Blue Universal Thermostat with
Automatic Heat/Cool Changeover Option
Single Stage, Multi-Stage or Heat Pump
Installation and Operating Instructions for Models:
Save these instructions for future use!
Model
Programming Choices
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS
CAREFULLY BEFORE INSTALLING OR OPERATING
THIS CONTROL COULD CAUSE PERSONAL INJURY
AND/OR PROPERTY DAMAGE.
5+1+1 Day 5+2 Day Non-Programmable
Non-Programmable
1F85-0422
1F83-0422
APPLICATIONS
THERMOSTAT APPLICATION GUIDE
1F83-0422 Thermostat
Description
Heat Pump (No Aux. or Emergency Heat)
Heat Pump (with Aux. or Emergency Heat)
Systems with up to 2 Stages Heat, 2 Stages Cool
Heat Only Systems (with optional fan switch)
Millivolt Heat Only Systems – Floor or Wall Furnaces
Cool Only Systems
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Gas or Oil Heat
Electric Furnace
Hydronic (Hot Water) Zone Heat – 2 Wires
Hydronic (Hot Water) Zone Heat – 3 Wires
SPECIFICATIONS
Electrical Rating:
Battery Power.................................................... mV to 30 VAC, NEC Class II, 50/60 Hz or DC
Input-Hardwire................................................... 20 to 30 VAC
Terminal Load........................................................... 1.5 A per terminal, 2.5A maximum all terminals combined
Setpoint Range......................................................... 45° to 90°F (7° to 32°C)
Rated Differentials:
Fast
Med.
0.6 °F
1.2 °F
1.2 °F
–
Slow
Heat (SS1, MS2) ............................................... 0.4 °F
Cool (SS1, MS2)................................................ 0.9 °F
Heat Pump (HP1, HP2) ..................................... 0.9 °F
Emer (HP1, HP2)............................................... 0.6 °F
1.7 °F
1.7 °F
1.7 °F
1.7 °F
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............................................ 3-7/8”H x 5-1/8”W x 1-1/4”D
ATTENTION: MERCURY NOTICE
This product does not contain mercury. However, this
product may replace a product that contains mercury.
CAUTION
To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse or
circuit breaker box until installation is complete.
!
Mercury and products containing mercury must not be
discarded in household trash. Do not touch any spilled
mercury. Wearing non-absorbent gloves, clean up any
spilled mercury and place in a sealed container. For prop-
er disposal of a product containing mercury or a sealed
container of spilled mercury, place it in a suitable shipping
tion to send product containing mercury.
Index
Page
Installation
2
2
3
4
6
7
8
Wiring Connections
Thermostat Quick Reference
Installer Configuration Menu
Operating Your Thermostat
Programming
Troubleshooting
PART NO. 37-7240B
Replaces 37-7240A
1316
THERMOSTAT QUICK REFERENCE
Home Screen Description
Figure 3 – Home Screen Display
Setting
Room
Time of day (1F85 only)
Temperature
Temperature
Mo
Set
P
Displays the power level of
the 2 “AA” batteries:
indicates good power level
indicates batteries at about
half power. “Change
” indicates
batteries are low and should be
replaced with 2 new premium brand
“AA” Alkaline batteries.
(See page 2 for more details)
SYSTEM
Heat
FAN
Auto
Menu
System
Indicator
Fan
Indicator
Figure 4 – Programming & Configuration Items
13
2
4
14
Mo Tu We Th Fr Sa Su
P Date
Temp Hold
Set
12
8
Save
Month Call For Service
Year
Change
Filter
System On
Heat Pump
SYSTEM
Heat Emer Auto
Cool Oꢀ Time
3
9
10
11
Hold
1
2
Auto Sched
Cool Savings
FAN
On Auto
Run Sched
Run
Schedule
Menu
6
7
5
Displays “Save” when Cool SavingsTM is working.
Programming and Configuration Items
8
“System On” indicates when heating or cooling stage
is energized, “+2” flashing indicates when a second
stage is energized.
Displays “Heat Pump” when system is configured
as Heat Pump thermostat.
1
2
3
9
Displays “Hold” in programmable mode when not in
“Hold” mode. Displays Light Bulb in non-programmable
mode.
10
The word HOLD is displayed when the thermostat is in
the HOLD mode. Temp HOLD is displayed when
the thermostat is in a Temporary HOLD mode.
