White Rodgers 1F80 0471 Thermostat User Manual

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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.  
1F80-0471  
1F86-0471  
5/2 Day 5/1/1 Day Non-Programmable  
Non-Programmable  
APPLICATIONS  
1F86-0471 Thermostat  
THERMOSTAT APPLICATION GUIDE  
Description  
Gas or Oil Heat  
Yes  
Yes  
Yes  
No  
Electric Furnace  
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 . . . . . . . . . . . . . . . . -4° to +150°F (-20° 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 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. 37-6749A  
0604  
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INSTALLATION  
Once fully down, snap the door back into position. To  
replace the batteries, set system to OFF, following the  
instructions above.  
WARNING  
!
Thermostat installation and all components of the  
control system shall conform to Class II circuits per  
the NEC code.  
Figure 1 – Battery door shown open  
Remove Old Thermostat  
“AA” Alkaline Batteries  
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.  
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  
optional battery back-up. When battery power remaining is  
approximately half the will be displayed. If the home is  
going to be unoccupied for an extended period (over 3  
months ) and is displayed, the batteries should be  
replaced before leaving. When Change is displayed,  
install fresh “AA” alkaline batteries immediately. The setpoint  
temperature will offset by 10 degrees (10 degrees cooler in  
heat mode / 10 degrees warmer in Cool mode) when less  
than two months of battery life remain. (If offset occurs the  
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  
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.  
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.  
5. Connect wires to terminal block on base.  
normal setpoint can be manually reset with  
or  
, if  
batteries are not replaced another offset will occur within two  
days).  
Figure 2 – Thermostat base and rear view of thermostat  
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.  
Mounting  
Hole  
Mounting  
Hole  
7. Carefully line the thermostat up with the base and snap  
into place.  
Place Level  
across  
Place Level  
across  
Mounting Tabs  
(for appearance only)  
Mounting Tabs  
(for appearance only)  
SS/HP Switch  
(Conventional or Heat Pump Selection)  
The SS/HP switch is factory set to the SS position. In this  
position, 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).  
Electric/Gas Switch (Fan Option)  
The ELEC/GAS 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.  
GAS  
ELEC  
SS  
HP  
If your system requires that the thermostat power the  
circulator 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.  
WIRING CONNECTIONS  
Refer to equipment manufacturers' instructions for specific  
system wiring information. After wiring, see CONFIGURA-  
TION section for proper thermostat configuration.  
TERMINAL DESIGNATION DESCRIPTIONS  
When the thermostat is configured for Heat Pump, the  
thermostat will always power the circulator fan on a call for  
heat in the HEAT mode.  
Terminal  
Designation Description  
O/B . . . . . Changeover valve for heat pump  
Y . . . . . . Compressor Relay  
Batteries  
2 "AA" alkaline batteries are included in the thermostat. To  
install 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.  
W . . . . . . Heat Relay  
G . . . . . . Fan Relay  
RH . . . . . Power for Heating  
RC . . . . . Power for Cooling  
C . . . . . . Common wire from secondary side of cooling  
system transformer or heat only system transformer  
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THERMOSTAT QUICK REFERENCE  
Figure 4 – Home Screen Display  
Home Screen Description  
Room  
Time  
Temperature  
Setting  
Temperature  
Day of Week  
Displays the power level of the  
2 "AA" batteries:  
indicates good power level.  
indicates batteries at about  
Temperature Up/Down  
HOLD Button  
half power. “Change  
” indicates  
batteries are low and should be  
replaced with 2 new “AA” Alkaline  
batteries.  
SYSTEM  
Indicator  
SYSTEM  
Button  
FAN  
Indicator  
FAN  
Button  
MENU/SCHEDULE/RUN  
Button  
Figure 5 – Programming & Configuration Items  
2
1
4
8
3
10  
7
9
5
6
Programming and Configuration Items  
Flame icon ( ) is displayed when the system is in  
HEAT mode. Snowflake icon ( ) is displayed when the  
system is in COOL mode.  
Displays Fan Mode (On, Auto) or "Run" in Menu  
mode or "Saving" in Cool SavingsTM Mode.  
1
2
3
6
Displays "Run Schedule", "Schedule", or "Menu".  
Displays "Save" when Cool SavingsTM is working.  
7
8
9
The word HOLD is displayed when the thermostat is  
in the HOLD mode. Temp HOLD is displayed when  
the thermostat is in a Temporary HOLD mode.  
