White Rodgers F95 391 Thermostat User Manual

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Thermostat With Humidity Control  
Digital 7-Day Programmable  
WHITE-RODGERS  
TM  
90 Series  
P R E M I U M  
1F95-391  
Operating Instructions  
Retain for Future Use  
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Easy, Menu-Driven Set-Up  
and Programming  
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10  
11  
12  
Premium options  
to customize the thermostat  
to fit your application.  
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14  
16  
13  
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ORIENTATION  
THE THERMOSTAT BUTTONS  
See inside front cover for illustration  
showing button locations.  
Selects fan operation (see The  
Used with TIME  
/TIME  
13  
FWD  
6
Display page 3). This button is also  
used to program the fan to run  
continuously during a program period.  
to set the clock.  
BACK  
Used to adjust the time backward,  
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(Blue arrow) Lowers temperature  
1
or to select the previous menu item.  
setting (45°F or 7°C minimum)  
Used to enter the service menu to  
14  
Used to adjust the time forward, or  
8
(Red arrow) Raises temperature  
change or reset humidifier, air filter,  
UV bulb, and service timers.  
2
to select the next menu item.  
setting (99°F or 37°C maximum)  
Used with TIME  
/TIME  
FWD  
9
Sets the system mode (HEATing,  
15  
The multi-color indicator glows:  
3
to set the current day.  
BACK  
EMERgency (Heat Pump models  
only), OFF, COOLing, or  
AUTOmatic changeover).  
green for 1st stage, yellow for 2nd stage,  
flashing yellow for 3rd stage, red for  
emergency heat and flashing red for  
malfunction condition in system.  
Used to advance operation to the  
10  
next program period or advance to the  
next day in programming mode.  
Used to adjust the clock one hour  
16  
forward or back.  
This button (on top of the cover)  
4
Used to manually override  
11  
lights the display.  
Used to start or return to program  
programming to hold at a selected  
temperature.  
17  
operation.  
Used to initiate or review  
5
Used to view ambient humidity or  
12  
modify humidity setting.  
thermostat programming or advance to  
next program period in programming  
mode.  
1
Features  
Introduction  
Programming  
FAQs  
Index  
Configuration  
Troubleshooting  
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LARGE LIGHTED (LCD) DISPLAY  
The thermostat display alternately  
shows the current time and the current  
temperature on the left side. The  
display also shows the temperature  
you have programmed or set on the  
right side of your screen.  
shown, one word at a time (PRGM  
MODE, EMR, COOL FAN DELA  
OFF, etc.).  
Displays FAN ON when the fan is  
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operating continuously. Displays FAN  
AUTO when the fan cycles with the  
heating or cooling system.  
CHECK STAT appears when the  
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thermostat detects certain problems  
within itself. CHECK SYSTEM  
appears when the themostat detects  
certain problems in the heating/cooling  
or humidity system.  
Displays the setpoint temperature.  
5
In HUMD mode, shows humidity  
setpoint.  
Display system mode (OFF,  
1
Alternately displays room  
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AUTO, HOLD, VACA or HUMD).  
During programming displays the time  
period (MOR, DAY, EVE, NHT)  
being programmed. In the configura-  
tion menu, the menu item name is  
temperature and time of day. In  
HUMD mode, shows actual humidity.  
Indicates the length of time  
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remaining in a temporary hold  
condition. Also indicates the length of  
time remaining in VACATION mode.  
Shows the current day of the week.  
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When programming, shows the day(s)  
being programmed.  
The word HEAT or COOL will  
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1
2
3
4
1
appear above or below the setpoint if  
CHECK STAT SYSTEM  
CHECK BATTERY  
HRS  
FAN AUTO  
HRS  
FAN AUTO  
1
area is needed to display other  
HEAT  
HEAT  
°F  
AM  
°F  
information.  
AM  
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MON TUE WED THU FRI SAT SUN  
MON TUE WED THU FRI SAT SUN  
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INTRODUCTION  
Thank you for purchasing your  
new White-Rodgers 90 Series  
thermostat with humidity control.  
White-Rodgers has been producing  
energy saving controls for over 60  
years. We have been designing and  
producing the White-Rodgers 90  
Series family of electronic pro-  
grammable thermostats since 1982.  
White-Rodgers 90 Series is the  
third generation of the electronic  
programmable family. We believe  
you will find that the White-  
You will find information about  
thermostat buttons (page 1) and  
display beginning on page 2.  
Introduction .....................................................3  
Configuration ..............................................4-11  
Manual Operation and Programming ......12-17  
Features .................................................... 18-26  
FAQs ......................................................... 27-30  
Troubleshooting ....................................... 31-34  
Rodgers 90 Series is the most user  
friendly and technologically  
advanced thermostat and humidity  
control available today.  
Index ...............................................................35  
Use the tabs at the bottom of the page to quickly  
locate sections.  
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Features  
Introduction Configuration Programming  
FAQs  
Troubleshooting  
Index  
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CONFIGURATION  
The configuration menu allows you to set thermostat operating characteristics to your system or personal requirements.  
BACK  
FWD  
FWD  
To enter the menu, press TIME  
and TIME  
once at the same time. Press TIME  
to advance through the  
menu options. Press arrow keys to change options.  
User Configuration Menu  
Step  
Press Button(s)  
Displayed  
(Factory Default)  
Press  
or  
to select:  
COMMENTS  
Ref  
Page  
Adjusts temperature display higher or lower.  
FWD  
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1
0 °F  
(0)  
5 LO to  
5 HI  
TIME  
Selects EMR option ON or OFF or ON L.  
Adjusts humidity display.  
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7
7
2
3
4
EMR  
(ON)  
OFF ON  
ON L  
FWD  
TIME  
FWD  
RH  
(0)  
20 LO to  
20 HI  
TIME  
To reduce or eliminate condensation during cold  
weather. Use LO setting first, if condensation persists  
use HI setting.  
DRY  
(OFF)  
LO or HI to OFF  
FWD  
TIME  
Enables improved dehumidification in cooling mode  
if humidity is above setting.  
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5
6
FWD  
FWD  
OPTM CMFT  
(ON)  
OFF  
ON  
TIME  
TIME  
Available if OPTM CMFT is ON. Provides extra  
dehumidification if humidity is above setting. May  
reduce temperature setpoint by up to 3 degrees.  
OPTM DHUM  
(OFF)  
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User Configuration Menu (Continued)  
Adjusts temperature display between °F or °C  
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(°F)  
°C  
FWD  
TIME  
TIME  
Set Fan (one shot) option. Set the duration of the  
one shot option.  
SET FAN  
(0)  
0 HRS (OFF) to  
6 HRS  
FWD  
.
Turns beeper ON or OFF  
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8
OFF  
OFF  
BEEP  
(ON)  
FWD  
FWD  
9
TIME  
TIME  
ON allows second stage to energize if setpoint is raised  
3 or more degrees. OFF (economy) minimizes second  
stage operation on setpoint changes.  
10  
HEAT FAST  
(ON)  
11  
FWD  
COOL FAST  
(OFF)  
OFF  
ON allows second stage to energize if setpoint is  
lowered 3 or more degrees. OFF (economy) minimizes  
second stage operation on setpoint changes.  
