Blue 2” Single Stage Thermostat
Installation and Operating Instructions
Save these instructions for future use!
Model
Programming Choice
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS
CAREFULLY BEFORE INSTALLING OR OPERATING THIS
CONTROL COULD CAUSE PERSONAL INJURY AND/OR
PROPERTY DAMAGE.
1F87-0261
7 Day Programmable
APPLICATIONS
1F87-0261 Thermostat
For use with the following Class II systems:
•
•
Single Stage systems
Single-stage heat pump systems with no Aux heat
DO NOT USE WITH:
•
Systems exceeding 30 VAC and 1.5 amps
•
3-wire zoned hydronic heating systems
SPECIFICATIONS
Electrical Rating:
Battery Power................................................. mV to 30 VAC, 50/60 Hz or DC
Input-Hardwire................................................ 20 to 30 VAC
Terminal Load........................................................ 1.0 A per terminal, 1.5A maximum all terminals combined
Setpoint Range...................................................... 45° to 90°F (7° to 32°C)
Differential (Single Stage)...................................... Heat 0.6°F; Cool 1.2°F (adjustable)
Differential (Heat Pump)........................................ Heat 1.2°F; Cool 1.2°F (adjustable)
Operating Ambient................................................. 32° to +105°F (0° to +41°C)
Operating Humidity................................................ 90% non-condensing max.
Shipping Temperature Range................................ -40° to +150°F (-40° to +65°C)
Dimensions Thermostat......................................... 3-3/4”H x 4-3/4”W x 1-1/2”D
PRECAUTIONS
This thermostat is intended for use with a low voltage NEC
WARNING
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could cause
shock or fire hazard.
!
Class II 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 exceed the specification ratings.
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.
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 (current limited)
circuits per the NEC code. Failure to do so could
cause a fire hazard.
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.
PART NO. 37-7038B
Replaces 37-7038A
0950
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INSTALLATION
automatically start the heating system at 5:00 AM, so that the
programmed temperature of 70°F is reached by about 6:00
AM.
ENERGY MANAGEMENT RECOVERY
(EMR)
When the EMR feature is activated the thermostat’s
microcomputer calculates the time it will take to change the
room temperature to the next heat or cool program setting.
Then the thermostat will start the system before the next
programmed period so that the desired temperature is reached
at or near the beginning of the period (the thermostat calculates
15 minutes for every 1°F temperature change). This feature
provides better efficiency by allowing gradual temperature
changes.
If the overnight room temperature drops only to 68°F, the
thermostat will startthesystemat5:30 toreach theprogrammed
temperature of 70°F at 6:00.
The thermostat is shipped with the EMR feature active, which
means that the thermostat will start the heating system before
the beginning of the next program period.
To deactivate the EMR function, see the Configuration menu
on Page 5).The thermostat will then wait until the programmed
time to start the system for a temperature change.
For example: The thermostat is programmed to provide an
overnight heating temperature of 66°F, and during the next
program period, beginning at 6:00 AM, the programmed
temperature is 70°F. With EMR activated, the thermostat will
WIRING DIAGRAMS
Optional Jumper for
Single Stage Heat Pump
THERMOSTAT
R
O/B
Y
G
W
C
SYSTEM
Changeover
Relay*
Fan
Relay
Optional
Compressor
Contactor
Heat Relay
Hot
24 VAC
120 VAC
Neutral
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
TRANSFORMER
(Class II Current Limited)
Figure 2.Typical wiring diagram for single transformer single stage systems
NOTE
If safety circuits are in
only one of the systems,
remove the transformer
of the system with NO
safety circuits.
Optional Jumper for
Single Stage Heat Pump
THERMOSTAT
SYSTEM
O/B
Y
G
W
C
R
CUT AND
TAPE OFF!
Changeover
Relay*
Fan
Relay
Limit or
Safety
Switches
Optional
HOT
120 VAC
24 VAC
Compressor
Contactor
Heat Relay
NEUTRAL
Hot
24 VAC
120 VAC
Neutral
TWO COMMONS MUST
BE JUMPERED TOGETHER!
TRANSFORMER
(Class II Current Limited)
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
Figure 3.Typical wiring diagram for two transformer single stage systems with NO safety circuits
3
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WIRING DIAGRAMS
NOTE
Polarity must be observed. If the HOT side of the
second transformer is jumpered to the COMMON side
of the first transformer a short will be made. Damage
to equipment will occur when power is restored.