Initially displays “Auto Sched”. If Auto Schedule had
been used or disabled, then it displays “Cool Savings”
when in the Cool Mode if Cool Savings has been ena-
bled in the menu.
11
Displays Change Filter when the system has run for
the programmed filter time period as a reminder to
change or clean your filter.
Displays “Set” for setpoint when in Run Program mode.
4
“Call For Service” indicates a fault in the heating/
cooling system, it does not indicate a fault in the
thermostat.
12
Displays System Mode (Heat, Emer, Auto, Cool, Off)
or Time in menu mode.
5
Alternates Time of Day and “LOC” when keypad lockout
Displays Fan Mode (On, Auto) or “Run Sched” in
13
6
is enabled.
Menu mode.
7
In Configuration Menu, shows screen number. If blank,
thermostat is earlier model and requires instruction sheet
Displays “Run Schedule”, “Schedule”, or “Menu”.
14
37-7136A.
3
INSTALLER/CONFIGURATION MENU
To enter the Configuration Menu, SYSTEM must be set to HEAT, COOL, EMER or AUTO. With thermostat in Heat, Cool or
Auto, in normal operation, press the Menu button for at least 5 seconds. The display will show item #1 in the table below. Press
Menu to advance to the next menu, Press
or
to change an item option. Shaded items are not available to 1F83.
INSTALLER/CONFIGURATION MENU
MENU
SCREEN #
MS/
DISPLAYED
Press
or
to
SS (FACTORY DEFAULT)
COMMENTS
select from listed options
1F85 1F83 HP
01 01
(OFF) Lk
L
Selects Keypad Lockout.
(Not available on earlier models, see 37-6894D)
Selects Keypad lockout combination number
02 02
03 03
(000) Lk
(MS 2)
001 to 999
HP 1, SS 1
Selects Multi-Stage (MS 2 No Heat Pump),
Heat Pump 1 (HP 1, 1 compressor),
or Single Stage (SS 1)
04 04
05 05
(GAS)
(ELE)
(0)
CS
(On)
E
(ME)
CR Heat
(ME)
CR Cool
(ME)
ELE
GAS
1, 2, 4, 5, 6
Select Gas or Electric heat
Selects Cool Savings
Value 1 (low) to 6 (high), Value 0 Disables Feature
Selects Energy Management Recovery (EMR)
On or OFF. 1F85 only
06
—
OFF
07 06
08 07
09 08
10 09
SL, FA
SL, FA
SL, FA
Adjustable Anticipation:
Selects heating cycle rate for MS or SS
Adjustable Anticipation: Selects the cycle rate for
cooling (only when MS2 or SS1 is selected in item 1)
Adjustable Anticipation (Heat Pump)
(only when heat pump is selected in #1)
Selects the cycle rate for Emergency mode and
Auxiliary stage if Heat Pump is selected in item 1)
Compressor Lockout Time
CR Heat Pump
(FA)
SL
CR Emer
(OFF) CL
11 10
12 11
CL On
Heat-Auto-Cool-Off
Auto-Off, Cool-Off,
Heat-Off without Fan,
Heat-Off Heat-Cool-Off
dL OFF
Selects System Mode Configuration
13 12
14 13
(On) dL
0
Selects Display Light On or OFF
Adjustable Ambient Temperature Display
1 HI, 2 HI, 3 HI, 4 HI,
(current temperature) 1 LO, 2 LO, 3 LO, 4 LO
15 14
Selects Fahrenheit/Celsius Temperature Display
°F
°C
15
16
—
16
17
18
L (90) Heat
L (45) Cool
P3
L 62 to L 89
L 46 to L 82
P0, P2
Selects Limited HEAT Range
Selects Limited COOL Range
Defaults for 5+1+1 programming (P3) but non-
programmable (PO) or 5+2 programming (P2)
is available on most models. 1F85 only
Automatic Schedule for heat mode. 1F85 only.
NA to Cool only system.
19
20
—
—
(On) AS Heat
(On) AS Cool
(On) FA Heat
(On) FA Cool
OFF
OFF
OFF
OFF
Automatic Schedule for cool mode. 1F85 only.
NA to Heat only system.
21 17
22 18
Fast Heat option may be disabled by selecting OFF.
NA to SS config. NA to Cool only system.
Fast Cool option may be disabled by
selecting OFF. NA to SS config.
NA to Heat only system.
23 19
(OFF) CA
(On) dS
Selects active Comfort Alert On or OFF.