TIME  
9
Enables Remote Sensor A (connected to SA).  
9&10  
9&10  
FWD  
FWD  
ON  
ON  
12  
13  
TIME  
TIME  
REMT SEN A  
(OFF)  
Enables Remote Sensor B (connected to SA).  
REMT SEN B  
(OFF)  
Enables Remote Sensor C (connected to SA).  
9&10  
9&10  
FWD  
FWD  
ON  
14  
15  
TIME  
TIME  
REMT SEN C  
(OFF)  
OFF Disables Thermostat Sensor. (Only available if  
remote sensor A, B, or C is connected).  
STAT SEN L  
(ON)  
OFF  
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Configuration  
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User Configuration Menu (Continued)  
Enables outdoor temperature sensor. Requires optional  
F145-1378 outdoor sensor.  
FWD  
10  
ON  
16  
TIME  
TEMP OUT  
(OFF)  
tions in large buildings where extra  
time to reach the set temperature may  
be desired, EMR Long may be  
selected. When EMR ON L is selected  
in the user menu (page 5, item 2) the  
thermostat uses 15 minutes per °F.  
EXAMPLE: If the temperature in the  
room is 65°F and the thermostat is  
programmed for 70°F at 7 AM, the  
thermostat will start approximately 40  
minutes early. The difference between the  
room temperature (65°F) and the setpoint  
(70°F) is 5° and 5° X 8 minutes per °F =  
40 minutes. The setpoint on the display  
will actually change to display 70° about  
40 minutes early. The maximum time the  
thermostat can start early in heating is 75  
adjust, refer to the CONFIGURATION  
section (page 5, step 1).  
CONFIGURATION MENU  
FEATURES  
AdjustableTemperature Display.  
(User menu, Item 1), The room  
Selectable Energy Management  
Recovery (EMR).  
temperature display can be adjusted to  
read higher or lower by following the  
User menu and adjusting the tempera-  
ture to a higher or lower value. The  
thermostat is calibrated at the factory to  
display a very accurate room tempera-  
ture, but due to various conditions and/  
or personal preference, you may wish to  
adjust the thermostat display higher or  
lower (up to 5°F). For example, if the  
thermostat displays a room temperature  
of 70° and you want it to display 73° the  
display can be adjusted to read 73°. To  
(User menu, Step 2) EMR causes the  
thermostat to start operating the system  
early in order to make the building  
temperature reach your program  
setpoint at the time you specify. In  
multistage heating, the thermostat will  
start 8 minutes early for every 1°F  
difference between the room tempera-  
ture and the next programmed  
temperature. In cooling and heat pump  
applications, the thermostat uses 15  
minutes per °F. For heating applica-  
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conditions and/or personal preference,  
you may wish to adjust the thermostat  
display higher or lower (up to +/-  
20%). For example, if the thermostat  
displays room humidity of 40% but  
you want it to display 43% you can  
adjust it. To adjust, refer to the  
CONFIGURATION section (page 4,  
step 3).  
humidity. For suggested settings see  
table below.  
minutes (or 3 hours, 45 minutes if EMR  
ON L is selected). The maximum time in  
cooling and heat pump applications is 3  
hours and 45 minutes. Cooling or heat  
pump applications start earlier because it  
takes longer to reach the desired  
temperature. This feature also minimizes  
the use of the auxiliary stages if conditions  
are such that the compressor stages are  
adequate to reach the desired setpoint.  
To select or deselect this feature, refer to  
the CONFIGURATION section (page 4,  
step 2).  
Programmable Dehumidification  
Optimal Comfort Mode (OPTM  
CMFT)  
(User Menu step 5)When turned on  
this feature automatically reduces  
indoor humidity during calls for  
cooling if humidity is 2% above  
setting. Humidity is set by pressing the  
Humidity button when in the appropri-  
ate mode, in this case Cooling, and  
Programmable Automatic  
Humidity Reduction (DRY)  
(User Menu step 4)  
pressing the  
or  
buttons to  
This feature automatically lowers  
humidity setting when the outside  
temperature drops. This is to prevent  
the interior windows/walls from  
reaching the dew point where water  
condenses on surfaces. To achieve  
automatic humidity reduction, the  
thermostat lowers the humidity when  
furnace cycles are long. When the  
furnace runs shorter cycles, it increases  
set desired humidity (range 40 to 95)  
level followed by pressing Run  
Program. This dehumidification  
feature uses less energy by maintaining  
temperature and dehumidifying only  
when a call for Cooling is required.  
Adjustable Humidity Display (RH)  
(User Menu step 3) The room  
humidity display can be adjusted to  
read higher or lower by following the  
configuration menu and adjusting the  
humidity to a higher or lower value.  
The thermostat is calibrated at the  
factory to display a very accurate  
room humidity, but due to various  
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Configuration  
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Programmable Dehumidification  
Optimal Dehumidification Mode  
(OPTM DHUM)  
Fahrenheit or Celsius  
Temperature Display.  
fan to normal operation before the end of  
the time period, press the FAN button.  
(User menu, Step 7) This thermostat  
is factory set to display temperature in  
Fahrenheit. If you prefer, you may  
configure the thermostat to display  
Celsius. See the CONFIGURATION  
Section, page 4.  
(User Menu step 6)When turned on  
this feature automatically reduces  
indoor humidity if humidity is 2%  
above setting. Humidity is set by  
pressing the HUMIDITY button  
when in the appropriate mode, in this  
case Cooling, and pressing the  
Beeper on.  
(User menu, Step 9) The thermostat  
has a beeper that will emit a tone when  
any key is pressed. In the user menu, the  
BEEP feature can be turned OFF using  
or  
to provide silent key  
Single Period Fan Control.  
operation.  
or  
humidity level followed by pressing  
PROGRAM. This dehumidifi-  
buttons to set desired  
(User menu, Step 8) This feature  
allows you to have the fan run for a  
predetermined period of time by  
pressing the FAN key twice within 1.5  
seconds. If a time is set in the User  
Heat Fast.  
RUN  
(User menu, Step 10) This feature,  
when set to ON, will bring the second  
stage of heating on any time you  
manually raise the temperature three or  
more degrees above room temperature.  
If HEAT FAST is set to OFF, the  
thermostat will delay the second stage  
from 0 to 30 minutes based on how well  
the first stage is keeping up with your  
setting.  
cation feature may use more energy  
by making dehumidification a priority  
initiating a call for cooling if humidity menu (page 4, step 8) the display will  
is 2% above desired setting. This  
feature may also over-cool the  
condition space by up to 3 degrees to  
achieve the desired humidity level.  
show FAN, # hrs and PRG FAN ON  
for six seconds. After six seconds the  
display will continue to indicate PRG  
FAN ON for the time period selected.  
After this time period, the fan will  
return to normal operation. To return the  
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Cool Fast.  
you want to install the thermostat in a  
separate room to prevent tampering.  
After installing and connecting the  
remote sensor(s) to the thermostat, the  
installer can enable each remote indoor  
temperature sensor (A, B, and/or C).  
When operating with remote sensor(s),  
the thermostat will calculate an  
average of the sensed temperatures in  
all enabled sensor locations (A, B, C  
and/or L), then display the average  
temperature as the room temperature.  
