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90 Series Blue Universal Thermostat with  
Automatic Heat/Cool Changeover Option  
Single Stage, Multi-Stage, Heat Pump  
Installation and Operating Instructions for Model:  
Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS  
CAREFULLYBEFOREINSTALLINGOROPERATINGTHIS  
CONTROL COULD CAUSE PERSONAL INJURY AND/OR  
PROPERTYDAMAGE.  
Model  
Programming Choices  
1F95-1277 Non-Programmable 5/1/1 Day 7 Day  
1F95-1277 Touchscreen Thermostat  
APPLICATIONS  
THERMOSTATAPPLICATIONGUIDE  
Description  
Heat Pump (No Aux. or Emergency Heat)  
Heat Pump (with Aux. or Emergency Heat)  
Systems with up to 3 Stages Heat, 2 Stages Cool  
Heat Only Systems  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Yes  
Millivolt Heat Only Systems – Floor or Wall Furnaces  
Cool Only Systems  
Gas or Oil Heat  
Electric Furnace  
Hydronic (Hot Water) Zone Heat – 2 Wires  
Hydronic (Hot Water) Zone Heat – 3 Wires  
Wired Remote Temperature Sensor (Indoor/Outdoor)  
Dual Fuel Feature (Heat Pump Mode)  
SPECIFICATIONS  
Electrical Rating:  
Battery Power . . . . . . . . . . . . . . . . . . . . . . . . . mV to 30 VAC, NEC Class II, 50/60 Hz or DC  
Input-Hardwire . . . . . . . . . . . . . . . . . . . . . . . . 20 to 30 VAC  
Terminal Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5A per terminal, 2.5A maximum all terminals combined  
Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 to 99°F (7 to 32°C)  
Differential (Single Stage) . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F  
Differential (Multi-Stage) . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F  
Differential (Heat Pump) . . . . . . . . . . . . . . . . . . . . Heat 1.2°F; Cool 1.5°F  
Operating Ambient . . . . . . . . . . . . . . . . . . . . . . . . . 32°F 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
7
7
11  
Wiring Connections  
Thermostat Quick Reference  
Installer Configuration Menu  
Operating Your Thermostat  
Programming  
White-Rodgers  
2895 Harrison Street  
Batesville, AR 72501  
Troubleshooting  
PART NO. 37-6753B  
Replaces 37-6753A  
0706  
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INSTALLATION  
Battery Location  
WARNING  
!
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). For best results, use a  
premium brand "AA" alkaline battery such as Duracell® or  
Energizer®.  
Thermostat installation and all components of the  
control system shall conform to Class II circuits per  
the NEC code.  
Remove Old Thermostat  
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 Multi-Stage 1F95-1277  
+
S
Mounting  
Hole  
Mounting  
Hole  
-
Y2  
W2  
W/E  
6
L
Installing New Thermostat  
Place Level  
across  
Mounting Tabs  
(for appearance only)  
Place Level  
across  
Mounting Tabs  
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  
locations on wall using base as a template.  
(for appearance only)  
Rear view of thermostat  
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.  
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 diagram sheet  
37-6808).  
2 "AA" Batteries  
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.  
WIRINGCONNECTIONS  
Refer to equipment manufacturers' instructions for specific  
system wiring information. After wiring, see CONFIGURA-  
TION section for proper thermostat configuration.  
For wiring diagrams, see 37-6808.  
Wiring diagrams shown are for typical systems and describe  
the thermostat terminal functions.  
