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80 Series Thermostat with  
Automatic Heat/Cool Changeover Option  
Single Stage or Heat Pump  
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.  
5/2 Day  
5/1/1 Day  
Non-Programmable  
1F80ST-0471  
1F86ST-0471  
Non-Programmable  
APPLICATIONS  
1F80ST-0471 Thermostat  
with Spanish Display  
THERMOSTAT APPLICATION GUIDE  
Description  
Gas or Oil Heat  
Yes  
Electric Furnace  
Yes  
Yes  
No  
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  
No  
Yes  
Yes  
Yes  
Yes  
Yes  
Millivolt Heat Only Systems – Floor or Wall Furnaces  
Cool Only Systems  
Hydronic (Hot Water) Zone Heat – 2 Wires  
Hydronic (Hot Water) Zone Heat – 3 Wires  
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.0 A per terminal, 1.5A maximum all terminals combined  
Setpoint Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45° to 90°F (7° to 32°C)  
Differential (Single Stage) . . . . . . . . . . . . . . . . . . . . Heat 0.6°F; Cool 1.2°F (adjustable)  
Differential (Heat Pump) . . . . . . . . . . . . . . . . . . . . . Heat 1.2°F; Cool 1.2°F (adjustable)  
Operating Ambient. . . . . . . . . . . . . . . . . . . . . . . . . . 32° to +105°F (0° to +41°C)  
Operating Humidity . . . . . . . . . . . . . . . . . . . . . . . . . 90% non-condensing max.  
Shipping Temperature Range . . . . . . . . . . . . . . . . . -40° to +150°F (-40° to +65°C)  
Dimensions Thermostat. . . . . . . . . . . . . . . . . . . . . . 3.4"H x 4.4"W x 1.3"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 damage,  
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  
send product containing mercury.  
Index  
Page  
Installation  
2
3
3
4
6
6
8
Wiring Connections  
Thermostat Quick Reference  
Installer Configuration Menu  
Operating Your Thermostat  
Programming  
Troubleshooting  
PART NO. 37-6952A  
0827  
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INSTALLATION  
Batteries  
WARNING  
!
2 "AA" alkaline batteries are included in the thermostat. To in-  
stall the batteries, pull the battery door as shown by the arrow  
and lift open. Using the polarity indicated inside the battery  
door, insert the batteries. To close the battery door, swing the  
door down while pulling in the direction of arrow. Once fully  
down, snap the door back into position.  
Thermostat installation and all components of the control  
system shall conform to Class II circuits per the NEC  
code.  
Remove Old Thermostat  
To replace the batteries, set system to OFF, following the  
instructions above.  
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.  
Figure 1 – Battery door shown open  
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.  
“AA” Alkaline Batteries  
Installing New Thermostat  
1. Pull the thermostat body off the thermostat base. Forcing  
or prying on the thermostat will cause damage to the unit.  
Thermostat can be powered by system AC power or Battery.  
If  
is displayed, the thermostat is battery powered. If  
is not displayed, thermostat is system powered with op-  
tional battery back-up. When battery power remaining is ap-  
proximately half, the will be displayed. When "Cambiar  
" is displayed, install fresh “AA” alkaline batteries imme-  
diately. For best results, replace all batteries with a premium  
brand alkaline battery such as Duracell® or Energizer®. We  
recommend replacing batteries every 2 years. If the home is  
going to be unoccupied for an extended  
2. Place base over hole in wall and mark mounting hole  
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 snugly,  
use plastic screw anchors to secure the base.  
4. Fasten base snugly to wall using mounting holes shown  
in Figure 2 and two mounting screws. Leveling is for  
appearance only and will not affect thermostat operation.  
period (over 3 months) and  
is displayed, the batter-  
ies should be replaced before leaving. When less than two  
months of battery life remain, the setpoint temperature will  
offset by 10 degrees (10 degrees cooler in Frio mode / 10  
degrees warmer in Frio mode). If offset occurs, the normal  
5. Connect wires to terminal block on base.  
6. Push excess wire into wall and plug hole with a fire resis-  
tant material (such as fiberglass insulation) to prevent  
drafts from affecting thermostat operation.  
setpoint can be manually reset with  
or  
. Another  
7. Carefully line the thermostat up with the base and snap  
into place.  
offset will occur within two days if batteries are not replaced.  