The temperature at each remote sensor  
can be displayed by pressing the light  
button twice within one second. With  
the thermostat in program run or hold  
mode. Temperatures at the outdoor and  
indoor remote sensors will be  
different program periods. This allows  
the system to maintain a comfortable  
environment by giving higher priority  
to occupied locations. At the same  
time, giving lower priority to unoccu-  
pied locations enhances efficient  
system operation. EXAMPLE: Your  
home has bedrooms on the upper level  
and a guest bedroom on the main  
level, along with the living room,  
kitchen, etc. The thermostat (sensor L)  
is located in the hall on the main level.  
Remote sensors are located on the  
upper level (sensor A) and the guest  
bedroom (sensor B). The lower level  
would be occupied in the DAY  
(User menu, Step 11) This feature,  
when set to ON, will bring the second  
stage of cooling on any time you  
manually lower the temperature three  
or more degrees below room tempera-  
ture. If COOL FAST is set to OFF,  
the thermostat will delay the second  
stage from 0 to 30 minutes based on  
how well the first stage is keeping up  
with your setting.  
Optional Remote Temperature  
Sense.  
(User menu, Step 12,13,14,15) Up to  
three remote sensors (F145-1328) can  
be attached to this thermostat to sense  
indoor temperature at locations away  
from the thermostat. Each sensor may  
and EVE periods. The upper level  
would be occupied in the NHT and  
MOR periods. With no guest in the  
guest bedroom, the sensors could be  
programmed as follows:  
displayed with subsequent presses of  
be located as far as 300 feet away from the light button in the following order  
the thermostat. This is an excellent  
feature if the thermostat is in a poor  
location for sensing temperature or if  
(if connected): outdoor sensor, sensor  
L, A, B, C. You can also assign each  
sensor different priorities during  
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Configuration  
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press PROGRAM  
to advance  
VIEW  
The sensor must be properly con-  
nected and enabled using the User  
menu. The display shows the outdoor  
temperature from -40° to 140°F by  
pressing the light button twice within  
one second when the thermostat is in  
program run or hold mode.  
SENSOR  
the time period you wish to modify,  
then press the HUMIDITY button. On  
the display in place of period of day  
(MOR, DAY, EVE, NHT) the priority  
of the sensor and the sensor identifica-  
tion will appear. Press the HUMID-  
ITY button to step through the sensors  
that are installed and enabled L (local),  
A, B or C. Only sensors that are  
installed and enabled will be listed.  
When the sensor you wish to change is  
displayed, press the DAYLIGHT  
SAVING TIME key to change the  
priority (AVG, HI or LO). AVG is the  
default setting. A setting of HI gives a  
sensor more importance and a setting  
of LO gives less importance.  
L
A
HI  
B
MOR  
DAY  
EVE  
NHT  
AVG  
HI  
LO  
LO  
LO  
LO  
AVG  
AVG  
HI  
HI  
AVG  
In the MOR and NHT periods, the  
sensor on the upper level (sensor A)  
has more priority than the lower level  
(sensor L), so the system will operate  
to keep the temperature at the set point  
in the upper level. In the DAY and  
EVE periods, the lower level has the  
higher priority, so the system will  
operate to keep the temperature at the  
set point on that level. The sensor in  
the guest bedroom has the lower  
priority of the sensors. If there is a  
guest, the sensor in that room (sensor  
B) should be changed to AVG or HI  
for periods when that room will be  
used. To assign priority to a sensor,  
KEYPAD LOCKOUT MENU  
The keypad lockout menu allows you  
to partially or totally lock out the  
keypad depending on your system or  
personal requirements. To enter the  
keypad lockout menu you must first  
enter the User Menu, while in the User  
Menu press TIME  
and TIME  
FWD  
the same time for at least one  
BACK  
second. Press TIME  
to  
FWD  
advance through the menu options.  
Outdoor Temperature Sense.  
(User menu, Step 16) A remote sensor  
(F145-1378) may be installed for  
outdoor temperature measurement.  
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FWD  
Keypad Lockout Menu (Must be in User Menu to enter Keypad Lock Menu- press and hold Time  
and  
BACK  
Time  
for one second or more).  
Step  
Press Button(s)  
Displayed  
(Factory Default)  
Press  
or  
to select:  
COMMENTS  
Ref  
Page  
FWD  
ON  
TIME  
1
2
ON Disables all keypad functions except Temp Up and  
Down. User may temporary override within  
lowest programmed setpoint in cooling and highest  
programmed setpoint in heating.  
10 & 11  
PART LOCK  
(OFF)  
FWD  
TIME  
ON  
ON Disables all keypad functions.  
LOCK  
(OFF)  
10 & 11  
Press arrow keys to change options.  
Choose one of the two keypad locks to temperatures used in your program.  
prevent unauthorized tampering with This is especially useful in buildings  
the program. Two levels of security are where unscheduled events are  
heating and minimum cooling  
available, Total Keypad Lockout or  
Partial Keypad Lockout. Total  
Keypad Lockout renders all buttons  
inoperative. Partial Keypad Lockout  
common. Anyone can change the  
temperature, but only between the  
temperatures you set and only for the  
number of hours you specify if you set  
up your Hold Till timing (see Tempo-  
rary Program Override” (page 18).  
allows only the  
or  
buttons to operate for temporary  
temperature overrides. It also limits  
the temperature to the maximum  
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Configuration  
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PROGRAMMING  
TIME  
MANUAL OPERATION  
(Bypassing the Program)  
Your White-Rodgers 90 Series  
thermostat can be used to control  
temperature manually (without  
programming). For manual operation,  
with the thermostat set to Heat, Cool,  
or Auto. Fill out the blank schedules  
(pages 16 & 17) with the time and  
temperatures you want in your  
program. Fill in every space for your  
program.The same temperature can be  
repeated more than once if you do not  
want the temperature to change over  
several time periods. This is useful for  
homes or businesses that are occupied  
all day and only want a setback  
3. Press SET  
again. The display  
FWD  
will show minutes. Use TIME  
BACK  
or TIME  
to set to the current  
minutes.  
RUN  
4. Press PROGRAM  
.
To Set the Day:  
press  
to select HEAT or  
SYSTEM  
DAY  
5. Press SET  
. The display will  
COOL, then press PROGRAM  
. Use or to set the  
temperature as desired.  
indicate a day of the week. Use TIME  
HOLD  
BACK  
FWD  
or TIME  
to set to the  
current day of the week.  
temperature at night.  
RUN  
6. Press PROGRAM  
.
PROGRAMMED OPERATION  
PlanningYour Program  
To Set the Program:  
EnteringYour Program  
To Set the Clock:  
1. Press PROGRAM  
SYSTEM  
7. Press the  
button to select  
HEAT (for heating program) or COOL  
The sample schedule (pages 14 & 15)  
shows the factory-installed programs  
for heating and cooling. The heating  
and cooling programs are separate,  
and must be programmed individually.  
To use the factory program, set the  
RUN  
.
(for cooling program).  
TIME  
2. Press SET  
. The display will  
VIEW  
8. Press PROGRAM  
one time.  