TERMINAL DESIGNATION DESCRIPTIONS  
Terminal Designation  
Description  
B
O
. . . . . . . . . . . . . . . . . . Changeover valve for heat pump energized constantly in heating  
. . . . . . . . . . . . . . . . . . Changeover valve for heat pump energized constantly in cooling and off  
Y2 . . . . . . . . . . . . . . . . . . 2nd Stage Compressor  
Y
G
. . . . . . . . . . . . . . . . . . Compressor Relay  
. . . . . . . . . . . . . . . . . . Fan Relay  
RC . . . . . . . . . . . . . . . . . . Power for Cooling  
RH . . . . . . . . . . . . . . . . . . Power for Heating  
C
. . . . . . . . . . . . . . . . . . Common wire from secondary side of cooling (Optional). Required for fault indication,  
continuous backlight operation or remote temperature sensor operation  
L
6
. . . . . . . . . . . . . . . . . . Malfunction indicator for systems with malfunction connection  
. . . . . . . . . . . . . . . . . . Powered closed 3rd wire for 3-wire zone valve  
W/E . . . . . . . . . . . . . . . . . Heat Relay/Emergency Heat Relay (Stage 1)  
W2 . . . . . . . . . . . . . . . . . . 2nd Stage Heat (3rd Stage Heat in HP2)  
Blank . . . . . . . . . . . . . . . . . Blank  
- . . . . . . . . . . . . . . . . . . . Common (DC) for wired remote temperature sensor  
S
+
. . . . . . . . . . . . . . . . . . Frequency signal from remote temperature sensor  
. . . . . . . . . . . . . . . . . . Power (DC) to remote temperature sensor  
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THERMOSTATQUICKREFERENCE  
Home Screen Description  
Figure 2 Home Screen Display  
Room  
Temperature  
Day of Week  
Set Temperature  
Time of Day  
Temperature  
UP/Down used for  
modifying set point  
as well as to  
System  
Switch  
navigating the menus  
Fan  
Enters comfort  
Switch  
temperature settings  
into the schedule  
Menu key for entering  
different modes such as  
Cleaning, Configuration, Set  
Time and Set Schedule  
Battery Level Indicator  
Indicating the current power level  
of the 2 AAbatteries.  
Full power remaining.  
Indicates when  
thermostat is calling  
for Heat or Cool  
Half power remaining.  
Change  
The batteries should be replaced at this time.  
Programming and Configuration Items  
Figure 3 Programming & Configuration Items  
Displays  
and "Keypad Lockout" when in keypad  
1
lockout mode.  
16  
Displays  
and "Temperature Limit" and "Keypad  
11  
15  
5
10  
Lockout" when limited range is activated and locked.  
Displays only "Temperature Limit" when limited range  
is activated.  
9
8
Indicates period of day being programmed.  
RUN SCHEDULE (run program) button.  
SET TIME button or HOLD temperature button.  
2
3
4
1
2
13  
14  
Displays "Change Filter" when the system has run  
for the programmed filter time period as a reminder  
to change or clean your filter.  
5
12  
COPY button or INSTALLER CONFIG button.  
6
7
3
CLEAN DISPLAY button allows 30 seconds to wipe off  
the display or ADVANCE DAY button for programming.  
4
7
6
Used in programming to set time and in configuration  
menu to change selections.  
8
9
"System On" indicates when heating or cooling stage  
is energized. "+2" also indicates when a second stage  
is energized.  
13  
"Hold Until" indicates the time when a temporary hold  
period will end.  
"Hours" and "Days" displays during steps in installer  
configuration.  
10  
"Copy" indicates the copy program feature is being  
used during programming.  
A steady "Cool Savings" display indicates the feature  
is enabled in the installer menu. A flashing "Cool  
Savings" display indicates the feature is active.  
14  
15  
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  
"Remote" indicates that the indoor remote temperature  
sensor, is being accessed. "Outdoor Remote" indi-  
cates the outdoor remote temperature sensor is being  
accessed.  
16  
"Call For Service" indicates a fault in the heating/  
cooling system. It does not indicate a fault in the  
thermostat.  
12  
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INSTALLER/CONFIGURATIONMENU  
To enter the menu: Press the Menu touch key. Press and hold for 5 seconds the Installer Config touch key. This displays  
menu item #1 in the table below. Press  
or to change a menu item.  
to advance to the next menu item or  
to return to a previous menu item. Press  
CONFIGURATION MENU  
Non-  
Displayed  
(Factory  
Default)  
Press  
to select from  
listed options  
or  
Menu  
Reference  
Number  
Program- Program- Press  
mable  
mable Button  
Comments  
1
1
MS 2  
HP 1, HP 2, SS 1  
GAS  
Selects Multi-Stage (MS 2, No Heat Pump), Heat Pump 1  
(HP 1, 1 compressor), Heat Pump 2 (HP 2, 2 compressor  
or 2 speed compressor), or Single Stage.  
GAS setting: furnace controls blower.  
ELE setting: thermostat controls blower.  
Programs per week. (0 = non-programmable)  
Program periods per day.  
1
2
2
2
(ELE)  
3
4
3
Days, (7) P  
PS (4)  
5-1-1 or 0  
2
3
4
NA  
4 = Morning, Day, Evening, Night  
2 = Day, Night  
5
4
Cool-Off-  
Heat-Auto  
Cool-Off-Heat,  
System switch configuration in non heat pump mode.  