Figure 2 – Thermostat base and rear view of thermostat  
SS/HP Switch  
(Conventional or Heat Pump Selection)  
The SS/HP switch is factory set to the SS position. In this posi-  
tion, thermostat is configured as conventional single stage. If  
you have a single stage heat pump system, switch SS/HP to  
HP position (see figure 2).  
Mounting  
Hole  
Mounting  
Hole  
Place Level  
across  
Mounting Tabs  
(for appearance only)  
Place Level  
across  
Mounting Tabs  
(for appearance only)  
Gas/Elec Switch (Fan Option)  
The GAS/ELEC switch is factory set to the GAS position. In  
this position, the thermostat will not power the circulator fan on  
a call for heat, but will power the circulator on a call for cool.  
If your system requires that the thermostat power the circula-  
tor fan on a call for heat, this switch should be set to the ELEC  
position. Typically, gas and oil heating systems do not require  
the thermostat to power the circulator fan during a call for heat.  
If your heat is gas or oil, the switch should be set to the GAS  
position.  
GAS  
ELEC  
SS/HP  
Switch  
SS  
HP  
When the thermostat is configured for Heat Pump, the thermo-  
stat will always power the circulator fan on a call for heat in the  
HEAT mode.  
GAS/ELEC Switch  
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WIRING CONNECTIONS  
Refer to equipment manufacturers' instructions for specific system wiring information. After wiring, see CONFIGURATION  
section for proper thermostat configuration. Refer to 37-6754 for 1F80-0471/1F86-0471 wiring diagram specifications.  
TERMINAL DESIGNATION DESCRIPTIONS  
Designation Description  
Designation Description  
Terminal  
Terminal  
O/B.................(SS) Power closed for 3 wire zone  
(HP) Changeover valve for heat pump  
RH...................Power for Heating  
RC...................Power for Cooling  
Compressor Relay  
Heat Relay  
Y......................  
W....................  
G.....................  
C.....................Common wire from secondary side  
of cooling system transformer or  
Fan Relay  
heat only system transformer  
THERMOSTAT QUICK REFERENCE  
Figure 4 – Home Screen Display  
Home Screen Description  
Room  
Temperature  
Time  
Setting  
Day of Week  
Temperature  
Displays the power level of the  
2 “AA” batteries:  
indicates good power level.  
indicates batteries at about  
Temperature Up/Down  
half power. “Cambiar  
(Change ) indicates batteries  
RETENER  
Button  
are low and should be replaced  
with 2 new premium brand “AA”  
Alkaline batteries.  
SISTEMA  
Indicator  
SISTEMA  
Button  
VENT  
Indicator  
VENT  
Button  
MENU/PROGRAMA/ARRANCAR  
Button  
Figure 5 – Programming & Configuration Items  
Programming and Configuration Items  
1
Flame icon ( ) is displayed when the system is in  
CALOR mode. Snowflake icon ( ) is displayed when  
the system is in FRIO mode.  
2
1
4
The word RETENER is displayed when the thermostat  
is in the RETENER (Hold) mode. Temporal RETENER  
is displayed when the thermostat is in a Temporal  
RETENER (Temporary Hold) mode.  
2
8
3
10  
7
9
5
Displays "Cambiar Frio" (Change Filter) when the  
system has run for the programmed filter time period  
as a reminder to change or clean your filter.  
3
4
Displays "Ajuste" (Set) for setpoint when in Run  
Program mode.  
Displays System Mode (Calor, Frio, Auto, Off) or Hora  
(Time) in menu mode.  
5
6
6
Displays Fan Mode (On, Auto) or "Arrancar" (Run) in  
Menu mode of "Ahorra" (Saving) in Cool SavingsTM  
Mode.  