FWD  
show the hour. Use TIME  
or  
The display will show MOR, the  
settings for time and temperature and  
MON.  
BACK  
TIME  
to set to the current hour  
and AM/PM designation.  
clock and press PROGRAM  
RUN  
12  
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9. If you program Monday the first  
time you press PROGRAM  
will be copied to the rest of the week.  
schedule. If you want the fan ON  
VIEW  
it  
continuously during this period, press  
FAN  
the  
button.  
To program the other days of the week  
VIEW  
12.Press PROGRAM  
one time.  
ADV.  
press  
DAY to until you reach the  
MOR on the display will change to  
DAY. Repeat steps 10 and 11 to enter  
time and temperature for this period.  
day you wish to change and follow  
Steps 10, 11 & 12. You can also copy  
the program from one day to another.  
VIEW  
13.Press PROGRAM  
to  
HOLD  
To copy, press  
/COPY. The  
continue through the entire schedule,  
entering time and temperature for each  
period. When you are satisfied that  
your program matches your schedule,  
RUN  
display will show COPY, and all the  
other days of week will be flashing.  
HOLD  
Press  
/COPY again to copy the  
day in to the rest of the week or press  
press PROGRAM  
. Program-  
BACK  
FWD  
TIME  
or TIME  
until you  
ming is now complete for this mode  
and your program is running.  
reach the day you want to copy to and  
HOLD  
press  
/COPY.  
14.To program the other mode, repeat  
the procedure from step 6.  
BACK  
FWD  
10.Press TIME  
or TIME  
to set the time on the display as  
selected in your HEATING or  
COOLING SCHEDULE. Be sure to  
check the AM or PM on the display.  
11.Press the  
or  
button to  
adjust the temperature to match your  
13  
Programming  
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7-Day Sample HEAT Program Schedule  
(Shows factory programming)  
1
2
3
4
5
6
5
6
5
6
5
6
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
70°F (21°C)  
70°F (21°C)  
70°F (21°C)  
70°F (21°C)  
70°F (21°C)  
70°F (21°C)  
70°F (21°C)  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
70°F (21°C) 10:00 PM  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
62°F (16°C)  
MON  
TUE  
WED  
THU  
FRI  
SAT  
SUN  
1
2
3
4
5
6
Morning (MOR)  
Day (DAY)  
Evening (EVE)  
Night (NHT)  
Start Time  
Temperature  
14  
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7-Day Sample COOL Program Schedule  
(Shows factory programming)  
1
2
3
4
5
6
5
6
5
6
5
6
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
6:00 AM  
78°F (25°C)  
78°F (25°C)  
78°F (25°C)  
78°F (25°C)  
78°F (25°C)  
78°F (25°C)  
78°F (25°C)  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
8:00 AM  
85°F (29°C)  
85°F (29°C)  
85°F (29°C)  
85°F (29°C)  
85°F (29°C)  
85°F (29°C)  
85°F (29°C)  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
5:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
78°F (25°C) 10:00 PM  
82°F (27°C)  
82°F (27°C)  
82°F (27°C)  
82°F (27°C)  
82°F (27°C)  
82°F (27°C)  
82°F (27°C)  
MON  
TUE  
WED  
THU  
FRI  
SAT  
SUN  
1
2
3
4
5
6
Morning (MOR)  
Day (DAY)  
Evening (EVE)  
Night (NHT)  
Start Time  
Temperature  
15  
Programming  
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7-Day Personal HEAT  
Program Schedule  
1
2
3
4
5
6
5
6
5
6
5
6
MON  
TUE  
WED  
THU  
FRI  
SAT  
SUN  
1
2
3
4
5
6
Morning (MOR)  
Day (DAY)  
Evening (EVE)  
Night (NHT)  
Start Time  
Temperature  
16  
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7-Day Personal COOL  
Program Schedule  
1
2
3
4
5
6
5
6
5
6
5
6
MON  
TUE  
WED  
THU  
FRI  
SAT  
SUN  
1
2
3
4
5
6
Morning (MOR)  
Day (DAY)  
Evening (EVE)  
Night (NHT)  
Start Time  
Temperature  
17  
Programming  
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FEATURES  
Temporary Program Override  
Any time your program is running and  
LCD screen make it easy to see. In low you would like to override it for a  
Pushbutton Backlight  
The large numbers and letters on your  
maximum and 15-minute minimum.  
Beyond 19 hours you may wish to use  
the vacation hold feature (pages 19 &  
20). If you need to, you can adjust the  
temperature up or down.  
light conditions, press the button on  
top of the thermostat and the display  
will light up for three seconds. For ten  
minutes after pressing the light button,  
pressing any other button will light the  
display for ten seconds.  
specific amount of time, press  
or until the temperature you  
want is displayed. The display will  
indicate HOLD, and the number of  
hours remaining in the hold period is  
indicated with the word HRS. To  
adjust the length of time for the  
Indefinite Program Hold.  
If you want to operate the thermostat to  
keep a set temperature without a  
program running, press PROGRAM  
Factory Preprogramming  
. The temperature Up or Down  
HOLD  
override, press TIME  
or TIME  
FWD  
This thermostat has been programmed  
at the factory. The chart in the  
buttons can be used to raise or lower  
the temperature. The thermostat will  
hold the set temperature until you  
return to the program by pressing  
. HOLD TILL will be displayed  
BACK  
as well as the HOLD period expiration  
time. Press TIME or TIME  
programming examples section lists  
these factory settings. If the times and  
temperatures are the same as your  
schedule, you may simply run the  
factory installed program by pressing  
FWD  
buttons until you reach the time  
BACK  
PROGRAM  
.
RUN  
you would like it to resume the  
program. The TIME or TIME  
FWD  
buttons adjust the time in 15  
minute increments. This pro-  
BACK  
PROGRAM  
.
RUN  
grammed hold time has a 19 hour  
18  
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Automatic Heat/Cool  
Changeover  
is equal to or higher than the cooling  
setpoint this causes is conflict. The  
thermostat will indicate a conflict by  
flashing the setpoint and will resolve  
the conflict by choosing a heating  
setpoint that  
is an average of the two program  
setpoints. The cooling setpoint will  
be two degrees higher than the heating  
setpoint.  
thermostat displays a room tempera-  
ture of 70° but you want it to display  
73°, you can adjust it. To adjust, refer  
to the USER CONFIGURATION  
section (page 4, step 1).  
If you have a heating/cooling system,  
the thermostat can be set to automati-  
cally switch the system from heating to  
cooling as needed. To set your  
thermostat to this operating mode,  
Programmable Fan Control  
press the  
button until AUTO  
SYSTEM  
This feature allows you to have your  
fan operate continuously through one  
or more programmed time periods.  
This is useful if you want constant air  
circulation in your location during a  
specific time period. If you do not use  
this feature, the fan will cycle normally  
with the heating and cooling system.  
is displayed on the screen. To change  
the mode of operation from heating or  
cooling can be accomplished by  
pressing the  
and  
buttons  
Adjustable Temperature Display  
The room temperature display can be  
adjusted to read higher or lower by  
following the configuration menu and  
adjusting the temperature to a higher  
or lower value. The thermostat is  
calibrated at the factory to display a  
very accurate room temperature, but  
due to various conditions and/or  
at the same time, this will change the  
setpoint temperature displayed to the  
setpoint of the other mode. This will  
allow you to modify both the HEAT  
and COOL setpoints to accommodate  
a HOLD condition while in Automatic  
Changeover mode. Note: For proper  
Automatic Changeover mode the  
Programmable Vacation Time/  
Temperature Operation.  
