at this time.  
is approximately half,  
will  
Menu for Cleaning, Programming  
and Setting Time  
be displayed. If the home is  
going to be unoccupied for an  
extended period (over 3 months)  
Stage 1  
Indicates when thermostat is  
calling for Heat or Cool  
and  
is displayed, the  
batteries should be replaced  
before leaving.  
Figure 5 – Programming & Configuration Items  
11  
10  
Programming and Configuration Items  
Displays and "Keypad Lockout" when in keypad  
lockout mode.  
1
9
Displays and "Temperature Limit" and "Keypad  
Lockout" when limited range is activated and locked.  
Displays only "Temperature Limit" when limited range  
is activated.  
1
8
14  
2
13  
Indicates period of day being programmed.  
RUN SCHEDULE (run program) button.  
SET TIME button or HOLD temperature button.  
12  
2
3
4
3
Displays "Change Filter" when the system has run  
for the programmed filter time period as a reminder  
to change or clean your filter. Displays "Humidifier  
Pad" when the system has run for the programmed  
filter time period as a reminder to change or clean your  
humidifier pad.  
5
5
4
7
6
The words "Hold At" are displayed when the thermo-  
stat is in the HOLD mode. "Temporary Hold At" is  
displayed when the thermostat is in a temporary HOLD  
mode.  
11  
12  
COPY button or INSTALLER CONFIG button.  
6
7
CLEAN DISPLAY button allows 30 seconds to wipe off  
the display or ADVANCE DAY button for programming.  
"Call For Service" indicates a fault in the heating/  
cooling system. It does not indicate a fault in the  
thermostat.  
Used in programming to set time and in configuration  
menu to change selections.  
8
9
"Stage 1" indicates when heating or cooling stage is  
13  
14  
"Hold Until" indicates the time when a temporary hold  
period will end.  
energized.  
"Copy" indicates the copy program feature is being  
used during programming.  
"Hours" and "Days" displays during steps in installer  
configuration.  
10  
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INSTALLER/CONFIGURATION MENU  
To enter the menu: Press the Menu button. Press and hold for 5 seconds the Installer Config button this displays menu item  
#1 in the table below. Press  
change a menu item.  
to advance to the next menu item or  
to return to a previous menu item. Press  
or  
to  
CONFIGURATION MENU  
Press or  
Non-  
Program- Press  
mable  
Displayed  
(Factory  
Default)  
Menu  
Reference  
Number  
7
Day  
to select from  
listed options  
Button  
Comments  
1
1
(GAS)  
ELE  
GAS setting: furnace controls blower.  
ELE setting: thermostat controls blower.  
Selects programming option.  
1
2
3
4
2
* NA  
3
Days (7)  
PS (4)  
5, 0  
2
3
4
2
Selects programming periods per day.  
Cool, Off,  
Cool, Off, Heat,  
Selects system switch configuration for heat and cool with  
Heat, Auto Off, Heat, Cool, Off Auto changeover, Heat & Cool, Heat Only or Cool Only.  
5
6
* NA  
E (On)  
Cr Heat (FA)  
Cr Cool (FA)  
CL (OFF)  
dL (On)  
OFF  
SL  
Selects Energy Management Recovery on or off.  
Selects Heat cycle rate Fast (FA) or Slow (SL).  
Selects Cool cycle rate Fast (FA) or Slow (SL).  
Selects Compressor lockout ON or OFF.  
Selects display light on or off.  
5
6
4
5
6
7
8
7
SL  
7
8
On  
8
9
OFF  
9
10  
0
1, 2, 3, 4 HI  
1, 2, 3, 4 LO  
°C  
Selects temperature display adjustment 1, 2, 3 or 4 degrees  
high or low.  
10  
(Room temp)  
°F  
11  
12  
13  
9
Selects Fahrenheit or Celsius temperature display.  
Selects beeper on or off.  
11  
12  
13  
10  
11  
b (On)  
OFF  
Heat (99)  
62-99  
Selects highest Heat setpoint temperature.  