Optional Jumper for
Single Stage Heat Pump
THERMOSTAT
O/B
Y
G
W
C
R
SYSTEM
Limit or
Safety
Limit or
Safety
Switches
HOT
Switches
24 VAC
120 VAC
Changeover
Relay*
Fan
Relay
NEUTRAL
Optional
24 VAC
Auxiliary
Heating
Transformer
(Class II
NOTE
ACCESSORY
RELAY N.O.
CONTACT
The accessory relay scheme
is required when safety
circuits exist in both systems.
Compressor
Contactor
Heat
Relay
Current Limited)
COMMON
TWO COMMONS MUST
BE JUMPERED TOGETHER!
Limit or
Limit or
Safety
Switches
Safety
HOT
Switches
COMMON
24 VAC
120 VAC
NEUTRAL
* Changeover Relay is energized in COOL when O/B switch is in the “O” position
Changeover Relay is energized in HEAT when O/B switch is in the “B” position
Heat Pump Transformer
(Class II Current Limited)
Figure 4.Typical wiring diagram for two transformer single stage systems with safety circuits in BOTH systems
THERMOSTAT QUICK REFERENCE
12
Before you begin programming your thermostat, you should be
familiar with its features and with the display and the location
and operation of the thermostat buttons and switches (see
fig. 5). Your thermostat consists 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.
Displays current temperature.
13
“Service”indicatesadiagnosticfaultintheheating/cooling
system. It does not indicate a fault in the thermostat.
14
“Change Filter” is displayed when the system has run for
the programmed filter time period as a reminder to change
or clean your air filter.
15
“
” indicates power level of batteries. “Change
”
indicates batteries should be replaced.
The Thermostat Buttons and Switches
16
17
18
Indicates time.
1
2
3
4
5
6
7
Raises temperature setting.
Lowers temperature setting.
TIME button.
“A”“P” indicates time as Morning (A) Evening (P).
“Temp Hold”indicates temporary hold or “Hold” indicates
hold mode.
SYSTEM switch (COOL, OFF, HEAT, EMER).
PRGM (program) button.
FAN switch (ON, AUTO).
RUN/HOLD (program) button.
Figure 5.Thermostat display, buttons, and switches
1
2
The Display
Indicates days of the week.
8
9
Indicates setpoint temperature.This is blank when system
switch is in the OFF position. Setpoint temperature is
displayed (flashing) if the thermostat is in lockout mode to
prevent the compressor from cycling too quickly.
SYSTEM
10
“Save” indicates the Cool Savings feature is enabled in
the configuration menu. “Save” (flashing) indicates Cool
Savings feature is active.
3
4
7
6
5
11
Flame icon ( ) is displayed when the SYSTEM switch is
in the HEAT position. Flame icon ( ) is displayed flashing
17
13
18
when thermostat is calling for heat. Snowflake icon (
)
8
9
16
15
is displayed (non-flashing) when the SYSTEM switch is
in the COOL position. Snowflake icon ( ) is displayed
(flashing) if the thermostat is calling for cool.
10
14
12
11
4
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INSTALLER/CONFIGURATION MENU
The configuration menu allows you to set certain thermostat HOLD to change to the next menu item or press TIME to go
operating characteristics to your system or personal backwards to the previous item in the menu. To exit the menu
requirements. To enter the menu: Set your thermostat to OFF and return to the program operation, press PRGM. If no keys
and press the
and
buttons simultaneously.The display are pressed within fifteen minutes, the thermostat will revert to
will show the first item in the configuration menu. Press RUN/ normal operation.
Configuration Menu
Menu
Reference
Number
Press
Key
Displayed
(Factory
Default)
Comments
Press
to select from
listed options
or
1
SS
HP
Select Single Stage (SS) or
Heat Pump (HP, 1 compressor)
and
2
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
CS
(OFF)
On
Select Cool Savings Feature On or OFF
CS
(3)
1, 2, 3, 4, 5, 6
OFF
If CS selected On, selects Cool Savings value
Select Energy Management Recovery On or OFF
3
4
E
(On)
CR Heat
(ME)
FA, SL
SL
Select Adjustable Anticipation, cycle rate,
Heat Single Stage
5
CR Cool
(FA)
Select Adjustable Anticipation, cycle rate,
Cool Single Stage
6
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
RUN/HOLD*
CL
(OFF)
On
Select Compressor lockout OFF or On
7
L
(On)
OFF
Select Display Light On or OFF
8
Temp
(0 HI)
oF
4 LO to
4 HI
oC
Select temperature display adjustment higher or lower
9
Select oF / oC Display (temperature units in Fahrenheit
or Celsius)
10
Change Filter
On
Select filter replacement indicator OFF or On
(OFF)
Change Filter
25 to 1975
If Change Filter selected On, selects time interval for
Change Filter Indicator. (in 25 hour increments)
(200 h)
11
Returns to normal operation
*Press RUN/HOLD to advance to next item or TIME to move backwards to previous item
3) Select Energy Management Recovery
-
Energy
1) System Configuration - Selects SS (Single Stage) or HP
(Heat Pump) operating mode. Default configuration is SS.