The VACATION mode allows you to  
program the thermostat to hold a  
constant temperature for 1 to 29 days.  
At the end of the day and time you  
select, the thermostat will return to  
heating setpoint must be at least 1°F  
lower than the cooling setpoint in each  
program period. If the heating setpoint  
personal preference, you may wish to  
adjust the thermostat display higher or  
lower (up to 5°F). For example, if the  
19  
Features  
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normal program operation. To program programmed to hold the temperature  
especially useful in buildings where  
unscheduled events are common.  
Anyone can change the temperature,  
but only between the temperatures you  
set and only for four hours or the  
number of hours you specify if you set  
up your Hold Till timing (see  
Temporary Program Override, page  
18). To select or deselect this feature,  
refer to the USER CONFIGURATION  
section (page 11, steps 1 and 2).  
you selected through your vacation for  
HEAT, COOL, or AUTO. After 20  
seconds the display will return to time/  
temperature alternation, and will  
the number of days, press the  
to set your temperature then  
or  
press and release the SET  
DAY  
button and VACA HOLD TILL will be  
displayed. The display will also show  
DAYS (flashing) and the number 5. To  
change the number of vacation days,  
display VACA. Pressing PROGRAM  
cancels this feature and begins  
RUN  
running your normal program.  
press TIME  
Press  
or TIME  
to set the  
.
BACK  
FWD  
Keypad Lockout.  
or  
This security feature allows you to lock  
out the keypad to prevent unauthorized  
tampering with the program. Two  
levels of security are available, Total  
Keypad Lockout or Partial Keypad  
Lockout. Total Keypad Lockout  
renders all buttons inoperative. Partial  
Keypad Lockout allows only the  
temperature you wish to maintain  
while away. While still in the vacation  
mode, set the time you require your  
program to resume by pressing SET  
Thermostat Startup Up  
After Power Loss.  
The user program and installation and  
configuration settings are stored in  
permanent memory indefinitely. After  
a total power loss of 24V to the  
thermostat for more than 4 hours the  
clock and day settings will be lost.  
When power is restored your thermo-  
stat will maintain a heating tempera-  
ture of 62°F and a cooling temperature  
once. The current time will  
TIME  
display along with the word HRS  
(flashing). Press TIME  
to adjust  
FWD  
the time in 15 minute increments. You  
may wish to select a few hours in  
advance of your expected return to  
allow time to reach the desired  
or  
to operate for temporary  
temperature overrides. It also limits the  
temperature to the maximum heating  
and minimum cooling temperatures  
used in your program. This is  
temperature. Your thermostat is now  
20  
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Service Button Menu  
of 85°F. If this happens, set the clock  
and day of the week (using steps 1  
through 6 from “Entering Your  
Program”, page 12 & 13), then select  
HEAT, COOL or AUTO using the  
professional HVAC contractor. The  
fourth reminder option may be used in  
lieu of or in conjunction with the other  
reminders. If you’d prefer having a  
professional service your system, the  
Routine Maintenance Reminder is the  
only reminder you’ll need to set. To  
disable a feature that was previously  
The Service button allows setting of  
maintenance reminders for three  
optional equipment accessories  
typically used with forced air heating/  
cooling systems. The three accessories  
humidifier, air filter, and UV light are  
designed to enhance indoor air quality.  
A humidifier will add humidity when  
conditions would normally make the  
indoor air uncomfortably dry. Air  
filters are designed to clean the air  
through a forced air system. These  
accessories require routine mainte-  
nance to provide optimum perfor-  
mance. The service button mainte-  
nance reminders are designed so that  
they can be customized to the  
button, and press PRO-  
SYSTEM  
GRAM  
to resume operation  
RUN  
with your previously set program.  
selected, press TIME  
button to  
BACK  
show either REM PAD TIME, REM  
FLTR TIME, REM UV TIME, or  
REM SERV TIME and then press the  
Compressor  
Short Cycle Protection.  
Your thermostat can be configured to  
protect your system against premature  
compressor failure by “locking out”  
the compressor. This ensures that the  
compressor will stay off for at least  
five minutes on each cycle. When the  
thermostat is in compressor lock-out,  
the word COOL will flash. During this  
period, the compressor will not be  
energized. See the installation  
instructions.  
or  
arrow to turn OFF.  
requirements of each accessory. If your  
system is a forced air system you may  
have none or all three accessories. The  
fourth maintenance reminder is for  
routine servicing of your system by a  
21  
Features  
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Service Button Menu  
Step  
Press Button(s)  
Displayed  
(Factory Default)  
Press  
or  
to select:  
COMMENTS  
1
SERVICE  
PAD TIME  
(OFF) Hrs  
or  
(ON)  
or  
(OFF)  
Set Humidifier Maintenance Reminder.  
REM PAD TIME  
No. of Hrs  
Selects time intervals in increments of 25 hours. The RUN  
time accumulates when the HM terminal is energized.  
2
3
SET PAD TIME  
(100) Hrs  
25 to 1975  
FWD  
TIME  
(If PAD TIME is ON)  
Set Air Filter Maintenance Reminder.  
FWD  
FLTR TIME  
(OFF) /Hrs  
or  
(ON)  
or  
(OFF)  
TIME  
REM FLTR TIME  
No. of Hrs  
Selects time intervals in increments of 25 hours.  
The RUN time accumulates when the fan is operating.  
4
5
SET FLTR TIME  
(200) Hrs  
25 to 1975  
FWD  
TIME  
(If FLTR TIME is ON)  
Selects UV Light Maintenance Reminder.  
UV TIME  
(OFF) Days  
or  
(ON)  
or  
(OFF)  
FWD  
TIME  
REM UV TIME  
No. of Days  
Selects time intervals in increments of 25 days. The RUN  
time is the calendar time from when it is entered or reset.  
SET UV TIME  
(375) Days  
25 to 1975  
FWD  
6
TIME  
(If UV TIME is ON)  
22  
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Service Button Menu (Continued)  
Selects Routine Maintenance Service Call Reminder.  
SERV TIME  
(OFF) Days  
or  
(ON)  
or  
(OFF)  
FWD  
7
TIME  
REM SERV TIME  
No. of Days  
Selects time intervals in increments of 25 days. The RUN  
time is the calendar time from when it is entered or reset.  
SET SERV TIME  
(175) Days  
25 to 1975  
FWD  
8
TIME  
(If SERV TIME is ON)  
Returns to Normal Operation.  
RUN  
PRGM  
Air Filter  
Change-Out Indicator.  
displayed, you can clear it by pressing  
the SERVICE button. This resets  
Humidifier  
Maintenance Indicator.  