Can select 62° to 99°F.  
14  
15  
16  
12  
13  
14  
Cool (45)  
45-82  
Selects lowest Cool setpoint temperature.  
Can select 45° to 82°F.  
14  
15  
16  
Keypad  
lockout (L)  
Keypad  
L, P  
Temperature Limit  
On  
Selects keypad lockout full or partial to be set.  
Activates temperature limit ranges.  
Selects keypad lockout on or off.  
lockout (OFF)  
000  
000 to 999  
On  
Selects keypad lockout combination number if lockout is on.  
000 is not a valid selection.  
17  
18  
15  
16  
000 Change  
Filter (OFF)  
200 hours  
Change  
Select change filter alert time period.  
17  
18  
25 to 1975 hours  
On  
When set ON, selects time in 25 hour increments.  
Selects change humidifier pad alert time period  
Humidifier  
(OFF)  
100 hours  
25 to 1975 hours  
When set ON, selects time in 25 hour increments.  
* Not Applicable  
1) GAS or Electric (ELE) fan operation. If the heating system 4) System Switch Configuration – This thermostat is  
requires the thermostat to energize the fan, select ELE.  
Select GAS if the heating system energizes the fan on a  
call for heat. Note: Resetting the thermostat switches the  
option to ELE.  
configured for Heat and Cool with Auto changeover  
(SYSTEM switch with Cool Off Heat Auto) default. It can  
also be configured for Heat and Cool (Cool Off Heat),  
Heat only (Off Heat), and Cool only (Cool Off).  
5) Energy Management Recovery – (this step is skipped if  
configured to be non-programmable).  
2) This control can be configured for 7 independent day or  
5/1/1 programming or non-programmable mode. The  
display indicates "7 Days" as default. The programs per  
week can be toggled to "5 Days" or "0 Days" by pressing  
Energy Management Recovery (E) On causes the  
thermostat to start heating or cooling early to make the  
building temperature reach the program setpoint at the  
time you specify. Heating will start 5 minutes early for  
every 1° of temperature required to reach setpoint.  
Example: E On is selected and your heating is pro-  
grammed to 65° at night and 70° at 7 AM. If the building  
temperature is 65°, the difference between 65° and 70° is  
5°. Allowing 5 minutes per degree, the thermostat set-  
point will change to 70° at 6:35 AM. Cooling allows  
more time per degree, because it takes longer to reach  
temperature.  
the  
or  
keys. A selection of 0 Days for non-program-  
mable will eliminate the need for EMR, and that step  
in the menu will be skipped.  
3) Programmable Periods – This control can be configured  
for 4 or 2 programmable periods per day. The display  
indicates "4 PS" in the display as default. The program-  
mable periods can be toggled by pressing the  
keys.  
or  
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INSTALLER/CONFIGURATION MENU  
15) Keypad Lockout – This step allows you to select the  
6 & 7) Fast or Slow Cycle Selection – The factory default  
setting for Heat is fast cycle (FA), which cycles heat at  
approximately 0.6°F. If you prefer slow cycle, press the  
type of lockout or limited range security required. If no  
lockout or limited range security is required, press  
advance the menu.  
to  
or  
key to change to SL. Heat will cycle at approxi-  
mately 1.2°F. For Cool the default setting is fast cycle  
(FA), which cycles cool at approximately 1.2°F. If you  
Three security settings are available in this menu item.  
Use the  
or  
keys to select the lockout desired.  
Lockout selections are:  
prefer slow cycle, press the  
or  
key to change to SL,  
cool will cycle at approximately 1.7°F.  
"Keypad Lockout and L" = Total Lockout. Total Lockout  
locks all keys.  
"Keypad Lockout and P" = Partial Lockout. Partial Lock-  
8) Select Compressor Lockout CL OFF or ON – Selecting  
CL ON will cause the thermostat to wait 5 minutes be-  
tween cooling cycles. This is intended to help protect the  
compressor from short cycling. Some newer compres-  
sors already have a time delay built in and do not require  
this feature. Your compressor manufacturer can tell you if  
the lockout feature is already present in their system.  
