White Rodgers 875 Thermostat User Manual

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875  
Programmable Electronic Digital Thermostat  
INSTALLATION AND  
OPERATION INSTRUCTIONS  
Operator: Save these instructions for future use!  
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY  
BEFORE INSTALLING OR OPERATINGTHIS CONTROL COULD CAUSE  
PERSONAL INJURY AND/OR PROPERTY DAMAGE.  
DESCRIPTION  
• Temperature override until next program period  
• Manual program override (HOLD temperature)  
• Temporary HOLD  
Your new White-Rodgres 7-Day Digital Thermostat uses the  
technology of a solid-state microcomputer to provide precise  
time/temperaturecontrol.Thisthermostatoffersyoutheflexibility  
to design heating and cooling programs that fit your needs.  
• °F/°C convertibility  
Features:  
• Temperature range 45° to 90°F  
• RC, RH, C, W, Y, G, O and B terminals  
• Optional C terminal (Dual Power option)  
• Separate program for each day of the week with four separate  
time/temperature periods per day  
• Simultaneous heat and cool program storage  
• Preprogrammed temperature control  
• Backlit display  
• LCDcontinuouslydisplayssetpoint,andalternatelydisplays  
time and room temperature  
• B and O terminals for single stage heat pumps (no auxiliary  
heat) or damper operation  
• Program storage in case of power loss  
• 2 “AA” alkaline batteries included  
PRECAUTIONS  
WARNING  
Do not use on circuits exceeding specified voltage.  
Higher voltage will damage control and could cause  
shock or fire hazard.  
This thermostat is intended for use with a low voltage system;  
do not use this thermostat with a line voltage system. If in doubt  
about whether your wiring is millivolt, line, or low voltage, have it  
inspected by a qualified heating and air conditioning contractor  
or electrician.  
!
Do not short out terminals on gas valve or primary  
control to test. Short or incorrect wiring will damage  
thermostat and could cause personal injury and/or  
property damage.  
Do not exceed the specification ratings.  
All wiring must conform to local and national electrical codes  
and ordinances.  
This control is a precision instrument, and should be handled  
carefully.Rough handling or distorting components could cause  
the control to malfunction.  
Thermostat installation and all components of the  
system shall conform to Class II circuits per the NEC  
code.  
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.  
SPECIFICATIONS  
ELECTRICAL DATA  
APPLICATIONS  
Electrical Rating:  
For use with:  
8 to 30 VAC 50/60 Hz. or D.C.  
0.05 to 1.0 Amps (Load per terminal)  
1.5 Amps Maximum Total Load (All terminals combined)  
• Standard heat/cool or heat only systems  
• Electric heat systems  
• Gas or oil fired systems  
• Gas systems with intermittent ignition devices (I.I.D.)  
and/or vent dampers  
• Hydronic (hot water or steam) systems  
• Single-stage heat pump systems (no auxiliary heat)  
• Millivolt systems  
THERMAL DATA  
Setpoint Temperature Range:  
45°F to 90°F (7°C to 32°C)  
Operating Ambient Temperature Range:  
32°F to 105°F  
Operating Humidity Range:  
0 to 90% RH (non-condensing)  
Shipping Temperature Range:  
-4°F to 149°F  
DO NOT USE WITH:  
• Multi-stage systems  
• Systems exceeding 30 VAC and 1.5 amps  
• 3-wire zoned hydronic heating systems  
PART NO. 37-6910A  
0806  
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INSTALLATION  
REMOVE OLD THERMOSTAT  
Screw anchors  
1. Shut off electricity at the main fuse box until installation is  
complete. Ensure that electrical power is disconnected.  
2. Remove the front cover of the old thermostat. With wires  
still attached, remove wall plate from the wall. If the old  
thermostathasawallmountingplate, removethethermostat  
and the wall mounting plate as an assembly.  
3. Identify each wire attached to the old thermostat using  
the labels enclosed with the new thermostat.  
4. Disconnect the wires from old thermostat one at a time. DO  
NOT LET WIRES FALL BACK INTO THE WALL.  
5. Install new thermostat using the following procedures.  
Mounting  
holes  
ATTENTION!  
Mounting  
holes  
This product does not contain mercury. However, this product  
may replace a unit which contains mercury.  