Displays "Bomba de Calor" (Heat Pump) when  
system is configured as Heat Pump thermostat.  
9
Displays "Retener" (Hold) in programmable mode  
when in "Retener" (Hold) mode. Displays Light Bulb  
in non-programmable mode.  
10  
Displays "Arrancar Programa" (Run Schedule),  
"Programa" (Schedule), or "Menu".  
Displays "Guardar" (Save) when Cool SavingsTM is  
7
8
working.  
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INSTALLER/CONFIGURATION MENU  
Press the Menu button for at least 5 seconds. The display will show item #1 in the table below. Press Menu to advance to the  
next menu item. Press  
or  
to change a menu item. Shaded items are not available on 1F86.  
INSTALLER/CONFIGURATION MENU  
Press  
or  
to  
MENU  
REF  
PRESS  
BUTTON  
DISPLAYED  
(FACTORY DEFAULT)  
select from listed options  
HP SS  
COMMENTS  
1
2
3
1
MENU  
On (Frio O)  
Calor b On  
Reversing Valve Output (SS/HP switch must  
be in the Heat Pump HP position)  
Selectable Programs Per Week  
(For programmable thermostat only)  
Select Frio Ahorra (Cool Savings) on or off  
2
3
1
2
MENU  
MENU  
P (2)  
P 3, P 0  
Frio Ahorra CE  
(OFF)  
Frio Ahorra CE On  
MENU  
MENU  
Frio Ahorra (3)  
E (On)  
6, 5, 4, 2, 1  
E OFF  
Selects Frio Ahorra value 1 (low) to 6 (high)  
Selects Energy Management Recovery (EMR)  
on or off  
Adjustable Anticipation (Calor) (only when  
SS/HP switch is at the SS position)  
Adjustable Anticipation (Frio) (only when  
SS/HP switch is at the SS position)  
4
5
6
4
3
4
5
MENU  
MENU  
CR Calor  
(ME)  
CR Frio  
(AL)  
AL, bA  
bA  
7
5
MENU  
CR Bomba de Calor  
(AL)  
bA  
Adjustable Anticipation (Bomba de Calor)  
(only when SS/HP switch is at the HP position)  
8
9
6
7
6
7
MENU  
MENU  
Cd (OFF)  
Auto Calor  
Frio Off  
Cd On  
Compressor Lockout Time  
System Mode Configuration  
with Automatic Changeover  
Calor Frio Off,  
CalorOffwithVenticon,  
Calor Off without Vent  
icon, Frio Off,  
Auto Off  
10  
11  
8
9
8
9
MENU  
MENU  
L (On)  
0
L OFF  
Selects Display Light on or off  
1 AL, 2 AL, 3 AL, 4  
AL,  
Adjustable Ambient Temperature Display  
1 bA, 2 bA, 3 bA, 4 bA  
12  
13  
10 10  
11 11  
MENU  
F
C
Selects Fahrenheit/Celsius Temperature  
Display  
MENU  
MENU  
Cambiar Filtro (OFF)  
Cambiar Filtro 200 h  
Cambiar Filtro On  
Selects Filter Change-out Indicator  
25 h to 1975 h in  
25-hour increment  
When on, selects time in 25 hour increments  
14  
12 12  
Arrancar  
Returns to Normal Operation  
of adjustment. Default value is 3 (3°). In normal operation  
"Ahorro" will appear under "Vent"  
1. Select Reversing Valve Output (SS/HP switch must  
be set at HP, omitted if SS/HP switch is SS Position)  
– The O/B option is factory set at "O" position. This will  
accommodate the majority of heat pump applications,  
which require the changeover relay to be energized in  
FRIO. If the thermostat you are replacing or the heat pump  
being installed with this thermostat requires a "B" terminal,  
to energize the changeover relay in CALOR, the O/B  
option should be set at "B" position.  