This feature allows the thermostat to  
display the words CHNG FLTR  
(change filter) after a set time of fan  
operation. This is a reminder to change change the number of hours for filter  
or clean your air filter. The factory set  
interval for CHNG FLTR to be  
displayed is 200 hours of fan opera-  
tion. This can be set anywhere from 0  
to 1975 hours in 25 hour increments. A see CHNG FLTR proceed to step 2.  
selection of OFF will cancel this  
feature. When CHNG FLTR is  
23  
the timer and starts counting the hours  
until the next filter change. The  
following steps will allow you to  
This feature allows the thermostat to  
display the words CHCK PAD (check  
humidifier) after a set time of  
humidifier operation. This is a  
reminder to maintain or clean your  
humidifier. The factory set interval for  
CHCK PAD to be displayed is 100  
hours of humidifier operation. This  
should be adjusted with respect to the  
humidifier’s recommended mainte-  
nance schedule.  
change-out.  
1. If you see CHNG FLTR on the  
display, press the SERVICE button  
once to reset the timer. If you do not  
When the SERVICE button is pressed  
twice, the display will show the The  
Features  
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System and  
Thermostat Diagnostics.  
number of hours remaining before  
CHNG FLTR indicator will display.  
2. Press the SERVICE button. The  
display will show SET FILTER TIME  
and will show the number of hours to  
filter change.  
enabled the factory set interval for  
CALL SERV UV to be displayed is  
350 days of UV bulb operation and  
can be adjusted in 25 day increments.  
This should be adjusted with respect to  
the bulb’s recommended maintenance  
schedule.  
The display will indicate CHECK  
SYSTEM if the room temperature  
does not rise within two hours of the  
call for heat. After two hours the  
thermostat will quit calling for heat for  
one minute (this allows some furnaces  
to reset) and call for heat again. When  
CHCK PAD is displayed, you can  
clear it by pressing SERVICE button.  
This resets the timer and starts  
counting the hours until the next  
humidifier maintenance. The following  
steps will allow you to change the  
number of hours for humidifier  
maintenance.  
3. Press TIME  
or TIME  
BACK  
FWD  
to change the time to your requirements.  
4. Press PROGRAM to return  
Routine Maintenance Reminder.  
This feature allows the thermostat to  
display the words CALL SERV (Call  
for Service) after a set time of system  
operation. This is a reminder to  
maintain your system at optimum  
level of operation. The factory set  
interval for CALL SERV to be  
displayed is days of system operation.  
This should be adjusted with respect to  
your HVAC service company’s  
recommendation. When enabled the  
default is 175 days and can be adjusted  
in 25 day increments.  
RUN  
to the normal operating mode. NOTE:  
If unsure what interval to use between  
filter changes or cleaning, contact the  
manufacturer of your heating/cooling  
equipment.  
UV Bulb Replacement Indicator.  
This feature allows the thermostat to  
display the words CALL SERV UV  
(Call for Service of UV bulb) after a  
set time of UV bulb operation. This is  
a reminder to maintain your UV system  
at optimum level of operation. When  
1. If you see CHCK PAD on the  
display, press the SERVICE button  
once to reset the timer. Press SER-  
VICE button again the display will  
show the number of hours to humidi-  
fier maintenance.  
24  
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minutes. If these checks fail to solve  
the problem, the thermostat should be  
replaced.  
humidity reduction, the thermostat  
lowers the humidity when furnace  
cycles are long. When the furnace runs  
shorter cycles, it increases humidity.  
2. Press TIME  
to change the time to your requirements.  
3. Press PROGRAM to return  
or TIME  
BACK  
FWD  
RUN  
to the normal operating mode. If the  
temperature still does not rise, it will  
continue to call for heat. This normally  
indicates the heating system is not  
working correctly. You may wish to  
consult your furnace manufacturer or  
service person. The display will  
indicate CHECK STAT if one of the  
following occurs.  
Adjustable Humidity Display.  
The room humidity display can be  
adjusted to read higher or lower by  
following the configuration menu and  
adjusting the humidity to a higher or  
lower value (up to 20% RH). The  
sensed humidity is calibrated at the  
factory. If you want to adjust it, refer  
to the CONFIGURATION section  
(page 4, step 3).  
For suggested settings see table below.  
Factory default — no humidity  
reduction.  
OFF  
LO  
HI  
Well insulated homes requiring  
little humidity reduction.  
Poorly insulated homes or homes  
with a lot of condensation on  
windows/walls.  
• One of the buttons is stuck down or  
in. Check buttons, make sure nothing  
is pushing them in.  
Programmable Automatic  
Humidity Reduction.  
• The thermostat sensor is not  
If your window insulation is poor, you  
need high humidity reduction. If your  
window insulation is good, you need  
low humidity reduction (factory  
setting). Selection of OFF will cancel  
this feature. To adjust this feature,  
refer to the CONFIGURATION  
section (page 4, step 4).  
functioning. If using a remote sensor,  
check connections, wiring and power.  
• The humidity sensor is not function-  
ing. After checking the above, press  
This feature automatically lowers  
humidity when the outside temperature  
drops. This is to prevent the interior  
windows/walls from reaching the dew  
point where water condenses on  
surfaces. To achieve automatic  
PROGRAM  
to reset the  
RUN  
display. If this does not clear the  
display, disconnect power for five  
25  
Features  
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Humidifier Control  
and Monitoring  
point is displayed on the right side of  
the display. or button  
then the humidifier will operate. If the  
demand for humidity is not satisfied  
for ten consecutive heat cycle  
operations, the display will show the  
word HUMD for one second and the  
word MX for one second signaling  
maximum possible humidity is  
reached.  
When the humidity button is pressed  
while in the run mode and in the HEAT  
position, the actual humidity will be  
displayed on the left side of the  
display. HUMD is displayed above  
the actual humidity. The humidity set  
may be pressed to modify the humidity  
set point (range 5 to 50). Maximum  
displayed humidity is 97% RH and  
minimum displayed humidity is 2%  
RH. If the heating system is operating  
and there is a demand for humidity,  
FAQs  
1F95-391  
1. My thermostat is reading  
Celsius. How do I change it  
to Fahrenheit?  
Press TIME  
and TIME  
until you get to °C then press the  
at the same time to enter the configuration menu. Press  
BACK  
FWD  
TIME  
or  
arrow to select °F, press  
FWD  
PROGRAM  
to return to normal operation.  
RUN  
2. How do I bypass (not  
use) the program?  
Press PROGRAM  
to make certain the thermostat is in the run program mode, then  
RUN  
to bypass the program and operate the thermostat manually press the MODE  
to select Heat or Cool (whichever you prefer) and press  
button  
or  
SYSTEM  
. Use the TEMP  
HOLD  
TEMP  
setting you choose will be held until you manually change it using the TEMP  
TEMP buttons. The thermostat will remain in the HOLD mode when you change  
temperature and maintain whatever temperature you set. If you decide to return to the  
program, press PROGRAM to cancel the hold feature.  
buttons to set the thermostat on the temperature you want. The temperature  
or  
RUN  
26  
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1F95-391  
FAQs  
The 1F95-391 has a feature called Adjustable Heating and Cooling Cycle times (also called  
Anticipation) that allows you to increase or decrease the cycle times in heating and cooling.  