Electric/Gas  
switch  
Do not open mercury cells. If a cell becomes damaged, do not  
touch any spilled mercury. Wearing nonabsorbent gloves, take  
upthespilledmercurywithsandorotherabsorbentmaterialand  
place into a container which can be sealed. If a cell becomes  
damaged, the unit should be discarded.  
Figure 1.Thermostat Base  
6. Push excess wire into wall and plug hole with a fire-resistant  
material(suchasfiberglassinsulation)topreventdraftsfrom  
affecting thermostat operation.  
Mercury must not be discarded in household trash. When the  
unit this product is replacing is to be discarded, place in a suit-  
able container and return to 2895 Harrison Street, Batesville,  
AR 72501 for proper disposal.  
BATTERY LOCATION  
ELECTRIC HEAT OR SINGLE-STAGE  
HEAT PUMP SYSTEMS  
2 “AA” alkaline batteries are included in the thermostat at the  
factory with a battery tag to prevent power drainage. You must  
remove the battery tag to engage the batteries.  
This thermostat is configured from the factory to operate a heat/  
cool, fossil fuel (gas, oil, etc.), forced air system. It is configured  
correctly for any system that DOES NOT require the thermostat  
to energize the fan on a call for heat.If your system is an electric  
heat or heat-pump system that REQUIRES the thermostat to  
turn on the fan on a call for heat, locate the ELECTRIC/GAS  
switch on the back of the thermostat (see fig. 1) and switch  
it to the ELECTRIC position. This will allow the thermostat  
to energize the fan immediately on a call for heat. If you are  
unsure if the heating/cooling system requires the thermostat to  
control the fan, contact a qualified heating and air conditioning  
service person.  
If “BATT” is displayed, the batteries are low and should be re-  
placed. For best results, replace all batteries with new premium  
brand batteries such as Duracell® or Energizer®. To replace  
batteries, install the batteries along the top of the base (see  
Fig. 1).The batteries must be installed with the positive (+) end  
to the left.  
HYDRONIC (HOT WATER OR STEAM)  
HEATING SYSTEMS  
This thermostat is set to operate properly with a forced-air heat-  
ing system. If you have a hydronic heating system (a system  
that heats with hot water or steam), you must set the thermostat  
to operate properly with your system. Change the second op-  
tion in the configuration menu to SL (see CONFIGURATION  
MENU, page 4).  
ATTACH THERMOSTAT BASE TO WALL  
1. Remove the packing material from the thermostat. Gently  
pull the cover straight off the base. Forcing or prying on the  
thermostat will cause damage to the unit.If necessary, move  
the electric heat switch (see ELECTRIC HEAT SYSTEMS,  
above).  
CHECK THERMOSTAT OPERATION  
If at any time during testing your system does not operate  
properly, contact a qualified service person.  
2. Connect wires beneath terminal screws on base using ap-  
propriate wiring schematic (see figs. 2 through 7).  
Turn on power to the system.  
3. Place base over hole in wall and mark mounting hole loca-  
tions on wall using base as a template.  
Fan Operation  
If your system does not have a G terminal connection, skip to  
Heating System.  
4. Move base out of the way. Drill mounting holes.  
5. Fasten base loosely to wall, as shown in fig. 1, using two  
mounting screws. Place a level against bottom of base,  
adjust until level, and then tighten screws. (Leveling is for  
appearance only and will not affect thermostat operation.)  
If you are using existing mounting holes, or if holes drilled  
are too large and do not allow you to tighten base snugly,  
use plastic screw anchors to secure subbase.  
1. Move FAN switch to ON position. The blower should begin  
to operate.  
2. Move FAN switch to AUTO position. The blower should  
stop immediately.  