Cool Savings is an optional energy saving feature that  
can reduce your cooling costs. It is based on the principal  
that lower indoor humidity makes a slightly higher  
temperature feel more comfortable. Frio Ahorro operates  
during periods of high demand which normally occur  
on the hottest summer days when the cooling system  
may run for hours to reach the thermostat setting. Long  
cooling run times also lower the indoor humidity. Frio  
Ahorro very slowly adjusts the setpoint temperature to  
make the setpoint closer to the displayed temperature, to  
a maximum number of degrees selected. Adjusting the  
setpoint temperature over a long cooling run time allows  
the system to reach your set temperature and turn off.  
The room temperature will actually be higher than the  
thermostat displays, but the reduction in humidity will allow  
comfort at the slightly higher temperature. When Frio  
Ahorro is making adjustments, "Save" will show next to  
the setpoint temperature and the room temperature may  
vary within the adjustment range selected.  
2. Program Options 1F80 only – This control can be  
configured for 5/2 day or 5/1/1 day programming or non-  
programming mode. The default setting is P2, indicating  
5/2 day programming. The programs per week can be  
toggled to P3 or P0 by pressing the  
or  
keys. A  
selection of 0 Days for non-programmable will eliminate  
the need for EMR, and that step in the menu will be  
skipped.  
3. Select Frio Ahorro (Cool Savings™) and value  
– Selects the Frio Ahorro feature On or OFF. If selected  
On, press MENU to select the amount of adjustment  
for the feature in Frio mode with 1 (1°) being the least  
amount of adjustment and 6 (6°) being the most amount  
If this feature is selected OFF, no change will occur when  
the cooling system is continually running during periods of  
high demand.  
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INSTALLER/CONFIGURATION MENU  
4. Energy Management Recovery: (this step is skipped if  
9. System Mode Configuration – This thermostat is  
configured for Calor and Frio with Auto changeover  
(SISTEMA switch with Frio Off Calor Auto) default. It can  
also be configured for Calor and Frio (Frio Off Calor),  
Calor only with fan (Off Calor), Calor only without fan,  
Auto only (Auto Off), and Frio only (Frio Off).  
configured to be non-programmable).  
Energy Management Recovery (E) On enables 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.  
10.Select Backlight Display – The display backlight  
improves display contrast in low lighting conditions. When  
the "C" terminal is powered, selecting backlight L ON will  
keep the light on continuously. Select backlight OFF will  
keep the light on momentarily after any key is pressed.  
When the "C" terminal is not powered, the light will  
be on momentarily after any key is pressed no matter  
whether the backlight is selected ON or OFF.  
Example: If E On is selected and have your heating  
programmed 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 setpoint will change to 70° at 6:35 AM. Cooling  
allows more time per degree, because it takes longer to  
reach set temperature.  
11.SelectTemperature 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  
calibrated 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.  
5, 6 & 7. Cycle Rate Selection – The factory default settings  
with SS/HP switch in SS position for Heat is medium  
cycle (ME) and Cool is fast cycle (AL). For Heat Pump  
(HP), the default setting is fast cycle (AL).  
To change cycle rate, press the  
or  
key.  
Cycle rate differentials for different settings are:  
MODE  
Fast  
AL  
Medium  
ME  
Slow  
bA  
12.Select F° or C° Readout – Changes the display readout  
to Centigrade or Fahrenheit as required.  
Heat (SS)  
0.4°F  
1.2°F  
1.2°F  
0.6°F  
1.8°F  
1.7°F  
1.7°F  
13.Select Filter Replacement Reminder and Set Run Time  
Select the "Cambiar Filtro" (Change Filter) reminder On  
or OFF. If selected On, press MENU to select the time  
period from 25 to 1975 hours in 25 hours increments.  
In a typical system, 200 hours (default) of run time is  
approximately 30 days. After the selected time of blower  
operation, the thermostat will display "Cambiar Filtro"  
(Change Filter) as a reminder to change or clean your air  
filter. When "Cambiar Filtro" (Change Filter) is displayed,  
press MENU button to clear the display and restart the  
time to the next filter change.  