When the thermostat compressor time delay occurs, it  
will flash the setpoint for up to five minutes.  
out allows only the  
or  
keys to operate within your  
set temperature limits.  
"Temperature Limit/Keypad Lockout" prevents  
changing the temperature limits in the Configuration  
Menu.  
16) Keypad Lockout Combination Number Selection  
Display will read "OFF" "Keypad Lockout".  
Skip this step and continue through the configuration  
menu items 17 and 18 if you require an Air Filter Change  
out indicator or Humidifier Pad Change out indicator by  
When CL is ON and 24V common (C) is connected, the  
lockout feature will prevent compressor start after a 24V  
power interruption of less than 5 minutes. This will  
assure a 5-minute delay to prevent premature compress-  
or failure.  
pressing the  
button to advance.  
Return to this point when you are ready to start your  
selected lock-out and continue by:  
9) Select Backlight Display – The display backlight  
improves display contrast in low lighting conditions.  
When the C terminal is powered, selecting backlight (dL  
ON) will turn the light on continuously. Selecting backlight  
OFF will turn the light on momentarily after any key is  
pressed. When the C terminal is not powered, this  
selection has no effect.  
Pressing  
Press . Display will read "000".  
Pressing or keys to select your keypad lockout  
or  
keys to select ON.  
combination number. Note: "000" is not a valid  
combination choice.  
Record the number you select for future use.  
10) Select Temperature Display Adjustment 4 LO to 4 HI  
Allows you to adjust the room temperature display up to  
4° higher or lower. Your thermostat was accurately cali-  
brated at the factory, but you have the option to change  
the display temperature to match your previous thermo-  
stat. The current or adjusted room temperature will be  
displayed on the left side of the display.  
11) Select F° or C° Readout – Changes the display readout  
to Centigrade or Fahrenheit as required.  
12) Select Audio Prompting (Beeper) On or Off – Default  
setting is On (On b) if you wish to turn off the beeper  
select Off b.  
Press  
to exit the menu. The security feature you  
select will start in 10 seconds. The system button will  
remain active for 10 seconds to allow setting Heat, Off,  
Cool or Auto.  
17) Select Filter Replacement Run Time – The thermostat  
will display "Change Filter" after a set time of blower  
operation. This is a reminder to change or clean your air  
filter. This time can be set from 25 to 1975 hours in 25  
hour increments. A selection of OFF will cancel this  
feature. When "Change Filter" is displayed, you can  
clear it by pressing Clean Display. In a typical application,  
200 hours of run time is approximately 30 days.  
18) Select Humidifier Pad Replacement Run Time – The  
thermostat will display "Change Humidifier Pad" after a  
set time of humidifier operation. This is a reminder to  
change or clean your humidifier pad. This time can be set  
from 25 to 1975 hours in 25 hour increments. A selection  
of OFF will cancel this feature. When "Change Humidi-  
fier Pad" is displayed, you can clear it by pressing Clean  
Display. Check with your humidifier manufacturer for a  
recommended maintenance interval.  
13) Heat Temperature Limit Range – This feature adjusts  
the highest setpoint temperature for heat. The default  
setting is 99°F. It can be changed between 62°F and  
98°F by pressing the  
or  
key. The "temperature  
limit" icon will be displayed to the left of your setpoint  
temperature when using this feature. The "temperature  
limit" icon will flash if an attempt is made to adjust the  
temperature beyond the range selected.  
14) Cool Temperature Limit Range – This feature adjusts  
the lowest setpoint temperature for cool. The default  
setting is 45°F. It can be changed between 46°F and  
82°F by pressing the  
or  
key. The "temperature  
limit" icon will be displayed to the left of your setpoint  
temperature when using this feature. The "temperature  
limit" icon will flash if an attempt is made to adjust the  
temperature beyond the range selected.  