5
Off-Heat, Cool-Off  
Cool-Off-Heat-  
Emer-Auto  
Cool-Off-Heat-Emer,  
System switch configuration, heat pump mode.  
Off-Heat-Emer, Cool-Off  
6
7
8
9
NA  
5
E (On)  
OFF  
SL  
Selects Energy Management Recovery, E (with programming option on)  
Selects Adjustable Anticipation, cycle rate, Heat  
Selects Adjustable Anticipation, cycle rate, Cool  
Selects Adjustable Anticipation, cycle rate auxiliary, (This item is  
only to appear if HP 1 or HP 2 is selected above).  
Selects Compressor Lockout.  
6
7
8
9
Cr, Heat (FA)  
Cr, Cool (FA)  
Cr/AU, Emer (FA)  
6
SL  
7
SL  
10  
11  
12  
13  
8
9
CL (OFF)  
dL (On)  
dL (LO)  
0
On  
OFF  
10  
11  
12  
13  
Selects Continuous Display backlight & intensity.  
Selects Backlight Intensity.  
10  
11  
HI  
4, LO to 4, HI  
Selects Adjustable Ambient Temperature Display [range -4 (LO) to  
+4 (HI)].  
14  
15  
16  
17  
12  
13  
14  
15  
°F  
°C  
Selects °F/°C Display (temperature units in Fahrenheit or Celsius).  
Selects audible Beeper On/Off.  
14  
15  
16  
17  
b (On)  
OFF  
OFF  
OFF  
dS (On)  
Selects Daylight Saving Time calculation.  
Selects Automatic Schedule for comfort temperature Programming,  
heat mode.  
AS, Heat (On)  
18  
19  
16  
17  
AS, Cool (On)  
OFF  
Selects Automatic Schedule for comfort temperature Programming,  
cool mode.  
18  
19  
CS, (OFF)  
Cool Savings  
HL, Heat (99)  
LL, Cool (45)  
OFF,  
1-2-3-4-5-6  
Selects Cool Saving Feature & amount.  
20  
21  
22  
18  
19  
20  
62-98  
46-82  
TEMPERATURE LIMIT, HEAT (max. heat set point).  
TEMPERATURE LIMIT, COOL (min. cool set point).  
Selects Keypad Lockout.  
20  
21  
22  
L (total), P (partial),  
Keypad Lockout Temperature Limit  
(limited temperature range)  
000  
001-999  
Selects Keypad Lockout Combination (active only if keypad Lockout  
is selected).  
23  
24  
21  
22  
FS, Heat (On)  
FS, Cool (On)  
OFF  
OFF  
Fast second stage of heat (not available if SS1 is selected above).  
Fast second stage of cool (not available if SS1 or HP1 is selected  
above).  
23  
24  
25  
23  
Remote (OFF)  
In, Remote  
LS (On)  
On  
Outdoor Remote  
OFF  
Remote temperature sensor, enable/disable.  
Remote temperature sensor (Indoor/Outdoor).  
Local temp. Sensor enable/disable (only when Indoor Remote is  
selected On).  
25  
26  
27  
24  
25  
dF (5)  
5-50  
Selects Dual Fuel Feature & set point (in Fahrenheit) (applicable only  
when HP1 or HP2 is selected).  
26  
27  
Cd (60)  
Change Filter  
(OFF)  
0-99  
On  
Selects Compressor delay in seconds (only when dF is selected >5).  
Selects Change filter feature  
200 Hours  
25-1975 (in increments Change filter, duration hours.  
of 25 hours)  
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INSTALLER/CONFIGURATIONMENU  
1) This control can be configured for:  
11) Select Continuous Backlight In low lighting condi-  
tions, display backlight improves the display contrast.  
When C terminal is connected, selecting dL On will turn  
the backlight on continuously. Selecting dL Off will turn  
the backlight on momentarily after any key is pressed.  
When C terminal is not powered (battery only), dL On  
enables the momentary backlight whenever a key is  
pressed.  
MS2 Multi-Stage System (2 heat/2 cool)  
HP1 Heat Pump with one stage of compressor  
(2 heat/1 cool)  
HP2 Heat Pump with two stage compressor or two  
compressor system, Gas or Electric backup; (Dual Fuel  
see menu item 26) (3 heat/2 cool)  
SS1 Single Stage System (3 wire zone see wiring  
diagram 37-6808A)  
12) Select Backlight Intensity This thermostat has the  
ability to provide two selectable intensities of the back-  
2) GAS or Electric (ELE) fan operation. If the heating  
system 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 thermo-  
stat switches the option to ELE.  