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JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Hot  
‡
Y
C
B
O
G
W
RC  
RH  
THERMOSTAT  
SYSTEM  
‡
C
Y
B
O
G
W
RC  
RH  
Cooling  
System Relay System  
Fan  
Heating  
24 VAC  
120 VAC  
Neutral  
Fan  
Relay  
Heating  
System  
Hot  
HEATING  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
NOTE  
For 2-wire Heat only,  
attach to RH and W  
Hot  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Figure 2. Typical wiring diagram for  
heat only, 3-wire, single transformer systems  
COOLING TRANSFORMER  
Figure 5. Typical wiring diagram for  
heat/cool, 5-wire, two-transformer systems  
JUMPER  
WIRE  
THERMOSTAT  
‡
C
B
O
Y
G
W
RC  
RH  
SYSTEM  
JUMPER  
WIRE  
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
Cooling  
System Relay  
Fan  
‡
Y
C
B
O
G
W
RC RH  
Hot  
24 VAC  
120 VAC  
Neutral  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
Hot  
TRANSFORMER  
24 VAC  
120 VAC  
Neutral  
Figure 3. Typical wiring diagram for  
cool only, 3-wire, single transformer systems  
* Reversing valve is energized when the  
system switch is in the COOL position  
TRANSFORMER  
Figure 6. Typical wiring diagram for heat pump  
with reversing valve energized in COOL  
NOTE  
RED jumper wire (provided with thermostat) must be  
connected between thermostat RH and RC terminals  
for proper thermostat operation with this system.  
JUMPER  
WIRE  
JUMPER  
WIRE  
JUMPER  
WIRE  
THERMOSTAT  
SYSTEM  
‡
Y
C
B
O
G
W
RC RH  
THERMOSTAT  
SYSTEM  
‡
C
B
O
Y
G
W
RC RH  
Cooling  
System Relay  
Fan  
Heating  
System  
Reversing Compressor Fan  
Valve*  
Contactor Relay  
Hot  
Hot  
24 VAC  
120 VAC  
Neutral  
24 VAC  
120 VAC  
Neutral  
* Reversing valve is energized when the  
system switch is in the HEAT position  
TRANSFORMER  
TRANSFORMER  
Figure 7. Typical wiring diagram for heat pump  
with reversing valve energized in HEAT  
Figure 4. Typical wiring diagram for  
heat/cool, 4-wire, single transformer systems  
‡
The 24 Volt neutral connection to terminal C on the thermostat is not required if the batteries are replaced once a  
year with fresh “AA” alkaline batteries.  
Cooling System  
Heating System  
CAUTION  
!
To prevent compressor and/or property damage, if the  
outdoor temperature is below 50°F, DO NOT operate  
the cooling system.  
1. MoveSYSTEMswitchtoHEATposition.Iftheheatingsystem  
has a standing pilot, be sure to light it.  
2. Press  
to adjust thermostat setting above room tempera-  
ture. The heating system should begin to operate.  
1. Move SYSTEM switch to COOL position.  
3. Press  
to adjust thermostat setting below room tempera-  
2. Press  
to adjust thermostat setting below room tempera-  
ture. The heating system should stop operating.  
ture.Theblowershouldcomeonimmediatelyonhighspeed,  
followed by cold air circulation  
3. Press  
to adjust thermostat setting above room tempera-  
ture. The cooling system should stop operating.  
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OPERATION  
Before you begin programming your thermostat, you should be  
familiar with its features and with the display and the location  
andoperationofthethermostatbuttons.Yourthermostatconsists  
of two parts: the thermostat cover and the base.To remove the  
cover, pull it straight out from the base. To replace the cover,  
line up the cover with the base and press until the cover snaps  
onto the base.  
The Thermostat Buttons and Switches  
1
2
3
4
5
6
7
8
Raises temperature setting.  
Lowers temperature setting.  
TIME button.  
PRGM (program) button.  
RUN (run program) button.  
HOLD temperature button.  
FAN switch (ON, AUTO).  
SYSTEM switch (COOL, OFF, HEAT).  
The Display  
Indicates day of the week.  
Press HOLD to change to the next menu item or press TIME  
to go backwards to the previous item in the menu. To exit the  
menuandreturntotheprogramoperation, pressRUN.Ifnokeys  
are pressed within fifteen minutes, the thermostat will revert to  
normal operation.  
9
Flame icon ( ) is displayed when the SYSTEM switch  
is in the HEAT position. Snowflake icon ( )is displayed  
(non-flashing) when the SYSTEM switch is in the COOL  
position.Snowflakeisdisplayed(flashing)ifthethermostat  
is in lockout mode to prevent the compressor from cycling  
too quickly.  