Displays "Heat Pump" when system is configured  
as Heat Pump thermostat.  
Displays Change Filter when the system has run for  
the programmed filter time period as a reminder to  
change or clean your filter.  
Displays "Hold" in programmable mode when in "Hold"  
mode. Displays Light Bulb in non-programmable  
mode.  
10  
Displays "Set" for setpoint when in Run Program mode.  
4
Displays System Mode (Heat, Cool, Auto, Off) or  
5
Time in menu mode.  
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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.  
INSTALLER/CONFIGURATION MENU  
MENU  
PRESS  
DISPLAYED  
Press  
or  
to  
REF. HP SS BUTTON (FACTORY DEFAULT) select from listed options  
COMMENTS  
1
2
3
1
2
3
MENU  
MENU  
On (Cool O)  
P (2)  
Heat b On  
P 3, P 0  
Reversing Valve Output (Heat Pump switch S8  
must be in the Heat Pump HP position)  
1
2
Selectable Programs Per Week  
(For programmable thermostat only)  
MENU Cool Saving CS (OFF)  
CS (3)  
Cool Saving CS On  
6, 5, 4, 2, 1  
Select Cool Savings on or off  
Selects Cool Savings value 1 (low) to 6 (high)  
4
5
6
7
4
3
4
5
MENU  
MENU  
MENU  
MENU  
E (On)  
E OFF  
Selects Energy Management Recovery (EMR)  
on or off  
CR Heat  
(ME)  
FA, SL  
SL  
Adjustable Anticipation (Heat) (only when  
heat pump switch is at the SS position)  
CR Cool  
(FA)  
Adjustable Anticipation (Cool) (only when  
heat pump switch is at the SS position)  
5
CR Heat Pump  
(FA)  
SL  
Adjustable Anticipation (Heat Pump) (only  
when heat pump switch is at the HP position)  
8
9
6
7
6
7
MENU  
MENU  
CL (OFF)  
CL On  
Compressor Lockout Time  
Auto Heat  
Cool Off  
Heat Cool Off,  
Heat Off with Fan icon,  
Heat Off without Fan  
icon, Cool Off,  
System Mode Configuration  
with Automatic Changeover  
Auto Off  
Cool Off Heat  
Heat Off with Fan icon,  
Heat Off without  
System Mode Configuration  
without Automatic Changeover  
Fan icon, Cool Off  
10  
11  
8
9
8
9
MENU  
MENU  
L (On)  
0 HI  
L OFF  
Selects Display Light on or off  
1 HI, 2 HI, 3HI, 4 HI,  
Adjustable Ambient Temperature Display  
1 LO, 2 LO, 3 LO, 4 LO  
12  
13  
10 10 MENU  
F
C
Selects Fahrenheit/Celcius Temperature Display  
Selects Filter Change-out Indicator  
11 11 MENU Change Filter (OFF)  
Change Filter 200 h  
Change Filter On  
25 h to 1975 h in  
25-hour increment  
When on, selects time in 25 hour increments  
14  
12 12  
RUN  
Returns to Normal Operation  
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 setpoint  
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 Savings™ feature is active and making adjust-  
ments, the display will show “Save” next to the setpoint  
temperature. The amount of the adjustments to the  
setpoint temperature is dependent on the Cool Savings™  
value 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.  
1) Select Reversing Valve Output (Heat Pump switch S8  
must be set at HP) – 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 COOL. If the thermostat you are replac-  
ing or the heat pump being installed with this thermostat  
requires a "B" terminal, to energize the changeover relay  
in HEAT, the O/B option should be set at "B" position.  
2) Program Options: 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 Cool Savings™: With Cool Savings™ enabled,  
the thermostat will make small adjustments to the setpoint  
temperature during periods of high demand to reduce AC  
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INSTALLER/CONFIGURATION MENU  
4) Energy Management Recovery: (this step is skipped if  
configured to be non-programmable).  
9) System Mode Configuration – This thermostat is  
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 with fan (Off Heat), Heat only without fan,  
Auto only (Auto Off), and Cool only (Cool Off).  
10)Select Backlight Display – The display backlight  
improves display contrast in low lighting conditions. When  
the "C" terminal is powered, selecting backlight CdL 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.  
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.  