Require CA II Module. (Not available on earlier models)
Selects Automatic daylight Savings Time option
On or OFF. 1F85 only
On
24
—
OFF
25 20
26 21
(OFF) Change Filter
(200 h) Change Filter
On
25-1975 h
Selects Filter Change-out Indicator On or OFF.
Change Filter time in 25 hour increments. This
menu only appears if On is selected in above.
Selects operation of the reversing valve terminal
(O/B) output as an O or B terminal.
27 22
(o) On Cool
(b) On Heat
4
INSTALLER/CONFIGURATION MENU
1 & 2)Keypad Lockout – This menu selection will display
“Lk” and “OFF” (default, keypad not locked out). The
ment 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. Heat-
ing will start 5 minutes early for every 1° of temperature
required to reach setpoint.
Example: E On is selected and your heating is pro-
grammed to 65° at night and 70° at 7 AM. If the build-
ing temperature is 65°, the difference between 65° and
70° is 5°. Allowing 5 minutes per degree, the thermostat
setpoint will change to 70° at 6:35 AM. Cooling allows
more time per degree, because it takes longer to reach
set temperature.
and
are used to toggle the selection between
OFF and “L” (keypad locked out). When the keypad
lockout selection is enabled “L”, and the MENU button
is pressed again, the display will indicate the number
“0” (default, still disabled) in the time digits. The
and
are used to set the combination number from 0
to 999. If a combination of 0 is selected and the MENU
button is pressed, the menu will be exited and keypad
will not be locked. If 1 to 999 is selected and the MENU
button is pressed, the combination is stored into memory
and the menu is exited. The “LOC” will display designat-
ing keypad locked with a valid combination. The SYSTEM
button will operate for 10 seconds after the menu mode
is exited to allow the user to change the mode from
“OFF” to the desired SYSTEM mode.
7, 8, 9 & 10) Cycle Rate Selection – The factory default set-
ting for Heat and Cool modes, SS1 and MS2 is medium
cycle (ME). For Heat Pump and HP1, the default setting
is medium (ME). For Emer (Aux) the default setting is fast
cycle (FA). To change cycle rate, press the
key.
or
While the keypad is locked out, a press of MENU will en-
ter the configuration menu. The first menu item displayed
Cycle rate differentials for different settings are:
is the combination code “0”. The
or
keys are
Fast
FA
Medium Slow
used to set the combination unlock number from 0 to
999. If the unlock number matches exactly with the com-
bination lock number stored in memory when the MENU
button is pressed, the keypad is unlocked and the “LOC”
is removed. If the unlock number does not match when
the MENU button is pressed, the combination returns to
“0” for another attempt to set the unlock code. To exit the
menu without unlocking the keypad, press RUN SCHED.
MODE
ME
SL
Heat (SS1, MS2)
Cool (SS1, MS2)
Heat Pump (HP1)
Emer (HP1)
0.4°F
0.9°F
0.9°F
0.6°F
0.6°F
1.2°F
1.2°F
-
1.7°F
1.7°F
1.7°F
1.7°F
11) Select Compressor Lockout CL OFF or ON – Select-
ing 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 com-
pressors already have a time delay built in and do not
require this feature.Your compressor manufacturer can
tell you if the lockout feature is already present in their
system. When the thermostat compressor time delay oc-
curs, it will flash the setpoint for up to five minutes.
12) System Mode Configuration – This thermostat is con-
figured for Heat and Cool with Auto Changeover (SYS-
TEM switch with Heat, Auto, Cool, Off). It can also be
configured for Heat and Cool (Heat, Cool, Off), Heat only
To reset the combination code and unlock the keypad if
the code is forgotten, see troubleshooting section.
3) This control can be configured for:
MS 2 – Multi-Stage System (no heat pump)
HP 1 – Heat Pump with one stage of compressor
SS 1 – Single Stage System
4) GAS or Electric (ELE) fan operation. If the heating sys-
tem requires the thermostat to energize the fan, select
ELE. Select GAS if the heating system energizes the fan
on a call for heat.