Cool (SS)  
Heat Pump (HP)  
8. Select Compressor Lockout CL OFF or ON – 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 newer  
compressors 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.  
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OPERATINGYOUR THERMOSTAT  
IMPORTANT!  
Choose the Vent Setting (Auto or On)  
Set the VENT Switch to Auto or On.  
Manual Operation (Bypassing the Program)  
Programmable Thermostats  
Press  
or  
and the Retener button and adjust the  
Vent Auto is the most commonly selected setting and runs  
temperature wherever you like. This will override the program.  
The Retener feature bypasses the program and allows you  
to adjust the temperature manually, as needed. Whatever  
temperature you set in Retener will be maintained 24 hours  
a day, until you manually change the temperature or press  
Arrancar Programa (Run Schedule) to cancel Retener and  
resume the programmed schedule.  
the fan only when the heating or cooling system is on.  
Vent On runs the fan continuously for increased air circulation  
or to allow additional air cleaning.  
Choose the System Setting  
(Calor, Off, Frio, Auto)  
Press the SISTEMA button to select:  
Program Override (Temporary Override)  
Calor: Thermostat controls only the heating system.  
Off: Heating and Cooling systems are off.  
Frio: Thermostat controls only the cooling system.  
Press  
or  
buttons to adjust the temperature. This will  
override the temperature setting until the next programmed  
time. To cancel the temporary setting at any time and return  
to the program, press Arrancar Programa. If the SISTEMA  
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 but you want heat, press both  
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.  
and  
mode.  
buttons simultaneously to change to the other  
Manual Operation for Non-Programmable Ther-  
mostats Mode  
Press the SISTEMA 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 SISTEMA button to select Auto to allow  
the thermostat to automatically change between Heat and  
Cool.  
PROGRAMMING (For Programmable Model Only)  
5. Press Hora button, time will flash.  
6. Press or key to adjust the start time for the  
1st period.  
Set Current Time and Day  
1. Press Menu and then Hora button once. The display  
will show the hour only.  
7. The time will change in 15 minute increments.  
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).  
8. After you have set the time and the temperature for  
the period to begin, press Schedule to advance to the  
next program period.  
3. Press Hora once again. The display window will show  
the minutes only.  
9. Repeat steps 2 through 8 until all of the program times  
and temperatures are set for all program periods on  
that day.  
4. Press and hold either the  
the correct minutes.  
or  
key until you reach  
10.Press Programa to the next day and repeat steps 2  
5. Press Hora once again. The display will show the day  
through 9.  
of the week.  
11.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.  
6. Press the  
of the week.  
or  
key until you reach the current day  
7. Press Arrancar to exit the Time mode.  
Enter the Cooling Program  
1. Press SISTEMA button to select "Frio" in the system  
Enter the Heating Program  
1. Press SISTEMA button to select "Calor" in the system  
switch area indicating the active mode being programmed.  
switch area indicating the active mode being programmed.  
2. Follow Enter Heating Program instructions for entering  
2. Press the Menu button and then press Programa.  
cooling times and temperatures.  
3. The top of the display will show the day(s) being  
programmed. The time and temperature (flashing) are also  
displayed. "1" will also be displayed to indicate the period.  
4. Press  
or  
key to change the temperature to your  
selected temperature for the 1st heating period.  
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PROGRAMMING (For Programmable Model Only)  
Energy Saving Factory Pre-Program  
The 1F80ST-0471 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 Arrancar button.  
The table below shows the factory set heating and cooling schedule for all days of the week.  
Wake Up  
(Period 1)  
Leave For Work  
(Period 2)  
Return Home  
(Period 3)  
Go To Bed  
(Period 4)  
Heating  
Program  
6:00 AM  
6:00 AM  
70°F  
75°F  
8:00 AM  
8:00 AM  
62°F  
83°F  
5:00 PM  
5:00 PM  
70°F  
75°F  
10:00 PM  
10:00 PM  
62°F  
78°F  
Cooling  
Program  
PlanningYour Program – Important  
The Heating and Cooling Program schedules below allow you to pencil in your own program times and temperatures.  