10  
1) SelectTemporary HoldTime -The thermostat can hold any  
temperature you set it to for the amount of time you select on  
this option.Your choices are 0:00 to 8:00 hours in 15 minute  
increments. 0:00 disables the function  
11  
Displays “BATT” when the 2 “AA” batteries are low and  
should be replaced. Only “BATT” and “LO”in the minutes  
field are displayed when batteries are low with no system  
power.  
Example:  
1. You have selected 3:00 hours for the Temporary Hold  
time period.  
12  
13  
Alternately displays current time and temperature.Displays  
“LO” in the minutes field when batteries are low.  
2. With the thermostat set to Heat or Cool, press HOLD  
for approximately five seconds until HOLD time (3:00  
indicating 3 hours) appears as a setting reminder.  
The word “HOLD” is displayed when the thermostat is in  
the HOLD mode. “HOLD” is displayed flashing when the  
thermostat is in a temporary HOLD Mode.  
3. After releasing the button, “HOLD” on the display will  
blink.  
14  
15  
Displays currently programmed set temperature (this is  
blank when SYSTEM switch is in the OFF position).  
4. Use  
or  
tosetthetemperaturetoyourpreference.  
The thermostat will maintain this temperature setting  
for 3 hours with “HOLD” blinking to remind you it is in  
Temporary Hold. After 3 hours the thermostat will go  
back to the program temperature and “HOLD” will no  
longer blink or display.  
Displays “FLTR” when the system has run for the pro-  
grammedfiltertimeperiodasaremindertochangeorclean  
your air filter.  
CONFIGURATION MENU  
2) Select FA or SL (Fast or Slow) Heating Cycle Rate - The  
FA setting is frequently used for gas, oil or electric heat.The  
SL setting produces a longer heating cycle which is normally  
for hot water or steam (hydronic) systems. Both settings  
produce very accurate temperature control and can be set  
to your personal preference.FA cycles the system just under  
1°F and the SL setting cycles at approximately 1.5°F.  
The configuration menu allows you to set certain thermostat  
operating characteristics to your system or personal require-  
ments.  
Press RUN to make sure the thermostat is in the run program  
mode, then press PRGM and RUN at the same time to enter  
the configuration menu. The display will show the first item in  
the configuration menu.  
3) Select backlit display - The display backlight improves  
displaycontrastinlowlightingconditions.Selectingbacklight  
ON will keep the light on for a short period of time after any  
key is pressed. Selecting OFF will keep the light off.  
The configuration menu table summarizes the configuration  
options. An explanation of each option follows.  
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Configuration Menu  
Step  
Press Button(s) Displayed (Factory Default) Press  
or  
to select:  
COMMENTS  
Select temporary Hold time  
1
HOLD  
(0:00)  
0 to 8 hrs (in  
PRGM  
and RUN  
15 minute increments)  
Select FA or SL (Fast or Slow) heating cycle rate  
Select display backlight OFF or ON  
SL  
2
3
4
5
6
HOLD  
*
(FA)  
d-L  
(ON)  
OFF  
OFF  
HOLD  
*
*
E
(ON)  
Select Energy Management Recovery OFF or ON  
(not available on all thermostats)  
HOLD  
Filter  
(000)  
0 to 1950 hours  
(in 50 hour increments)  
HOLD  
*
Select filter replacement run time  
LOC  
(OFF)  
ON  
HOLD  
*
*
Select compressor lockout OFF or ON  
Select temperature display adjustment higher or lower  
0 HI  
(0)  
4 LO to  
4 HI  
HOLD  
7
8
9
Select temperature display to F or C  
Returns to normal operation  
(F)  
C
HOLD  
*
RUN  
* Press HOLD to advance to next item or TIME to move backwards to previous item  
4) Select Energy Management Recovery OFF or ON –  
OPERATING FEATURES  
Nowthatyouarefamiliarwiththethermostatbuttonsanddisplay,  
read the following information to learn about the many features  
of the thermostat.  
(not available on all Thermostats) Energy Management  
Recovery (EMR) causes the thermostat to start heating or  
cooling early to make the building temperature reach the  
program setpoint at the time you specify. Heating will start 5  
minutes early for every 1° of temperature required to reach  
setpoint. Cooling allows more time per degree because it  
takes longer to reach temperature.  
• SIMULTANEOUSHEATING/COOLINGPROGRAMSTOR-  
AGE — When programming, you can enter both your  
heating and cooling programs at the same time. There is  
no need to reprogram the thermostat at the beginning of  
each season.  