Example: If E On is selected and have your heating 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 set  
temperature.  
5, 6 & 7) Cycle Rate Selection – The factory default setting  
for Heat is medium cycle (ME), which cycles heat at  
approximately 0.6°F. If you prefer fast or slow cycle,  
11)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.  
press the  
or  
key to change to FA or SL. Heat  
will cycle at approximately 0.4 or 1.2°F. For Heat Pump  
and Cool, the default setting is fast (FA CR), which cycles  
heat and cool at 1.2°F. If you prefer slow cycle, press  
12)Select F° or C° Readout – Changes the display readout  
to Centigrade or Fahrenheit as required.  
or  
to change to SL. Cool or heat will cycle at  
1.7°F. For Cool the default setting is fast cycle (FA CR),  
13)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 Menu button. In a typical application,  
200 hours of run time is approximately 30 days.  
which cycles cool at approximately 1.2°F.  
If you prefer slow cycle, press the  
or  
key to  
change to SL, cool will cycle at approximately 1.7°F.  
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.  
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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 and 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 until the next programmed  
time. 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  
and cool temperatures. When using AUTO, be sure to set the or Cool, whichever ran last. If it switches to heat but you want  
Cooling temperatures more than 1° Fahrenheit higher than  
the heating temperature.  
cool, or it changes to cool but you want heat, press both  
and  
buttons simultaneously to change to the other  
mode.  
Manual Operation for Non-Programmable  
Thermostats (1F86 or 1F80)  
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 (For Programmable Model Only)  
Set Current Time and Day  
Enter the Heating Program  
1) Press Menu and then Time button once. The display  
will show the hour only.  
1) 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).  
2) Press the Menu button for at least 5 seconds and then  
press Schedule.  
3) Press Time once again. The display window will show  
the minutes only.  
3) The top of the display will show the day(s) being pro-  
grammed. The time and temperature (flashing) are also  
displayed. "1" will also be displayed to indicate  
the period.  
4) Press and hold either the  
the correct minutes.  
or  
key until you reach  
5) Press Time once again. The display will show the day  
of the week.  
4) Press  
or  
key to change the temperature to your  
selected temperature for the 1st heating period.  
5) Press Time button, time will flash.  
6) Press  
1st period.  
6) Press the  
of the week.  
or  
key until you reach the current day  
or  
key to adjust the start time for the  
7) Press Run to exit the Time mode.  
7) The time will change in 15 minute increments.  
8) After you have set the time and the temperature for  
the period to begin, press Schedule to advance to the  
next program period.  
9) Repeat steps 2 through 8 until all of the program times  
and temperatures are set for all program periods on  
that day.  
10)Press Schedule to the next day and repeat steps 2  
through 9.  
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.  
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 (For Programmable Model Only)  
Energy Saving Factory Pre-Program  
The 1F80-0471 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 RUN 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  
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  
Planning Your Program – Important  
The Heating and Cooling Program schedules below allow you to pencil in your own program times and temperatures.  
The 1F80-0471 comes configured for 5/2 day programming and can also be configured for 5+1+1 programming (see configu-  
ration 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  
8:00 AM  
8:00 AM  
62°F  
62°F  
62°F  
5:00 PM  
5:00 PM  
5:00 PM  
70°F  
10:00 PM  
10:00 PM  
10:00 PM  
62°F  
62°F  
62°F  
Mo-Fr  
Sat-Sun  
or Sat  
6:00 AM  
6:00 AM  
70°F  
70°F  
Sun  
5+1+1 only  
Cooling  
Program  
Wake Up  
(Period 1)  
6:00 AM  
Leave For Work  
(Period 2)  
Return Home  
(Period 3)  
Go To Bed  
(Period 4)  
75°F  
75°F  
75°F  
8:00 AM  
8:00 AM  
8:00 AM  
83°F  
83°F  
83°F  
5:00 PM  
5:00 PM  
5:00 PM  
75°F  
10:00 PM  
10:00 PM  
10:00 PM  
83°F  
83°F  
83°F  
Mo-Fr  
Sat-Sun  
or Sat  
6:00 AM  
6:00 AM  
75°F  
75°F  
Sun  
5+1+1 only  
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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  
go blank and then all segments will be displayed momentarily.  
and  
and the FAN button simultaneously. The thermostat should  
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), 7 (cool) or 8 (heat pump). 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)  
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  

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