The 1F80ST-0471 comes configured for 5/2 day programming and can also be configured for 5+1+1 programming (see  
configuration section).  
Factory settings are listed on Monday through Friday, Saturday and Sunday. If you are re-programming a 5/2 day schedule,  
pencil in your own times and temperatures directly below the factory times and temperatures.  
If you are re-programming a 5+1+1 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 5/2 Day and 5+1+1 Day Program  
Heating  
Program  
Wake Up  
(Period 1)  
Leave For Work  
(Period 2)  
Return Home  
(Period 3)  
Go To Bed  
(Period 4)  
6:00 AM  
70°F  
70°F  
70°F  
8:00 AM  
62°F  
62°F  
62°F  
5:00 PM  
70°F  
70°F  
70°F  
10:00 PM  
62°F  
62°F  
62°F  
Mo-Fr  
Sat-Sun  
or Sat  
6:00 AM  
6:00 AM  
8:00 AM  
8:00 AM  
5:00 PM  
5:00 PM  
10:00 PM  
10:00 PM  
Sun  
5+1+1 only  
Cooling  
Program  
Wake Up  
(Period 1)  
Leave For Work  
(Period 2)  
Return Home  
(Period 3)  
Go To Bed  
(Period 4)  
6:00 AM  
75°F  
75°F  
75°F  
8:00 AM  
83°F  
83°F  
83°F  
5:00 PM  
75°F  
75°F  
75°F  
10:00 PM  
78°F  
78°F  
78°F  
Mo-Fr  
Sat-Sun  
or Sat  
6:00 AM  
6:00 AM  
8:00 AM  
8:00 AM  
5:00 PM  
5:00 PM  
10:00 PM  
10:00 PM  
Sun  
5+1+1 only  
7
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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 thermo-  
stat 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  
and  
and the VENT button simultaneously. The  
thermostat should go blank and then all segments will be displayed momentarily.  
Symptom  
Possible Cause  
Corrective Action  
No Heat/No Cool/No 1. Blown fuse or tripped circuit breaker.  
Replace fuse or reset breaker.  
Turn switch to ON.  
Replace door panel in proper position to engage safety interlock  
or door switch.  
2. Furnace power switch to OFF.  
Fan (common  
problems)  
3. Furnace blower compartment door or  
panel loose or not properly installed.  
4. Loose connection to thermostat or system.  
Tighten connections.  
No Heat  
1. Pilot light not lit.  
Re-light pilot.  
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 assis-  
tance.  
Diagnostic: Set SISTEMA Switch to Calor and raise the set-  
point above room temperature. Within a few seconds the thermo-  
stat 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.  
3. Heating system requires service or  
thermostat requires replacement.  
No Cool  
1. Cooling system requires service or  
thermostat requires replacement.  
Same as diagnostic for No Heat condition except set the thermo-  
stat to Frio and lower the setpoint below the room temperature.  
There may be up to a five minute delay before the thermostat  
clicks in Cooling.  
Heat, Cool or Fan  
Runs Constantly  
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 ter-  
minal 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.  
2. Possible short in thermostat.  
3. Possible short in heat/cool/fan system.  
4. VENT Switch set to VENT ON.  
Thermostat Setting &  
ThermostatThermometer  
Disagree  
1. Thermostat thermometer setting  
requires adjustment.  
The thermometer can be adjusted +/- 4 degrees. See Tempera-  
ture Display Adjustment in the Configuration Menu section.  
Furnace  
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 in-  
creased cycle time, choose bA for slow cycle in the Con-  
figuration menu, step 6 (heat), 7 (cool) or 8 (heat pump).  
If an acceptable cycle rate is not achieved, contact a local  
service person for additional suggestions.  
(Air Conditioner)  
Cycles Too Fast or Too  
Slow (narrow or wide  
temperature swing)  
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