Example:YouselectEMRandhaveyourheatingprogrammed  
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.  
• TEMPERATURE OVERRIDE — Press  
or  
until the  
display shows the temperature you want. The thermostat  
will override current programming and keep the room tem-  
perature at the selected temperature until the next program  
period begins.Then the thermostat will automatically revert  
to the program.  
5) Select filter replacement run time – The thermostat will  
display“FLTR”afterasettimeofoperation.Thisisareminder  
to change or clean your air filter. This time can be set from  
0 to 1950 hours in 50 hour increments. A selection of 000  
willcancelthisfeature.When“FLTR”isdisplayed, youcan  
clear it by pressing HOLD and RUN at the same time. This  
resets the timer and starts counting the hours until the next  
filter change. Changing the time in the menu also resets the  
timer.  
• HOLD TEMPERATURE — The thermostat can hold any  
temperature within its range for an indefinite period without  
revertingtotheprogrammedtemperature.Momentarilypress  
HOLD button. “HOLD” will be displayed. Then choose the  
desiredtemperaturebypressing  
or  
.Thethermostat  
will hold the room temperature at the selected setting until  
you press RUN button to start program operation again.  
6) Select Compressor Lockout LOC OFF or ON – Selecting  
LOC ON will cause the thermostat to wait 5 minutes before  
turning on the compressor if the heating and cooling system  
loses power. It will also wait 5 minutes minimum between  
cooling cycles.This is intended to help protect the compres-  
sor 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 feature is  
already present in their system. When the compressor time  
delay occurs it will flash the (snowflake icon) for about five  
minutes then turn on the compressor.  
• CONFIGURATION MENU — Allows you to customize  
certain thermostat options.  
PROGRAMMINGYOUR THERMOSTAT  
This section will help you plan your thermostat’s program to  
meet your needs.For maximum comfort and efficiency, keep the  
following guidelines in mind when planning your program.  
• When heating (cooling) your building, program the  
temperatures to be cooler (warmer) when the building is  
vacant or during periods of low activity.  
7) Select Temperature Display Adjustment 4 LO to 4 HI  
– Allows you to adjust the room temperature display 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 thermostat.  
• During early morning hours, the need for cooling is  
usually minimal.  
8) Select F° or C° Readout – Changes the display readout to  
Centigrade or Fahrenheit as required.  
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PlanningYour Program  
2. Press and hold either  
or  
until you reach the correct  
hour and AM/PM designation (AM begins at midnight; PM  
begins at noon).  
Look at the factory preprogrammed times and temperatures  
shown in the sample schedule. If this program will suit your  
needs, simply press the RUN button to begin running the fac-  
tory preset program.  
3. PressTIME once.The display window will show the minutes  
only.  
If you want to change the preprogrammed times and tempera-  
tures, follow these steps.  
EXAMPLE:  
Determine the time periods and temperatures for your daily  
programs.You must program four periods for both the weekday  
and weekend program. However, you may use the same heat-  
ing and cooling temperatures for consecutive time periods.  
You can choose start times, heating temperatures, and cool-  
ing temperatures independently for each day programs (for  
example, you may select 5:00 AM and 70° as the Monday 1st  
period heating start time and temperature, and also choose  
7:00 AM and 76° as the Monday 1st period cooling start time  
and temperature).  
4. Press and hold either  
minutes.  
or  
until you reach the correct  
5. Press TIME once. The display will show the day of the  
week.  
6. Press  
week.  
or  
until you reach the current day of the  
7. Press RUN once.The display will show the correct time and  
room temperature alternately.  
Usethefollowingtabletoplanyourprogramtimeperiodsandthe Enter Heating Program  
temperatures you want during each period. Fill in the complete  
table to have a record of your programs.  
1. Move the SYSTEM switch to HEAT.  
2. Press PRGM once. “MO” (indicating Monday program)  
will appear in the display. Also displayed are the currently  
programmed start time for the 1st heating period and the  
EnteringYour Program  
currently programmed temperature (flashing).  
Follow these steps to enter the heating and cooling programs  
you have selected.  
MO  
AM  
EXAMPLE:  
Set Current Time and Day  
This display window shows that for Monday’s 1st heating  
period, the start time is 6:00 AM, and 70° is the programmed  
temperature (this example reflects factory preprogram-  
ming).  