3) Programs per week This control can be configured for  
7 independent day or 5/1/1 day programming or non-  
programmable modes. Default is 7-day mode. The  
display indicates "7 Days" as default. Other options "5  
Days" or "0 Days" can be selected by pressing touch  
light: HI and LO. Using  
or  
touch keys you can  
toggle the selection between HI and LO.  
13) Select Temperature Display Adjustment 4 LO to 4 HI  
This allows you to adjust the room temperature display  
by an amount in the range of -4°F to +4°F in 1° steps by  
using the  
or  
touch keys. Your thermostat was  
accurately calibrated at the factory, however you have the  
option to change the display temperature value to match  
your previous thermostat, if you so prefer.  
keys,  
or  
. If "0 Days" is selected for non-program-  
14) Select °F or °C Readout Select the desired temper-  
mable mode, the step for EMR will be skipped, as this  
feature will not be available in this mode.  
4) Program Steps per day This control can be config-  
ured for 4 or 2 program steps per day. Default is "4 PS"  
and can be toggled between 4 PS and 2 PS by pressing  
ature unit by pressing  
or . Factory default is °F.  
15) Select Audio Prompting (Beeper) On or Off Factory  
default setting is on (b, On). If you wish to turn off the  
beeper select OFF.  
16) Select Daylight Saving Time Calculation This feature  
will allow the thermostat to calculate the DST automati-  
cally and apply it to the Real Time Clock display. Default  
the  
or  
touch keys.  
5) System Switch Configuration (MS2/SS1) This  
thermostat is configured for Heat and Cool with Auto  
changeover default (Cool-Off-Heat-Auto). Can be  
configured as Heat & Cool (Cool-Off-Heat), or Heat Only  
(Off-Heat), or Cool Only (Cool-Off).  
On. Use  
or  
touch keys to select the feature, OFF.  
17 & 18) Select Automatic Schedule This feature allows  
programming a Comfort Temperatureinto all program  
periods with the Auto Schedule key. When Heat AS (for  
Heat mode) or Cool AS (for Cool mode) is selected On,  
the Auto Schedule feature is ready to be set. Off  
indicates that the feature is not ready to be used or a  
Comfort Temperature is already set. See Auto Schedule  
in Programming section.  
When the control is in heat pump configuration (HP1/  
HP2), the system switch configuration will have an  
additional mode available namely, Emer for Emergency  
Mode.  
6) Energy Management Recovery (EMR) (this step is  
skipped if configured as non-programmable).  
When set to "On" causes the thermostat to start heating  
or cooling early to make the building temperature reach  
the program setpoint at the time you specify.  
19) Select Cool Savings: With Cool Savingsenabled,  
the thermostat will make small adjustments to the  
setpoint temperature during periods of high demand to  
reduce AC system running time and save energy. When  
the cooling system has been running for more than 20  
minutes, humidity in the home will be lower and a higher  
temperature will feel comfortable. After 20 minutes of run  
time, the thermostat will start increasing the setpoint  
temperature in steps of less than one degree as the  
system continues to run. These adjustments will eventu-  
ally cause the system to satisfy the thermostat to turn the  
system off and reduce the energy consumption. When  
the Cool Savingsfeature is active and making adjust-  
ments, the display will flash Cool Savings. The amount  
of the adjustments to the setpoint temperature is depen-  
dent on the Cool Savingsvalue that is set, 1 being the  
least adjustment and 6 being the most adjustment. With  
this feature set to OFF, no change will occur when the AC  
system is continuously running during the periods of high  
demand. Periods of high demand will normally occur  
during the late afternoon and early evening on the hottest  
days of the summer. As demand lessens the adjustments  
to setpoint temperature are reversed until setpoint  
temperature returns to normal and Cool Savingsno  
longer flashes.  
Example: Let us say, the heating program is 65°F at  
night and 70° at 7 AM. If the building temperature is 65°F,  
the difference is 5°F. Allowing 5 minutes per °F rise, the  
thermostat setpoint will change to 70° at 6:35 AM.  
Cooling allows more time per °F, because it takes  
longer to reach temperature.  