This is useful if you think your cycle times are too long or too short. The higher the number  
you select, the longer the cycle. The lower the number you select, the shorter the cycle. The  
1F95-391 is adjusted in the Installer Table (see your installation instructions). The range of  
adjustment for HEATING is from 1 to 40. The factory Preset is 05, the range of adjustment  
for COOLING is from 9 to 40. The factory Preset is 24. The cooling will not go below 9  
because compressors require a longer cycle. See page 6 of your Installation Instructions.  
3. My furnace (air condi-  
tioning) cycles too fast  
(slow). Is there an adjust-  
ment?  
Normally the blower will turn off within a few minutes after the call for heat or cool. The  
blower running after the system shuts off may indicate (1) the thermostat is set to FAN ON,  
(2) the fan has been programmed to run at that time period or (3) something has damaged the  
thermostat or equipment. If the thermostat display indicates FAN ON, press the fan button  
once to set it to FAN AUTO, meaning the fan will cycle only with the equipment. If the  
4. Why does the blower fan  
keep running after the  
system has shut off?  
display indicates PRG FAN (Program Fan), sometime during programming, the  
FAN  
button was pushed. To remove PRG FAN (Program Fan), check all of the programmed  
times and temperatures. When you encounter PRG FAN, press the  
button to  
FAN  
remove it from that time period in the program. As a final test, set the thermostat to OFF.  
Verify that FAN ON or FAN AUTO is not displayed. If the fan continues to run, you may  
want to contact your heating and cooling service person for assistance.  
27  
FAQs  
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FAQs  
1F95-391  
5. Do I have to program a  
stop time for each program  
period?  
There is no need to select a time to stop a programming period. Starting a new programming  
period will stop the previous program period.  
6. My display light does not The display light in the 1F95-391 is not a replaceable item.  
work. Can it be fixed or  
replaced?  
7. Between Heating and  
Any time you wish to turn your system off, simply press  
button until the display  
SYSTEM  
Cooling seasons, I want to  
turn my system off. Will this system back on, press  
shows OFF. This will not affect your thermostat’s programming in any way. To turn the  
button until HEAT, OFF, COOL, or AUTO is displayed and  
SYSTEM  
change the program?  
press  
. The system will begin operating according to the current thermostat program.  
RUN  
8. Do I have to reprogram  
my thermostat after a power  
outage?  
The 1F95-391 will retain the last program entered indefinitely without power.  
9. How can I get an extra  
copy of the Operating  
Visit our website at www.white-rodgers.com for operating manuals.  
Manual for my thermostat?  
28  
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FAQs  
1F95-391  
10. What do I do if my  
system is not working  
Contact a Local Heating & Cooling service person or visit our website at  
www.white-rodgers.com to consult our “Where to Buy” Service/Dealer locator.  
properly and I need service?  
11. What does CHCK PAD This feature displays the words CHCK PAD (check humidifier) after a set time of humidifier  
on the display mean and  
how do I reset it?  
operation. This is a reminder to maintain or clean your humidifier. When CHCK PAD is  
displayed, you can clear it by pressing the SERVICE button.  
12.When I push the  
HUMD MX indicates the humidifier has not reached the current humidity setting in the last  
Humidity button, the  
10 heating cycles. If the condition persists, a service person may recommend additional  
display shows HUMD MX. humidifier capacity.  
What does this mean?  
13.Why does the system run In cooling, as the room temperature falls you will eventually reach the setpoint temperature.  
The system will continue to run until it reaches the low side of the temperature setting. As  
an example: If set to 78 degrees with the room temperature falling the thermostat will  
continue to call for cool as the temperature decreases in the following manner. 78.9, 78.8,  
78.7, 78.6, 78.5, 78.4, 78.3, 78.2, at approximately 78.2 the thermostat will quit calling for  
cool. This is why it is not unusual for the room temperature and set temperature to read the  
same but the system continues to run. The amount of time it takes for the system to shut off  
with the setpoint and room  
temperature the same?  
29  
FAQs  
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FAQs  
1F95-391  
(cont.)  
is dependent on system sizing, thermostat location, etc. Note: The thermostat display only  
13.Why does the system run displays whole numbers. Internally the thermostat calculates decimals.  
with the setpoint and room  
temperature the same?  
In heating as the room temperature increases the system will continue to run until the  
thermostat reaches the high side of the temperature setpoint.  
14. How do I reset my  
thermostat?  
There are 3 possibilities to consider, excluding tampering.  
1. Loss of power from the system, 24VAC should be constant to maintain a display.  
2. Static electricity or a voltage spike from the heating equipment might be resetting the  
thermostat. Static electricity can be eliminated by touching something before touching the  
thermostat to dissipate the static charge. A voltage spike from the equipment can be  
eliminated using an isolation relay as described in the link below.  
You can also check the wire routing to verify the thermostat or remote wires are not running  
parallel to high voltage lines with high inductive loads which could (in extreme cases)  
create a voltage spike at the thermostat.  
3. Thermostat not functioning properly. A simple test would be to bench test one of the units  
for a couple of days to see if it resets or move it to another system where a reset has never  
occurred.  
30  
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FAQs  
1F95-391  
15. How do I temporarily  
Override the program and  
Hold Til Timing?  
Any time your program is running and you would like to override it for a specific amount  
of time, press  
or  
until the temperature you want is displayed. The display will  
indicate HOLD, and the number of hours remaining in the hold period will be indicated  
with the word HRS. To adjust the length of time for the override, press TIME FWD or  
TIME BACK. The time you select will become the new number of hours for the Hold Til  
timing. Once your time is selected, let the thermostat revert back to normal operation on its  
own to accept the change.  
16. What is the  
thermostat Click Test?  
Many furnaces have safety devices that shut the system down when a lock-out condition  
occurs in the furnace. If the thermostat is turned off or the call for heat is cancelled (by  
lowering and then raising the set temperature) the furnace may start operating again. A  
diagnostic to see if the thermostat is operating when the room temperature is below the  
thermostat setting (in heat) is to lower the setting below the room temp. Within about 3  
seconds the thermostat should make a soft click sound. This sound is the thermostat turning  
off the call for heat and usually indicates the thermostat is operating properly. If the  
thermostat does not click you would be suspicious of the thermostat and try resetting it by  
following it’s reset operation. 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 and the heat works intermittently contact the furnace manufacturer or local service  
person. They will want to observe the condition when it is not working.  
31  
FAQs  
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FAQs  
1F95-391  
(cont.)  
16. What is the thermostat  
Click Test?  
You can raise and lower the temperature a few degrees above and below the room tempera-  
ture and each time expect to hear the thermostat click on and off within a few seconds. If it  
clicks, it is operating properly.  
17. What do AUX,  
EMER, and MALF  
indicators mean on a  
heat pump thermostat?  
Aux. = Auxiliary Heat or the second stage of heat in the Heat mode. This is energized  
when the Heat Pump is not keeping up with the thermostat setting. It is normal operation  
with most pumps for the thermostat to call for auxiliary heat.  
Emer. = Emergency Heat. When switched to Emergency the thermostat bypasses the pump  
and uses the back-up heat. This is useful if the pump is not operating correctly or if the  
temperature outside is so cold that the pump is not economical to run.  