For Heat Pump operation choose HP.
Management Recovery (E) On enables the thermostat
to start heating or cooling early to make the building
temperature reach the program setpoint at the time you
specify. Heating will start 5 minutes early for every 1° of
temperature required to reach setpoint.
2) Select CS (Cool Savings™) - With Cool Savings™
enabled, the thermostat will make small adjustments to
the Setpoint temperature during periods of high demand
to reduce cooling system running time and save energy.
When the cooling system has been running for more than
20 minutes, humidity in the home will be lower and a higher
setpoint temperature will feel comfortable. After 20 minutes
of run time, the thermostat will start increasing the setpoint
temperature in steps of less than one degree as the system
continues to run. These adjustments will eventually cause
the system to satisfy the thermostat and turn the system off
to reduce the energy consumption. When the Cool Savings
feature is active and making adjustments, the display will
show “Save”.The amount of the adjustments to the setpoint
temperature is dependent on the Cool Savings value that
is set, 1 being the least adjustment and 6 being the most
adjustment. With this feature set to OFF, no change will
occur when the cooling system is continuously running
during the periods of high demand. Periods of high demand
will normally occur during the late afternoon and early
evening on the hottest days of the summer.
4 & 5) Select Cycle Rate Selection - The factory default
setting for Single Stage Heat is Medium Cycle (ME). For
Single Stage Cool the default setting is fast (FA).To change
cycle rate, press the
and
buttons.
The cycle rate differentials for different settings are:
MODE
Fast
(FA)
Medium
(ME)
0.8°F
-
Slow
(SL)
SS Heat
SS Cool
0.6°F
1.2°F
1.2°F
1.7°F
6) Select Compressor Lockout CL OFF or ON - Selecting
CL On will cause the thermostat to wait 5 minutes between
cooling cycles. This is intended to help protect the
compressor from short cycling. Some newer compressors
already have a time delay built in and do not require this
feature. Your compressor manufacturer can tell you if the
5
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INSTALLER/CONFIGURATION MENU
lockout feature is already present in their system. When the
thermostat compressor time delay occurs, it will flash the
setpoint for up to five minutes.
9) Select F° or C° Readout - Changes the display readout to
Celsius or Fahrenheit as required.
10) Select Filter Replacement Reminder and Set Run Time
Select the “Change Filter” reminder On or OFF. If selected
On, press RUN/HOLD to select the time period from 25 to
1975 hours in 25 hour increments. In a typical application,
200 hours (default) of run time is approximately 30 days.
After the selected time of blower operation, the thermostat
will display “Change Filter” as a reminder to change or
clean your air filter. When “Change Filter” is displayed,
press the RUN/HOLD button to clear the display and restart
the time to the next filter change. A selection of OFF will
cancel this feature.
7) Select Backlight Display - The display backlight improves
display contrast in low lighting conditions. When the “C”
terminal is connected, selecting backlight CdL On will keep
the light on continuously. Select backlight OFF will turn the
light on momentarily when any key is pressed. When the
“C” terminal is not connected, regardless of the backlight
selection, the light will be on momentarily when any key is
pressed.
8) Select Temperature Display Adjustment 4 LO to 4 HI -
Allows you to adjust the room temperature display up to 4°
higher or lower. Your thermostat was accurately calibrated
at the factory but you have the option to change the display
temperature to match your previous thermostat. The
current or adjusted room temperature will be displayed on
the display.
OPERATION
3. Press
to adjust temperature setting above room
CHECK THERMOSTAT OPERATION
If at any time during testing your system does not operate
temperature. The cooling system should stop operating.
properly, contact a qualified service person.
CAUTION
!
Turn on power to the system.
Do not allow the compressor to run unless the
compressor oil heaters have been operational for 6
hours and the system has not been operational for at
least 5 minutes.