7, 8 & 9) Cycle Rate Selection The factory default setting  
is fast cycle (FA Cr) in all modes (Heat, Cool, Emer). To  
slow cycling (SL, Cr), press touch keys  
or  
toggle  
between FA & SL. The cycle rates are as below different  
selections:  
Mode  
Heat  
Cool  
Fast rate  
0.6°F  
1.2°F  
Slow rate  
1.2°F  
1.7°F  
Emer  
1.2°F  
1.7°F  
10) Select Compressor Lockout (CL) Selecting CL On  
will cause the thermostat to wait 5 minutes between  
cooling cycles. This is intended to help protect the  
compressor from short cycling. Some of the newer  
compressors have already got a time delay built in and  
do not require this feature to be activated in the thermo-  
stat. Your compressor manufacturer can tell you if  
this lockout feature is already present in their system.  
When the thermostat compressor time delay is activated,  
it will flash the set point for up to five minutes.  
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ge This feature adjusts  
                                                                            
                                                                              
                                                                              
INSTALLER/CONFIGURATIONMENU  
23 & 24) Select Fast Second Stage ON or OFF In the run  
mode, with the fast Heat feature enabled (FA Heat On), if  
the Heat setpoint temperature is manually raised by 3°F  
the highest setpoint temperature for heat. The default  
setting is 99°F. It can be changed between 62°F and  
(2°C) or more above the actual temperature using  
the  
98°F by pressing the  
or  
key. The "temperature  
second stage will energize immediately. With FA OFF,  
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.  
second stage will not energize until the setpoint tempera-  
ture is 1°F or more above actual temperature for more  
than ten minutes. The Fast Cool feature (FA Cool)  
provides the same controls when the setpoint tempera-  
ture is lowered.  
21) 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  
25) Select Remote Temperature Sensor This control  
allows one wired remote temperature sensor (indoor,  
F145-1328, or outdoor, F145-1378) be connected to it  
and indicates the measured temperature in clock digits.  
This menu enables you to select the remote sensor and  
also configure it as indoor or outdoor temperature sensor.  
Factory default is off. Select Remote On and Remote in  
(for indoor) or Outdoor Remote.  
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.  
22) Keypad Lockout This step allows you to select the  
type of lockout or limited range security required. If no  
Local Temperature Sensor disable This is applicable  
only when indoor remote temperature sensor is enabled.  
Factory default is On LS. You can make it Off LS if you  
lockout or limited range security is required, press  
advance the menu.  
Three security settings are available in this menu item.  
Use the or keys to select the lockout desired.  
to  
desire by using  
or  
touch keys.Then, only the  
indoor remote temperature reading will be used for  
control.  
Lockout selections are:  
"Keypad Lockout and L" = Total Lockout. Total Lockout  
locks all keys.  
26) Select Dual Fuel Feature and Setpoint This feature is  
applicable only in heat pump modes. An outside remote  
sensor must also be installed. When the outside tem-  
perature falls below the selected setpoint temperature,  
dF, the thermostat will switch to gas heat and shut down  
"Keypad Lockout and P" = Partial Lockout. Partial Lock-  
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.  
Keypad Lockout Combination Number Selection  
Display will read "OFF" "Keypad Lockout".  
Skip this step and continue through the configuration  
menu items 19 thru 22 if you require an Air Filter Change  
out indicator or Humidifier Pad Change out indicator by  
the compressor. Use the  
or  
keys to select the  
desired setpoint temperature in the range of 5 to 50.  
Factory default is 5, which disables this feature. See  
Dual Fuel Temperature and Setpoint in Programming  
section.  
Select Compressor Delay When dF is enabled, the  
shut down of the compressor(s) is delayed for a time  
period after the auxiliary stage is energized. This delay,  
Cd, is factory set at 60, but can be set in the range of 0  
to 99.  
pressing the  
button to advance.  
Return to this point when you are ready to start your  
selected lock-out and continue by:  
27) Select Change Filter 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.  
Pressing  
Press . Display will read "000".  
Pressing or keys to select your keypad lockout  
combination number. Note: "000" is not a valid  
combination choice.  
or  
keys to select ON.  
Record the number you select for future use.  
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.  
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OPERATINGYOURTHERMOSTAT  
IMPORTANT!  
Choose the Fan Setting (Auto or On or Prog)  
Fan Auto is the most commonly selected setting and runs  
the fan only when the heating or cooling system is on.  
Fan On selection runs the fan continuously for increased air  
circulation or to allow additional air cleaning.  