Malf. = Malfunction. Malfunction indicates the heat pump system is sending a signal to the  
Malfunction Light on the thermostat terminal marked “L”. It does not indicate a malfunc-  
tion in the thermostat. The manufacturer of the Heat Pump system can determine the likely  
cause of malfunction indication on the thermostat.  
In many heat pump systems Emergency and Auxiliary heat are the same source. If you  
switch the thermostat to Emergency it will bypass the heat pump and bring on the back-up  
heat. If you leave the thermostat in the Heat mode it will call for Auxiliary when the pump  
is not keeping up with your setpoint temperature. Emergency is energized on a call for heat  
in the Emergency heat mode.  
32  
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TROUBLESHOOTING  
RESETTING THERMOSTAT  
The thermostat can be reset back to factory default programs and configuration options. Removing power from the thermostat will  
not reset it to the default settings. Before resetting the thermostat you may want to make note of the previously selected configura-  
tion options and programming.  
To reset the thermostat, press and release PROGRAM  
, then press the  
, TIME  
and  
buttons at the  
BACK  
RUN  
FAN  
same time. This will reset the thermostat to factory default programs and configuration. The display will momentarily go  
blank, and then all segments on the display will momentarily be shown. The thermostat will then go into the AUTO HOLD  
mode and will maintain a factory preset temperatures of 62°F in Heat or 85°F in Cool. To clear the HOLD TEMPERA-  
TURE overide press the PROGRAM  
button.  
RUN  
SYMPTOM  
POSSIBLE CAUSE  
CORRECTIVE ACTION  
No Heat/No Cool/No Fan  
(common problems)  
1. Blown fuse or tripped circuit  
breaker.  
Replace fuse or reset breaker.  
2. Furnace power switch to OFF.  
3. Furnace blower compartment  
door or panel loose or not properly  
installed.  
Turn switch to ON.  
Replace door panel in proper position to engage  
safety interlock or door switch.  
33  
Index  
Troubleshooting  
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CORRECTIVE ACTION  
SYMPTOM  
POSSIBLE CAUSE  
Re-light pilot.  
No Heat (Heat may also be  
intermittent.)  
1. Pilot light not lit.  
2. Thermostat not set to Heat.  
Press the  
button until Heat is displayed and  
SYSTEM  
raise temperature above room temperature.  
Verify thermostat and system wires are securely  
attached.  
3. Loose connection to thermostat or  
system.  
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 service person for assistance.  
4. Furnace Lock-Out Condition.  
Press the  
button to Cool and lower tempera-  
No Cool  
SYSTEM  
1. Thermostat not set to Cool.  
ture below room temperature.  
Verify thermostat and system wires are securely  
attached.  
2. Loose connection to thermostat or  
system.  
Press the  
button until Cool is displayed and  
SYSTEM  
3. Cooling system requires service or  
thermostat requires replacement.  
lower setpoint below room temperature.  
There may be five minute delay before the  
thermostat clicks in cooling.  
34  
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SYMPTOM  
POSSIBLE CAUSE  
CORRECTIVE ACTION  
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 terminal screws.  
2. Possible short in thermostat.  
Try resetting the thermostat as described on page 31.  
3. Possible short in heat/cool/fan  
system.  
4. Fan Switch is set to Fan On.  
If the FAN button is pressed to display ON, the  
blower fan will cycle continuously whether the  
heating or cooling system is running, press the FAN  
button until AUTO is displayed. 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.  
35  
Troubleshooting  
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POSSIBLE CAUSE  
CORRECTIVE ACTION  
SYMPTOM  
INDEX  
1. The location of the thermostat  
and/or the size of the Heating System temperature control and may cycle faster than some  
may be influencing the cycle rate.  
Digital thermostats normally provide precise  
Furnace Cycles Too Fast or  
Too Slow (narrow or wide  
temperature swing)  
older mechanical models. A faster cycle rate means  
the unit turns on or off more frequently but runs for  
a shorter time so there is no increase in energy use.  
If you would like to increase the cycle time, refer to  
the Installation Instructions under Installer Table for  
settings. If an acceptable cycle rate is not achieved  
by the adjustment in the Installer Table then you  
may want to contact a local heating and air condi-  
tioning service person for further suggestions.  
1. The location of the thermostat  
and/or size of the Cooling System  
can influence the rate.  
The cycle rate for cooling is fixed and can not be  
adjusted. Contact a local service person for sugges-  
tions.  
Cooling Cycles Too Fast or  
Too Slow (narrow or wide  
temperature swing)  
36  
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SYMPTOM  
POSSIBLE CAUSE  
CORRECTIVE ACTION  
INDEX  
1. Thermostat thermometer setting  
requires adjustment.  
The thermostat can be adjusted +/- 5°F. See the  
Temperature DisplayAdjustment in the Operating  
Manual under configuration.  
Thermostat Setting and  
Thermostat Thermometer  
Disagree  
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 a static discharge occurs use the  
Reset Operation listed above.  
Thermostat Does Not Follow  
Program  
3. Voltage spike or static discharge.  
1. Voltage spike or static discharge. Check heat/cool system for proper operation. If a  
Blank Display and/or Keypad  
Not Responding  
voltage spike occurs, use the Reset Operation by  
pressing FAN, TIME  
, and the temperature  
BACK  
arrow at the same time.  
37  
Troubleshooting  
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INDEX  
Adjustable Humidity Display ------- 25  
Adjustable Temperature Display --- 19  
Air Filter Change-Out Indicator ---- 23  
Automatic Heat/Cool Changeover - 19  
Keypad Lockout ---------------------- 20 Selectable Energy Management  
Operation  
Manual ----------------------------- 12 Set  
Programmed ----------------------- 12  
Program  
Entering Your---------------------- 12  
Recovery (EMR) -------------------- 6  
Clock ------------------------------- 12  
Day --------------------------------- 12  
Program ---------------------------- 12  
Compressor Short-Cycle  
Protection -------------------------- 21  
CONFIGURATION -------------------- 4  
Configuration Menu Chart ------------ 4  
Factory Preprogramming ------------ 18  
FAQs ----------------------------------- 26  
FEATURES --------------------------- 18  
Humidifier Maintenance Indicator - 23  
Humidifier Control and Monitoring 26  
Planning Your --------------------- 12 System and Thermostat  
PROGRAMMING ------------------- 12  
Programmable Automatic Humidity  
Diagnostics ------------------------ 24  
Temporary Program Override------- 18  
Reduction -------------------------- 25 Thermostat Startup After Total  
Programmable Fan Control --------- 19 Power Loss ------------------------ 20  
Programmable Vacation Time/Temp 19 TROUBLESHOOTING ------------- 32  
Pushbutton Backlight ---------------- 18  
Schedule  
Indefinite Program Hold  
(Bypassing the Program) -------- 18  
Sample Programs ----------------- 14  
INTRODUCTION --------------------- 3  
Thermostat Buttons ----------------- 1  
(LCD) Display ---------------------- 2  
Personal Programs ---------------- 16  
38  
NOTES  
39  
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PART NO. 37-6528B  
White-Rodgers is a division  
of Emerson Electric Co.  
The Emerson logo is a  
trademark and service mark  
of Emerson Electric Co.  
Replaces 37-6528A  
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