5) Select Cool Savings™ value – Selects the amount
of adjustment for the Cool Savings™ feature in Cool
mode with 1 (1°) being the least amount of adjustment
and 6 (6°) being the most amount of adjustment. Default
value is 0 which disables this feature. Cool Savings is
an optional energy saving feature that can reduce your
cooling costs. It is based on the principal that lower
indoor humidity makes a slightly higher temperature
feel more comfortable. Cool Savings operates during
periods of high demand which normally occur on the
hottest summer days when a cooling system may run
for hours to reach the thermostat setting. Long cooling
run times also lower the indoor humidity. Cool Savings,
very slowly, adjusts the setpoint temperature to make the
setpoint closer to the displayed room temperature, to a
maximum of the number of degrees you select. Adjust-
ing the setpoint temperature over a long cooling run time
allows the system to reach your set temperature and turn
off. The room temperature will actually be higher than
the thermostat displays but the reduction in humidity will
allow comfort at the slightly higher temperature.
with Fan (Heat, Off, FAN Switch) Heat only without Fan
(Heat, Off) Auto only (Auto, Off) and Cool only (Cool,
Off).
13) Select Backlight Display – The display backlight im-
proves display contrast in low lighting conditions. When
the “C” terminal is powered, selecting backlight CdL ON
will keep the light on continuously. Select backlight OFF
will turn the light on momentarily after any key is pressed.
When the “C” terminal is not powered, the light will be on
momentarily after any key is pressed no matter whether
the backlight is selected ON or OFF.
14) Select Temperature Display Adjustment 4 LO to 4 HI
– Allows you to adjust the room temperature display up
to 4° higher or lower.Your thermostat was accurately cali-
brated at the factory, but you have the option to change
the display temperature to match your previous thermo-
stat. The current or adjusted room temperature will be
displayed.
15) Select F° or C° Readout – Changes the display readout
to Celsius or Fahrenheit as required.
To turn this feature on in the Cool mode press Cool
Savings. The display will show “Save” next to the
setpoint temperature. When Cool Savings is making ad-
justments to the room temperature display “Save” will be
flashing and the displayed room temperature may vary
within the adjustment range you selected.
If “Save” is not displayed and this feature is OFF, no
change will occur when the cooling system is continu-
ously running during periods of high demand.
16) Limited Heat Range – This feature provides a maximum
setpoint temperature for heat. The default setting is 90°F.
It can be changed between 62°F and 89°F by pressing
the
or
key.
17) Limited Cool Range – This feature provide a minimum
setpoint temperature for cool. The default setting is 45°F.
It can be changed between 46°F and 82°F by pressing
the
or
key.
18) Program Options: 1F85 only, configured for 5+1+1 day
or 5+2 day programming or non-programming mode. The
default setting is P3, indicating 5+1+1 day programming.
6) Energy Management Recovery: (this step is skipped if
configured to be non-programmable). Energy Manage-
5
INSTALLER/CONFIGURATION MENU
The programs per week can be changed to P2 or P0 by
in Troubleshooting section.) If a Comfort Alert module is
not connected, or to disable active protection, turn this
feature OFF. If a Comfort Alert module is connected and
this feature is turned OFF, the thermostat will still receive
and flash the fault codes from the Comfort Alert module,
but the active protection will not be enabled to protect the
compressor.
pressing the
or
keys. A selection of 0 Days for
non-programmable will eliminate the need for EMR, and
that step in the menu will be skipped.
19 & 20) Select Automatic Schedule – 1F85 only, with just
one touch of the Auto Schedule key this feature allows
you to program a desired comfort temperature into all the
24) Select Daylight Saving Time Calculation – 1F85 only,
this feature will allow the thermostat to calculate the DST
automatically and apply it to the Real Time Clock display.
program periods along with a 6° set back for night peri-
ods of both Heat and Cool programs. Factory default is
“On” for both. When Heat AS On and Cool AS On are
activated while in Heat or Cool mode, select desired
setpoint temperature and press Auto Schedule. This
value will be copied into all the morning, day and evening
program periods. The night program periods will have a
6°F set back.
Default On. Use
feature OFF.
or
touch keys to select the
25 & 26) Select Filter Replacement Reminder and Set
Run Time – Select the “Change Filter” reminder On
or OFF. If selected On, press MENU to select the time
period from 25 to 1975 hours in 25 hours increments.
In a typical system, 200 hours (default) of run time is
approximately 30 days. After the selected time of blower
operation, the thermostat will display “Change Filter”
as a reminder to change or clean your air filter. When
“Change Filter” is displayed, press MENU or RUN
SCHED button to clear the display and restart the time to
the next filter change.