Manual Operation (Bypassing the Program)  
Programmable Mode  
Press  
or  
and the HOLD button and adjust the tempera-  
ture wherever you like. This will override the program. The  
HOLD feature bypasses the program and allows you to  
adjust the temperature manually, as needed. Whatever  
Fan Prog will run the fan when the heating or cooling system  
is on. In addition, when the thermostat has not called for heat temperature you set in HOLD will be maintained 24 hours a  
or cool for more than 60 minutes, it will begin to cycle the fan  
for 10 minutes on and 20 minutes off to improve indoor air  
quality. This is the Comfort Circulating Fan Feature.  
day, until you manually change the temperature or press Run  
Schedule to cancel HOLD and resume the programmed  
schedule.  
Choose the System Setting  
Program Override (Temporary Override)  
(Cool, Off, Heat, Emer, Auto)  
Press the SYSTEM button to select:  
Press  
or  
buttons to adjust the temperature. This will  
override the temperature setting for a (default) four hour  
override period. The override period can be shortened by  
Heat: Thermostat controls only the heating system.  
pressing  
or lengthened by pressing . Program Override  
Off: Heating and Cooling systems are off.  
period can range from 15 minutes to 7 days.  
Cool: Thermostat controls only the cooling system.  
Example: If you turn up the heat during the morning pro-  
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  
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  
and cool temperatures. When using AUTO, be sure to set the  
Cooling temperatures more than 1° Fahrenheit higher than  
the heating temperature.  
but you want heat, press both  
or  
buttons simulta-  
Emer: Setting is available only when the thermostat is  
configured in HP1 or HP2 mode.  
neously to change to the other mode.  
Manual Operation for  
Non-Programmable Mode  
Press the SYSTEM button to select Heat or Cool and use  
the  
or  
buttons to adjust the temperature to your  
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.  
PROGRAMMING  
Set Current Time and Day  
Automatic Daylight Saving Calculation  
The Real Time Clock will adjust automatically for daylight  
savings time, in the following manner:  
Increment one hour at 2 AM on the second Sunday of March  
and decrement one hour at 2 AM on the first Sunday of  
November. (New DST effective 2007).  
The daylight saving feature can be enabled or disabled in  
installer configuration menu. Default is DS ON (enabled).  
After entering installer configuration mode, momentarily  
1) Press Menu key to enter installer menu. Then press  
Set Time once to indicate hour & A or P designation in  
clock display.  
2) Press and hold either the  
or  
touch key until you  
reach the correct hour and A or P designation.  
3) Press Set Time again to display minutes only in clock  
display.  
4) Press and hold either the  
reach the correct minutes.  
or  
touch keys until you  
press  
actual temperature digits) and on (default in clock digits).  
and keys will toggle display and operation from on to  
OFF.  
or  
touch key until the display indicates dS (in  
5) Press Set Time once again to display year.  
6) Press and hold either the  
reach the correct year.  
or  
touch key until you  
7) Press Set Time once again to display month.  
8) Press and hold either the  
reach the correct month.  
or  
touch key until you  
9) Press Set Time once again to display date of the month  
along with day of the week at top row (which is auto-  
matic).  
10) Press and hold either the  
or  
touch key until you  
reach the correct day of the month and day of the week  
is automatically calculated and displayed at the top row.  
11) Press Run Schedule once; now the display will show the  
correct time and room temperature.  
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PROGRAMMING  
Programming Tip: Copy Program  
Automatic Schedule  
When programming your thermostat, you may copy the  
program from one day to another day or group of days using  
the Copy key. In 7 day programming mode, a day can be  
copied to another day or all six other days. In 5/1/1 day  
programming mode the weekday (Mon Fri) program can be  
copied into Sat and Sun or either Sat or Sun.  
This feature provides a method to program every day with  
the most popular time and temperature settings using one  
key. For this feature to be available, the Auto Schedule  
options (Installer/Configuration menu item 17, AS Heat, or  
item 18, AS Cool) must be selected On.  
To use Auto Schedule, press Run Schedule to be sure you  
are in normal operating mode. In SYSTEM Heat mode, use  
To copy a program from one day to another:  
1) In Set Schedule mode, enter the program for the day or  
select the day you wish to copy by pressing Advance  
Day.  
2) Press Copy. The display will show Copynext to the  
SYSTEM key and the day of the week that will be copied.  
3) Press Advance Day. The day being copied will be  
indicated and the other days will be flashing.  
4) If you wish to copy to all days skip to next step or press  
Advance Day until the day you wish to copy to is  
flashing.  
the  
or  
keys to select your Comfort Temperature.  