1. Press TIME button once. The display will show the hour  
only.  
PM  
EXAMPLE:  
3. Press  
or  
to change the displayed temperature to  
yourselectedtemperatureforMonday’s1stheatingprogram  
period.  
SAMPLE  
4. PressTIMEonce(theprogrammedtimewillflash).Press  
Heating/Cooling Schedule Plan (Factory Program)  
or  
until your selected start time for Monday’s 1st heating  
ALL DAYS OF THE WEEK  
program period appears. The time will change in 15 minute  
increments. When your selected time is displayed, press  
TIME again to return to the change temperature mode.  
Start Time  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
6:00 AM  
8:00 AM  
5:00 PM  
10:00 PM  
Temperature  
Period  
1ST  
70 F  
5. Press PRGM once. The currently programmed start time  
and setpoint temperature for the Monday’s 2nd heating  
program period will appear.  
2ND  
3RD  
4TH  
1ST  
2ND  
3RD  
4TH  
62 F  
70 F  
62 F  
6. Repeat steps 3 and 4 to select the start time and heating  
temperature for Monday’s 2nd heating program period.  
78 F  
7. Repeatsteps3through5forthe3rdand4thheatingprogram  
periods. Monday heating programs are now complete.  
85 F  
78 F  
82 F  
Heating/Cooling Schedule Plan  
PERIOD 2  
PERIOD 1  
PERIOD 3  
PERIOD 4  
HEAT  
Time Temp  
COOL  
Time Temp  
HEAT  
Time Temp  
COOL  
Time Temp  
HEAT  
Time Temp  
COOL  
Time Temp  
HEAT  
Time Temp  
COOL  
Time Temp  
Mon  
Tues  
Wed  
Thur  
Fri  
Sat  
Sun  
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NOTE  
1. Move SYSTEM switch to COOL position.  
2. Follow the procedure for entering your cooling program,  
using your selected cooling times and temperatures.  
If you are programming your thermostat for the first time and  
you want programming for all days of the week to be the same  
as Monday’s program, press RUN or HOLD at this point, and  
proceedtoEnterCoolingProgram.(ThissimplifiedCOPYDAY  
feature only works the first time you program your thermostat.  
If you want to copy one day’s programming to a specific day  
programming, refer to COPY DAY FUNCTION in OPERATING  
FEATURES.Ifyouarechangingyourthermostat’sprogramming,  
you must program each day separately.)  
CHECKYOUR PROGRAMMING  
Follow these steps to check your thermostat programming one  
final time before beginning thermostat operation.  
1. Move SYSTEM switch to HEAT position.  
2. PressPRGMtoviewthe1stMondayheatingperiodtimeand  
temperature. Each time you press PRGM, the next heating  
period time and temperature will be displayed in sequence  
for Monday. Press HOLD to display Tuesday’s 1st heating  
period, and press PRGM to view each of the remaining  
Tuesday’s heating period time and temperatures. To view  
each day’s heating program, press HOLD to change day  
and then press PRGM to look at each programming period  
for the day.(You may change any time or temperature during  
this procedure.)  
8. PressHOLDonce.“TU”(indicatingTuesdayprogram)willap-  
pearinthedisplay,alongwiththestarttimeforthe1stheating  
period and the currently programmed temperature.  
9. Repeat steps 3 through 7 to complete Tuesday’s heating  
programming.  
10.Continue entering each day’s programming until all heating  
periods time and temperatures have been entered.  
11.When you have completed entering your heating program,  
press RUN.  
3. Press RUN.  
4. Move SYSTEM switch to COOL position.  
5. Repeat step 2 to check cooling program.  
Enter Cooling Program  
6. Move SYSTEM switch to HEAT or COOL and press RUN to  
begin program operation.  
YOUR THERMOSTAT IS NOW COMPLETELY PROGRAMMED AND  
READY TO PROVIDE MAXIMUM COMFORT AND EFFICIENCY!  
CAUTION  
!
If the outside temperature is below 50°F, disconnect  
power to the cooling system before programming.  
Energizing the air conditioner compressor during  
cold weather may cause personal injury or property  
damage.  