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OPERATING YOUR THERMOSTAT  
Choose the Fan Setting (Auto or On)  
Set the FAN Switch to Auto or On.  
Fan Auto is the most commonly selected setting and runs  
the fan only when the heating or cooling system is on.  
Fan On runs the fan continuously for increased air circulation  
or to allow additional air cleaning.  
IMPORTANT!  
Manual Operation (Bypassing the Program)  
Programmable Thermostats  
Press  
or  
and the HOLD button, then adjust the  
temperature wherever you like. This will override the pro-  
gram. The HOLD feature bypasses the program and allows  
you to adjust the temperature manually, as needed. What-  
ever temperature you set in HOLD will be maintained 24  
hours a day, until you manually change the temperature or  
press Run Schedule to cancel HOLD and resume the  
programmed schedule.  
Choose the System Setting  
(Heat, Off, Cool, Auto)  
Press the SYSTEM button to select:  
Heat: Thermostat controls only the heating system.  
Off: Heating and Cooling systems are off.  
Program Override (Temporary Override)  
Cool: Thermostat controls only the cooling system.  
Press  
or  
buttons to adjust the temperature. This will  
Auto: Auto Changeover is used in areas where both heating  
and cooling may be required on the same day. AUTO allows  
the thermostat to automatically select heating or cooling  
depending on the indoor temperature and the selected heat  
override the temperature setting for a (default) four hour  
override period. The override period can be shortened by  
pressing  
or lengthened by pressing . Program Override  
period can range from 15 minutes to 7 days.  
and cool temperatures. When using AUTO, be sure to set the Example: If you turn up the heat during the morning pro-  
Cooling temperatures more than 1° Fahrenheit higher than  
the heating temperature.  
gram, it will be automatically lowered later, when the tempo-  
rary hold period ends. To cancel the temporary setting at any  
time and return to the program, press Run Schedule.  
If the SYSTEM button is pressed to select AUTO the  
thermostat will change to Heat or Cool, whichever ran last. If  
it switches to heat but you want cool, or it changes to cool  
Manual Operation for  
Non-Programmable Thermostats  
Press the SYSTEM button to select Heat or Cool and use  
the  
or  
buttons to adjust the temperature to your  
but you want heat, press both  
and  
buttons simulta-  
desired setting. After selecting your desired settings you can  
also press the SYSTEM button to select AUTO to allow  
the thermostat to automatically change between Heat and  
Cool.  
neously to change to the other mode.  
PROGRAMMING  
Set Current Time and Day  
1) Press Menu and then Set Time button once. The display  
will show the hour only.  
Fill in the blank schedule on the next page then:  
Enter the Heating Program  
1) Press the Menu button and then press Set Schedule.  
Press SYSTEM button to select "Heat" in the system  
switch area indicating the active mode being pro-  
grammed.  
2) Press and hold either the  
or  
key until you reach  
the correct hour and AM/PM designation (AM begins at  
midnight, PM begins at noon).  
3) Press Set Time once again. The display window will show  
the minutes only.  
2) The top of the display will show the day(s) being pro-  
grammed. The time and set at temperature are also  
displayed. "Morning" will also be displayed to indicate  
the period.  
4) Press and hold either the  
the correct minutes.  
or  
key until you reach  
5) Press Set Time once again. The display will show the day  
of the week.  
3) Press  
selected temperature for the 1st heating period (Morning).  
4) Press or key to adjust the start time for period.  
5) The time will change in 15 minute increments.  
6) After you have set the time and the temperature for the  
period to begin, press Set Schedule to advance to the  
next program period.  
or  
key to change the temperature to your  
6) Press the  
of the week.  
or  
key until you reach the current day  
7) Press Run Schedule once. The display will show the  
correct time and room temperature alternately.  
7) Repeat steps 2 through 6 until all of the program times  
and temperatures are set for all program periods on  
that day.  