When your Comfort Temperatureis selected, press Auto  
Schedule key. The key will begin to flash indicating that the  
feature is ready to store your selected temperature. Press  
Auto Schedule a second time to complete the process. The  
Auto Schedule key will disappear to indicate that the Auto  
Schedule command has been accepted.  
In Heat mode the thermostat will maintain your Comfort  
Temperatureduring the Morning, Day and Evening periods  
and setback 6° for the Night. Morning period will begin at  
6:30 AM and Night period will begin at 10:30 PM.  
5) Press Copy. Copywill disappear, the day you copied  
from will disappear and the day(s) you copied to will be  
on.  
6) If you wish to copy this same program into other days,  
press Copy and repeat steps 3, 4 and 5.  
7) Press Run Schedule to return to normal operation.  
To set the Auto Schedule temperature for Cool mode, press  
SYSTEM to change the mode to Cool and repeat setting the  
temperature. In Cool mode, the thermostat will maintain your  
selected Comfort Temperaturecontinuously.  
Fill in the blank schedule on the next page then:  
The Comfort Temperaturecan be temporarily overridden by  
Enter the Heating Program  
changing the setpoint temperature using the  
or  
keys.  
1) Press the Menu button and then press Set Schedule.  
Press SYSTEM button to select either "Heat" or "Cool" in  
the system switch area indicating the active mode being  
programmed. You can switch to the other mode by  
pressing the system switch at any time.  
Once Auto Schedule has been set and the key has disap-  
peared, it can be reset in the Installer/ Configuration menu.  
Entering Fan Program  
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.  
In the Set Schedule mode, the FAN key is used to select the  
fan operation during a program period. The default state of  
the Fan key is FAN Auto (fan runs during a call for cool but  
not on a call for heat). It can be changed to FAN Prog (fan  
runs during a program period). Each press of the FAN key  
will change the mode of the fan between Auto and Prog. In  
the Run mode, when a program period that has FAN Prog  
begins, the fan will turn on and stay on during the complete  
period. The display will show FAN On Prog.  
3) Press  
selected temperature for the 1st heating period (Morning).  
4) Press or key to adjust the start time for period.  
or  
key to change the temperature to your  
The time will change in 15 minute increments.  
5) Press FAN to select Auto or Prog.  
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.  
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.  
In the Run mode, pressing the FAN key will change the fan  
from Auto (default setting) to On (fan running continuously)  
or Prog. When FAN Prog is displayed, the fan will run when  
the system cycles. If the system does not cycle for more than  
60 minutes, the thermostat will turn the fan on for 10 minutes  
and off for 20 minutes to improve indoor air quality. If the  
display shows FAN On Prog to indicate the program period  
has the fan programmed to run, FAN Prog will override the  
programmed setting until Run Schedule is pressed or the  
next schedule period begins.  
Enter the Cooling Program  
1) Press the SYSTEM button until the Cool icon appears.  
2) Follow Enter Heating Program instructions for entering  
cooling times and temperatures.  
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PROGRAMMING  
Energy Saving Factory Pre-Program  
The 1F95-1277 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  
78°F  
Cooling  
Program  
6:00 AM  
75°F  
8:00 AM  
83°F  
5:00 PM  
75°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 1F95-1277 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)  
Fan  
Fan  
Fan  
Fan  
6:00 AM  
70°F Auto 8:00 AM  
62°F Auto 5:00 PM  
70°F Auto 10:00 PM 62°F Auto  
MON  
TUE  
WED  
THU  
FRI  
6:00 AM  
6:00 AM  
70°F Auto 8:00 AM  
70°F Auto 8:00 AM  
62°F Auto 5:00 PM  
62°F Auto 5:00 PM  
70°F Auto 10:00 PM 62°F Auto  
70°F Auto 10:00 PM 62°F Auto  
SAT  
SUN  
Cooling  
Program  
Wake Up  
(Morning)  
Leave For Work  
(Day)  
Return Home  
(Evening)  
Go To Bed  
(Night)  
Fan  
Fan  
Fan  
Fan  
6:00 AM  
75°F Auto 8:00 AM  
83°F Auto 5:00 PM  
75°F Auto 10:00 PM 78°F Auto  
MON  
TUE  
WED  
THU  
FRI  
6:00 AM  
6:00 AM  
75°F Auto 8:00 AM  
75°F Auto 8:00 AM  
83°F Auto 5:00 PM  
83°F Auto 5:00 PM  
75°F Auto 10:00 PM 78°F Auto  
75°F Auto 10:00 PM 78°F Auto  
SAT  
SUN  
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PROGRAMMING  
Wired Remote Temperature Sensing  
One remote temperature sensor can be installed indoor or  
outdoor and connected to the thermostat by a maximum  
cable length of 100 meters (300 feet). Terminals +, S and -  
on the terminal block allow connection of the remote sensor.  