TROUBLESHOOTING  
Reset Operation  
program. If the thermostat has power, has been reset and still  
If a voltage spike or static discharge blanks out the display or does not function correctly contact your heating/cooling service  
causes erratic thermostat operation you can reset the ther- person or place of purchase.  
mostat by pressing  
also resets the factory defaults to the configuration menu and  
,
and TIME at the same time. This  
Batteries  
For optimum performance, we recommend replacing batteries  
once a year with fresh “AA” alkaline batteries.  
Symptom  
Possible Cause  
Corrective Action  
No Heat/No Cool/No Fan  
(common problems)  
1. Blown fuse or tripped circuit breaker.  
2. Furnace power switch to OFF.  
Replace fuse or reset breaker.  
Turn switch to ON.  
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.  
No Heat  
1. Pilot light not lit.  
Re-light pilot.  
2. SYSTEM Switch not set to HEAT.  
Set SYSTEM Switch to Heat and raise setpoint  
above room temperature.  
3. Loose connection to thermostat or system.  
Verify thermostat and system wires are securely  
attached.  
4. Furnace Lock-Out Condition. Heat may also  
be intermittent.  
Many furnaces have safety devices that shut the  
system down when a lock-out condition occurs.  
If the heat works intermittently contact the furnace  
manufacturer or local service person for assistance.  
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 service person to verify the heating system is  
operating correctly.  
5. Heating System requires service or  
thermostat requires replacement.  
7
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TROUBLESHOOTING  
Symptom  
No Cool  
Possible Cause  
1. SYSTEM Switch not set to COOL  
Corrective Action  
Set SYSTEM Switch to COOL and lower setpoint  
below room temperature.  
2. Loose connection to thermostat or system.  
Verify thermostat and system wires are securely  
attached.  
3. Cooling System requires service or thermostat  
requires replacement.  
Same procedure 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 if the compressor  
lock-out option is selected in the configuration  
menu (Item 6).  
Heat, Cool or Fan Runs Constantly.  
1. FAN Switch set to Fan ON.  
2. Possible short in wiring.  
3. Possible short in thermostat.  
4. Possible short in Heat/Cool/Fan system.  
Check each wire connection to verify they are  
not shorted or touching together. No bare wire  
should stick out from under terminal screws.  
Try resetting the thermostat. 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.  
Furnace Cycles Too Fast or Too Slow  
(narrow or wide temperature swing)  
1. The location of the thermostat and/or the size  
of the Heating System may be influencing the  
cycle rate.  
Item 2 in the Configuration Menu is the adjustment  
that controls the cycle rate. If an acceptable cycle  
rate is not achieved using the FA (Fast) or SL  
(Slow) adjustment contact a local service person  
for additional suggestions.  
Cooling Cycles Too Fast or Too Slow  
(narrow or wide temperature swing)  
1. The location of the thermostat and/or the size  
of the Cooling System may be influencing the  
cycle rate.  
The cycle rate for cooling is fixed and can not be  
adjusted. Contact a local service person for  
suggestions.  
Thermostat Setting and Thermometer  
Disagree  
1. Thermostat thermometer setting requires  
adjustment.  
The thermometer can be adjusted +/- 4 degrees as  
listed in item 7 of the Configuration Menu. No other  
adjustment is possible.  
Clock Loses or Gains Time  
1. Loss of power to thermostat and low batteries.  
The thermostat will maintain its program in memory  
even with no power/no batteries but the clock time  
will be incorrect when power is restored. See No  
Heat/No Cool/No Fan (common problems) above  
for items to check in the system.  
Heat or Cool Starts Early  
1. EMR activated  
See Configuration Menu (Item 4).  
Thermostat Does Not Follow Program 1. AM or PM set incorrectly in program.  
2. AM or PM set incorrectly on the clock.  
Check current clock and program settings including  
the AM or PM designations for each time period.  
If a voltage spike or static discharge occurs use the  
Reset Operation listed above.  
3. Voltage spike or static discharge.  
Blank Display and/or Keypad Not  
Responding  
1. Loss of power and dead batteries.  
2. Voltage Spike or Static Discharge.  
Replace batteries and check heat/cool system for  
proper operation. If a voltage spike or static  
discharge occurs use the Reset Operation  
listed above.  
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  
Markham, Ontario  
www.white-rodgers.com  

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