21 & 22) Select Fast Second Stage ON or OFF – Heat
pump or Multi-stage only, in the run mode, with the fast
Heat feature enabled (FA Heat On), if the Heat setpoint
temperature is manually raised by 3°F (2°C) or more
above the actual temperature using
the second
stage will energize immediately. With FA OFF, second
stage will not energize until the setpoint temperature is
1°F or more above actual temperature for more than ten
minutes. The Fast Cool feature (FA Cool) provides the
same controls when the setpoint temperature is lowered.
27) Select Reversing Valve Output – The O/B option is
factory set at “O” position. This will accommodate the
majority of heat pump applications, which require the
23) Comfort Alert with Active Protection – Turn this
feature ON to enable active protection. This allows the
thermostat to identify fault codes sent by the Comfort
Alert module when compressor damage is possible and
react to those codes by turning the compressor off. Fault
codes from the Comfort Alert module will flash on the
thermostat. (Refer to Comfort Alert Yellow Alert Codes
changeover relay to be energized in COOL. If the
thermostat you are replacing or the heat pump being
installed with this thermostat requires a “B” terminal, to
energize the changeover relay in HEAT, the O/B option
should be set at “B” position.
OPERATINGYOUR THERMOSTAT
IMPORTANT!
Choose the Fan Setting (Auto or On)
Set the FAN Switch to Auto or On.
Fan Auto is the most commonly selected setting and runs the
fan only when the heating or cooling system is on.
Fan On runs the fan continuously for increased air circulation
or to allow additional air cleaning.
Manual Operation for Non-Programmable
Mode
Press the SYSTEM button to select Heat or Cool and use
the
or
buttons to adjust the temperature to your
desired setting. After selecting your desired settings you can
also press the SYSTEM button to select AUTO to allow the
thermostat to automatically change between Heat and Cool.
Choose the System Setting
(Heat, Off, Cool, Auto, Emer)
Press the SYSTEM button to select:
Manual Operation (Bypassing the Program)
Programmable Thermostats
Press
or
and then the HOLD button and adjust the
Heat: Thermostat controls only the heating system.
Off: Heating and Cooling systems are off.
temperature wherever you like. This will override the program.
The HOLD feature bypasses the program and allows you
to adjust the temperature manually, as needed. Whatever
temperature you set in HOLD will be maintained 24 hours
a day, until you manually change the temperature or press
RUN SCHED to cancel HOLD and resume the programmed
schedule.
Cool: Thermostat controls only the cooling system.
Auto: Auto Changeover is used in areas where both heating
and cooling may be required on the same day. AUTO allows
the thermostat to automatically select heating or cooling
depending on the indoor temperature and the selected heat
and cool temperatures. When using AUTO, be sure to set the
Cooling temperatures more than 1° Fahrenheit higher than
the heating temperature.
Program Override (Temporary Override)
Press
or
buttons to adjust the temperature. This
Emer: (Heat Pump models) Thermostat controls only backup
heating system.
will override the temperature setting for four hours. To cancel
the temporary setting at any time and return to the program,
press Run Sched. If the SYSTEM button is pressed to select
AUTO the thermostat will change to Heat or Cool, whichever
ran last. If it switches to heat but you want cool, or it changes
to cool but you want heat, press both
and
buttons
simultaneously to change to the other mode.
6
OPERATINGYOUR THERMOSTAT
IMPORTANT!
delay second stage for a longer time if you manually raise
the temperature or if the room temperature quickly changes.
Once the second stage comes on, it will come on sooner the
next time there is a difference between the setpoint and the
room temperature. The net effect of the staging program is
that when the first stage is capable of making temperature
the second stage will delay longer. When the thermostat
calculates that first stage cannot make temperature in a
reasonable time, the second stage will come on sooner. This
built in function automatically optimizes the use of additional
stages of heat or cool.
Second Stage Time Delay
Your thermostat is designed to determine the optimum time
to activate the second stage. Simply raising the temperature
in heating or lowering it in cooling will not always force the
thermostat to bring the second stage on quickly. There is a
time delay from 0-30 minutes depending on the performance
of the first stage of the system.
EXAMPLE: For the last 2 hours the thermostat is set on 70°
and the room temperature is 70° with the equipment using
only the first stage of heat. Since the equipment is keeping
the temperature within 1° of setpoint, the thermostat will
PROGRAMMING (For Programmable Model Only)
4) Press
or
key to change the temperature to your
Set Current Time and Date
selected temperature for the 1st heating period.
5) Press TIME button, time will flash.
6) Press
1st period.
7) The time will change in 15 minute increments.
8) After you have set the time and the temperature for
the period to begin, press SCHEDULE to advance to the
next program period.