The thermostat must have 24 VAC Common connection to  
terminal C for the remote sensor to operate. The remote  
sensor can be enabled or disabled in the Installer/Configura-  
tion menu, item 25.  
Example: Local sensor temperature is 80° and the remote  
sensor is 70°.  
If weight is selected H4, the averaged temperature of 72° will  
be displayed.  
(1 x 80) + (4 x 70) / 5 = 72°  
If weight is selected A2, the average temperature of 73° will  
be displayed.  
(1 x 80) + (2 x 70) / 3 = 73.3°  
When remote sensor, Remote, is selected Off (factory  
default), no remote sensor is enabled. When remote sensor  
is selected On, the next step is to select the remote as  
indoor, Remote In, or outdoor, Remote Outdoor. If the  
remote is selected as Remote In, an additional step will be to  
select if the temperature shown on the display will be from  
the thermostat, LS On, or the remote sensor Ls Off.  
If weight is selected L1, the average temperature of 75° will  
be displayed.  
(1 x 80) + (1 x 70) / 2 = 75°  
The example shows that the weight selected would prioritize  
the overall averaged temperature between the two sensors.  
The high weight selection caused the remote sensor to have  
a higher influence in the calculated temperature average  
than the local sensor and the low weight selection caused  
the remote sensor to have less influence.  
In normal operation, when a remote sensor is enabled the  
time digits of the display will alternate between the time and  
the remote temperature for three seconds each. Above the  
remote temperature will be Remote, for indoor sensor or  
Outdoor Remote, for outdoor sensor. If the remote sensor is  
an indoor sensor and the local display has been disabled,  
the temperature displayed as the room temperature will be  
the remote sensor temperature.  
Dual Fuel Temperature Setpoint  
When the thermostat is configured for Heat Pump mode and  
an outside remote sensor is installed, the thermostat can  
monitor the outside temperature. When the outside tempera-  
ture falls below a user selectable temperature, the thermostat  
will switch to gas heat and shut down the compressor. This  
eliminates the need for a fossil fuel kit.  
Sensing Range:  
Outdoor temperature range is -40 to 140oF  
Indoor temperature range is 32 oF to 99oF  
The user selectable temperature is called the dual fuel  
temperature setpoint, dF and is set in the Installer/Configura-  
tion menu, item 26. The dual fuel temperature setpoint can  
be set to a temperature of 5 through 50. A selection of 5  
(default setting) disables this feature and menu selection of  
Cd will not be available.  
Weight of Remote Reading:  
The thermostat is designed to receive the temperature of the  
indoor remote sensor and average, or weight, it with the local  
sensor in the thermostat for each program period. The  
averaging will be active only when the local sensor and the  
indoor remote sensor are both functional and enabled in the  
Installer/Configuration menu.  
After the dual fuel temperature setpoint is set above 5 and  
is pressed, a delay, Cd, can be set for compressor shutdown  
after the auxiliary stage is energized. This delay can be set  
from 0 seconds to 99 seconds to minimize the time that the  
system may blow cooler air until the alternate source of heat  
comes on. Default setting for delay is 60. When setting the  
When the thermostat is in the Set Schedule mode, the weight  
of the indoor sensor will be shown in the current temperature  
digits of the display. The weight will show as A2 (average  
and default), H4 (high) or L1 (low). Pressing the  
and  
delay if the  
or  
keys are held depressed, the setpoint  
keys at the same time will change the weight for the program  
period. The weight of the local sensor is fixed.  
will increase or decrease at the rate of one degree every half  
second for the first three seconds and double the speed after  
three seconds.  
In normal operation of the thermostat, the current tempera-  
ture displayed will be the weighted average of the local  
sensor and the remote sensor using the formula (local  
sensor weight x local sensor temperature) + (remote sensor  
weight x remote sensor temperature) / (local sensor weight +  
remote sensor weight).  
10  
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TROUBLESHOOTING  
Reset Operation  
Note: When thermostat is reset, installer configuration menu settings and programming will reset to factory settings.  
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.  
Note: Be sure to review the installer configuration menu settings.  
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 7 (heat) or 8 (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 20 seconds. This unlocks the thermostat.  
Forgot Keypad  
Lockout Code  
11  
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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