Fan Operation
If your system does not have a G terminal connection, skip to
Heating System.
1. Move fan switch to ON position.The blower should begin to
operate.
MANUAL OPERATION
HOLD TEMPERATURE — With the SYSTEM switch set
to HEAT or COOL, momentarily press RUN/HOLD button.
2. Move fan switch to AUTO position. The blower should stop
•
•
immediately.
HOLD will be displayed. Use
or
to adjust the
temperature.The thermostat will hold the room temperature
at the selected setting until you press RUN/HOLD button to
start program operation again.
Heating System
1. Move SYSTEM switch to HEAT position. If the auxiliary
heating system has a standing pilot, be sure to light it.
TEMPERATURE OVERRIDE (TEMPORARY HOLD)
Press or untilthetemperatureyouwantisdisplayed.
The thermostat will override current programming and
keep the room temperature at the selected temperature for
2 hours or until the next program period begins. Then the
thermostat will automatically revert to the program.
—
2. Press
to adjust thermostat setting to 1° above room
temperature. The system should begin to operate.
3. Press
to adjust temperature setting below room
temperature. The heating system should stop operating.
Cooling System
CAUTION
!
To prevent compressor and/or property damage, if the
outdoor temperature is below 50oF, DO NOT operate
the cooling system.
1. Move SYSTEM switch to COOL position.
2. Press
to adjust thermostat setting below room
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. However, if the
setpoint temperature is flashing, the compressor lockout
feature is operating (see Configuration menu, item 6).
6
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PROGRAMMING
EnteringYour Program
PROGRAMMINGYOUR THERMOSTAT
This section will help you plan your thermostat’s program to
meet your needs. For maximum comfort and efficiency, keep
Set Current Time and Day
1. Press TIME button once. The display will show the hour
the following guidelines in mind when planning your program.
only.
•
When heating (cooling) your building, program the
temperatures to be cooler (warmer) when the building is
vacant or during periods of low activity.
EXAMPLE:
2. Press and hold either
or
until you reach the correct
•
During early morning hours, the need for cooling is usually
minimal.
hour and AM/PM designation (AM begins at midnight; PM
begins at noon).
3. Press TIME once again. The display window will show the
PlanningYour Program
minutes only.
Look at the factory preprogrammed times and temperatures
shown in the sample schedule. If this program will suit your
needs, simply press the RUN/HOLD button to begin running
the factory preset program.
EXAMPLE:
4. Press and hold either
minutes.
or
until you reach the correct
If you want to change the preprogrammed times and
temperatures, follow these steps.
5. Press TIME once again. The display will show the day of
the week.
Determine the time periods and temperatures for your program.
You must program four periods for each day. However, you
may use the same heating and cooling temperatures for
consecutive time periods. You can choose start times, heating
temperatures, and cooling temperatures independently (for
example, you may select 5:00 AM and 70° as the daily 1st
period heating start time and temperature, and also choose
7:00 AM and 76° as the daily 1st period cooling start time
and temperature).
6. Press
or
until you reach the current day of the
week.
7. Press RUN/HOLD once. The display will show the correct
time, day, room temperature and set-point temperature.
Enter Heating Program
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
currently programmed temperature (flashing).
Use the table to plan your program time periods and the
temperatures you want during each period. Fill in the complete
table to have a record of your programs.
SAMPLE
Heating/Cooling Schedule Plan (Factory Program)
EXAMPLE:
ALL DAYS OF THE WEEK
Period
1ST
Temperature
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
This display window shows that for the 1st Monday
period, the start time is 6:00 AM, and 70° is the
programmed temperature (this example reflects factory
preprogramming).
70F
2ND
3RD
4TH
1ST
2ND
3RD
4TH
62F
70F
3. Press
or
to change the displayed temperature
to your selected temperature for the 1st heating program
period.
62F
78F
85F
78F
82F
Heating/Cooling Schedule Plan
PERIOD 2 PERIOD 3
PERIOD 1
COOL
Time Temp
PERIOD 4
HEAT
Time Temp
HEAT
Time Temp
COOL
HEAT
Time Temp
COOL
HEAT
Time Temp
COOL
Time Temp
Time Temp
Time Temp
Mon
Tues
Wed
Thur
Fri
Sat
Sun
7
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PROGRAMMING
4. Press TIME once (the programmed time will flash). Press
CHECKYOUR PROGRAMMING
Follow these steps to check your thermostat programming one
final time before beginning thermostat operation.
or
until your selected time 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.