8) Press "Advance Day" to change to the next day and  
repeat steps 2 through 8.  
9) When programming is complete and all of the times and  
temperatures match your desired heating schedule, press  
Run Schedule. The thermostat will now run your program.  
Programming Tip: Copy Button  
You may copy any daily program to another day or group of  
days by pressing the Copy button. In 7 day programming  
mode when the Copy button is pressed, the other 6 days of  
the week will flash. To copy the current program into the  
remaining six days, simply press the Copy button again. To  
copy the current program to another day of the week, press  
Advance Day to select the day and press Copy to paste the  
program. In 5/1/1 day programming mode the copy function  
is similar. The weekday (Mon-Fri) program can be copied to  
Sat and Sun (both flashing) or use Advance Day to choose  
Sat or Sun and press the Copy button to paste the program.  
Enter the Cooling Program  
1) Press SYSTEM button to select "Cool" in the system  
switch area indicating the active mode being pro-  
grammed.  
2) Follow Enter Heating Program instructions for entering  
cooling times and temperatures.  
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PROGRAMMING  
Energy Saving Factory Pre-Program  
The 1F97-1271 thermostats are programmed with the energy saving settings shown in the table below for all days of the  
week. If this program suits your needs, simply set the thermostat clock and press the RUN button.  
The table below shows the factory set heating and cooling schedule for all days of the week.  
* Wake Up  
(Morning)  
Leave For Work  
(Day)  
* Return Home  
(Evening)  
Go To Bed  
(Night)  
Heating  
Program  
6:00 AM  
70°F  
8:00 AM  
62°F  
5:00 PM  
70°F  
10:00 PM  
62°F  
82°F  
Cooling  
Program  
6:00 AM  
78°F  
8:00 AM  
85°F  
5:00 PM  
78°F  
10:00 PM  
* You can eliminate these two program periods in the configuration menu (reference #3) if the building is occupied all day.  
Day will change to 6:00 am and can be programmed as required.  
Planning Your Program – Important  
The Heating and Cooling Program schedules below allow you to pencil in your own program times and temperatures.  
The 1F97-1271 comes configured for 7 day programming and can also be configured for 5+1+1 programming (see configura-  
tion section).  
Factory settings are listed on Monday, Saturday and Sunday. If you are re-programming a 5+1+1 day schedule, pencil in your  
own times and temperatures directly below the factory times and temperatures.  
If you are re-programming a 7 day fill in all lines with the times and temperatures you want.  
Keep the following guidelines in mind when planning your program.  
• In Heating, lower temperatures will save energy.  
• In Cooling, higher temperatures will save energy.  
If you plan on using Auto Changeover, do not program the heating higher than the cooling.  
Worksheet for Re-Programming 5+1+1 and 7 Day Program  
Heating  
Program  
Wake Up  
(Morning)  
Leave For Work  
(Day)  
Return Home  
(Evening)  
Go To Bed  
(Night)  
6:00 AM  
70°F  
8:00 AM  
62°F  
5:00 PM  
70°F  
10:00 PM  
62°F  
MON  
TUE  
WED  
THU  
FRI  
6:00 AM  
6:00 AM  
70°F  
70°F  
8:00 AM  
8:00 AM  
62°F  
62°F  
6:00 PM  
6:00 PM  
70°F  
70°F  
10:00 PM  
10:00 PM  
62°F  
62°F  
SAT  
SUN  
Cooling  
Program  
Wake Up  
(Morning)  
Leave For Work  
(Day)  
Return Home  
(Evening)  
Go To Bed  
(Night)  
6:00 AM  
78°F  
8:00 AM  
85°F  
5:00 PM  
78°F  
10:00 PM  
82°F  
MON  
TUE  
WED  
THU  
FRI  
6:00 AM  
6:00 AM  
78°F  
78°F  
8:00 AM  
8:00 AM  
85°F  
85°F  
5:00 PM  
5:00 PM  
78°F  
78°F  
10:00 PM  
10:00 PM  
82°F  
82°F  
SAT  
SUN  
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TROUBLESHOOTING  
Reset Operation  
If a voltage spike or static discharge blanks out the display or causes erratic thermostat operation, you can reset the thermostat by removing  
the wires from terminals R and C (do not short them together) and removing batteries for 2 minutes. After resetting the thermostat, replace  
the wires and batteries. If the thermostat has been reset and still does not function correctly contact your heating/cooling service person or  
place of purchase.  
To reset the programming, clock and configuration settings, press  
should go blank and then all segments will be displayed momentarily.  
and  
and the SYSTEM button simultaneously. The thermostat  
Possible Cause  
Corrective Action  
Symptom  
1. Blown fuse or tripped circuit breaker.  
2. Furnace power switch to OFF.  
Replace fuse or reset breaker.  
Turn switch to ON.  
No Heat/No Cool/No Fan  
(common problems)  
3. Furnace blower compartment door or  
panel loose or not properly installed.  
Replace door panel in proper position to engage safety  
interlock or door switch.  
4. Loose connection to thermostat or system. Tighten connections.  
1. Pilot light not lit.  
Re-light pilot.  
No Heat  
2. Furnace Lock-Out Condition. Heat  
may also be intermittent.  
Many furnaces have safety devices that shut down when a  
lock-out condition occurs. If the heat works intermittently  
contact the furnace manufacturer or local HVAC service  
person for assistance.  
3. Heating system requires service or  
thermostat requires replacement.  
Diagnostic: Set SYSTEM Switch to HEAT and raise the  
setpoint above room temperature. Within a few seconds  
the thermostat should make a soft click sound. This sound  
usually indicates the thermostat is operating properly. If  
the thermostat does not click, try the reset operation listed  
above. If the thermostat does not click after being reset  
contact your heating and cooling service person or place  
of purchase for a replacement. If the thermostat clicks,  
contact the furnace manufacturer or a HVAC service  
person to verify the heating is operating correctly.  
1. Cooling system requires service or  
thermostat requires replacement.  
Same as diagnostic for No Heat condition except set the  
thermostat to COOL and lower the setpoint below the  
room temperature. There may be up to a five minute delay  
before the thermostat clicks in Cooling.  
No Cool  
1. Possible short in wiring.  
Check each wire connection to verify they are not shorted  
or touching together. No bare wire should stick out from  
under terminal block. Try resetting the thermostat as  
described above. If the condition persists the manufacturer  
of your system or service person can instruct you on how  
to test the Heat/Cool system for correct operation. If the  
system operates correctly, replace the thermostat.  
Heat, Cool or Fan  
Runs Constantly  
2. Possible short in thermostat.  
3. Possible short in heat/cool/fan system.  
4. FAN Switch set to Fan ON.  
1. Thermostat thermometer setting  
requires adjustment.  
The thermometer can be adjusted +/- 4 degrees. See  
Temperature Display Adjustment in the Configuration  
Menu section.  
Thermostat Setting &  
Thermostat Thermometer  
Disagree  
1. The location of the thermostat and/or  
the size of the Heating System may  
be influencing the cycle rate.  
Digital thermostats provide precise control and cycle faster  
than older mechanical models. The system turns on and  
off more frequently but runs for a shorter time so there is  
no increase in energy use. If you would like an increased  
cycle time, choose SL for slow cycle in the Configuration  
menu, step 6 (heat) or 7 (cool). If an acceptable cycle rate  
is not achieved, contact a local HVAC service person for  
additional suggestions.  
Furnace (Air Conditioner)  
Cycles Too Fast or Too Slow  
(narrow or wide  
temperature swing)  
Press the Menu button (button will disappear) and hold in  
for 15 to 20 seconds. This unlocks the thermostat.  
Forgot Keypad  
Lockout Code  
HOMEOWNER HELP LINE: 1-800-284-2925  
White-Rodgers is a division  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.  
St. Louis, Missouri