1. Move SYSTEM switch to HEAT position.
2. Press PRGM to view the 1st heating period time and
temperature for Monday. Each time you press PRGM, the
next heating period time and temperature will be displayed
in sequence for each day, (you may change any time or
temperature during this procedure).
5. Press PRGM once. The currently programmed start time
and setpoint temperature for the 2nd heating program
period will appear.
6. Repeat steps 3 and 4 to select the start time and heating
temperature for the 2nd heating program period.
3. Press RUN/HOLD.
7. Repeat steps 3 through 5 for the 3rd and 4th heating
4. Move SYSTEM switch to COOL position.
5. Repeat step 2 to check cooling program.
program periods.
8. Press PRGM once. “TU” (indicating Tuesday program)
will appear in the display, along with the start time for
the 1st heating period and the currently programmed
temperature.
6. Move SYSTEM switch to HEAT or COOL and press RUN/
HOLD to begin program operation.
9. Repeat steps 3 through 8 to complete heating programming
YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO
PROVIDE MAXIMUM COMFORT AND EFFICIENCY!
for all periods each day.
10. When you have completed entering your heating program,
press RUN/HOLD.
Enter Cooling Program
CAUTION
!
If the outside temperature is below 50oF, disconnect
power to the cooling system before programming.
Energizing the air conditioner compressor during
cold weather may cause personal injury or property
damage.
1. Move SYSTEM switch to COOL position.
2. Follow Enter Heating Program for entering your
cooling program, using your selected cooling times and
temperatures.
8
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TROUBLESHOOTING
Reset Operation
If a voltage spike or static discharge blanks out the display
or causes erratic thermostat operation, reset the thermostat
If the thermostat has power, has been reset and still does not
function correctly contact your heating/cooling service person
or place of purchase.
by pressing the
,
and TIME buttons simultaneously.
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. Turn switch to ON.
3. Furnace blower compartment door or Replace door panel in proper position to engage safety
panel loose or not properly installed. interlock or door switch.
No Heat
1. System Switch not set to Heat.
Set System Switch to Heat and raise setpoint above
room temperature.
2. Loose connection to thermostat or
system
3. Heating System requires service or
thermostat requires replacement.
Verify thermostat and system wires are securely attached.
Diagnostic: Set System Switch to Heat and raise the
setpoint above room temperature. Within a five minutes
the thermostat should make a soft slick 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 manufac-
turer or a service person to verify the heating system is
operating correctly.
No Cool
1. System Switch not set to Cool.
Set System Switch to Cool and lower setpoint below
room temperature.
2. Loose connection to thermostat or
system.
3. Cooling System requires service or
thermostat requires replacement
Verify thermostat and system wires are securely attached.
Same procedures as diagnostic for No Heat condi-
tion 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. Possible short in wiring.
2. Possible short in thermostat.
3. 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 as described below. 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.
4. Fan Switch set to Fan On.
Furnace CyclesToo Fast orToo Slow 1. The location of the thermostat and/
Item 4 (CR Heat) or 5 (CR Cool) in the Configuration
Cooling CyclesToo Fast orToo Slow
(narrow or wide temperature swing)
or the size of the Heating or Cooling Menu is the adjustment that controls the cycle rate. If
System may be influencing the
an acceptable cycle rate is not achieved using the FA
(Fast) or SL (Slow) adjustment contact a local service
person for additional suggestions.
cycle rate.
Thermostat Setting and
Thermometer Disagree
1. Thermostat thermometer setting
requires adjustment.
The thermometer can be adjusted +/-4 degrees as
listed in item 8 of the Configuration Menu. No other
adjustment is possible.
Clock Loses or Gains Time
1. Loss of power to thermostat.
The thermostat will maintain its program in memory
even with no power 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 3)
Thermostat Does Not Follow
Program
1. AM or PM set incorrectly in program. Check current clock and program settings including
2. AM or PM set incorrectly on the clock. the AM or PM designations for each time period. If a
3. Voltage spike or static discharge.
voltage spike or static discharge occurs use the Reset
4. See “Heat or Cool Starts Early” above. Operation listed above.
Blank Display and/or Keypad Not 1. Voltage Spike or Static Discharge.
Responding
If a voltage spike or static discharge occurs use the
Reset Operation listed above.
9
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NOTES
10
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NOTES
11
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Homeowner Help Line: 1-800-284-2925
White-Rodgers is a division
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
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