9) Repeat steps 2 through 8 until all of the program times
and temperatures are set for all program periods on that
day.
1) Press MENU and then TIME button once. The display
will show the hour only.
or
key to adjust the start time for the
2) Press and hold either the
or
key until you reach
the correct hour and AM/PM designation (AM begins at
midnight, PM begins at noon).
3) Press TIME once again. The display window will show
the minutes only.
4) Press and hold either the
the correct minutes.
5) Additional presses of TIME will advance the display to
show the year, month and date of month. Press the
or
key until you reach
10) Press SCHEDULE to the next day and repeat steps 2
through 9.
or
key to change the display to the correct setting
for each.
11) When programming is complete and all of the times and
temperatures match your desired heating schedule, press
RUN SCHEDULE. The thermostat will now run your
program.
6) Press RUN SCHED to exit the TIME mode.
Enter the Heating Program
1) Press SYSTEM button to select “Heat” in the system
switch area indicating the active mode being pro-
grammed.
2) Press the MENU button and then press SCHEDULE.
3) The top of the display will show the day(s) being pro-
grammed. The time and temperature (flashing) are also
displayed. “1” will also be displayed to indicate the period.
Enter the Cooling Program
1) Press SYSTEM button to select “Cool” in the system
switch area indicating the active mode being pro-
grammed.
2) Follow Enter Heating Program instructions for entering
cooling times and temperatures.
Energy Saving Factory Pre-Program
The 1F85-0422 thermostats are programmed with the energy
saving settings shown in the table below for all days of the
week. If this program suits your needs, simply set the thermo-
stat clock and press the RUN SCHED button.
The table below shows the factory set heating and cooling
schedule for all days of the week.
Wake Up
(Period 1)
Leave For Work Return Home
(Period 2) (Period 3)
Go To Bed
(Period 4)
Heating
Program
6:00 AM 70°F 8:00 AM 62°F 5:00 PM 70°F 10:00 PM 62°F
6:00 AM 75°F 8:00 AM 83°F 5:00 PM 75°F 10:00 PM 78°F
Cooling
Program
7
PROGRAMMING
PlanningYour Program – Important
The Heating and Cooling Program schedules below allow you
to pencil in your own program times and temperatures.
The 1F85-0422 comes configured for 5+1+1 day program-
ming and can also be configured for 5+2 day programming
(see configuration section).
If you are re-programming a 5+1+1 fill in all lines with the
times and temperatures you want.
Keep the following guidelines in mind when planning your
program.
• In Heating, lower temperatures will save energy.
• In Cooling, higher temperatures will save energy.
• If you plan on using Auto Changeover, do not program
the heating higher than the cooling.
Factory settings are listed on Monday through Friday, Satur-
day and Sunday. If you are re-programming a 5+2 day sched-
ule, pencil in your own times and temperatures directly below
the factory times and temperatures.
Worksheet for Re-Programming 5+2 Day and 5+1+1 Day Program
Heating
Program
Wake Up
(Period 1)
Leave For Work Return Home
(Period 2) (Period 3)
Go To Bed
(Period 4)
6:00 AM 70°F 8:00 AM 62°F 5:00 PM 70°F 10:00 PM 62°F
6:00 AM 70°F 8:00 AM 62°F 5:00 PM 70°F 10:00 PM 62°F
6:00 AM 70°F 8:00 AM 62°F 5:00 PM 70°F 10:00 PM 62°F
Mon-Fri
Sat-Sun
or Sat
Sun
5+1+1 only
Cooling
Program
Wake Up
(Period 1)
Leave For Work Return Home
(Period 2) (Period 3)
Go To Bed
(Period 4)
6:00 AM 75°F 8:00 AM 83°F 5:00 PM 75°F 10:00 PM 78°F
6:00 AM 75°F 8:00 AM 83°F 5:00 PM 75°F 10:00 PM 78°F
6:00 AM 75°F 8:00 AM 83°F 5:00 PM 75°F 10:00 PM 78°F
Mon-Fri
Sat-Sun
or Sat
Sun
5+1+1 only
TROUBLESHOOTING
Comfort Alert Codes
Comfort AlertYellow Alert Codes
The Comfort Alert diagnostics product monitors the air
conditioning outdoor systems with single phase Copeland
Scroll compressors. Abnormal system and electrical
conditions are indicated by flashing ALERT codes on the
yellow LED on the Comfort Alert module. The flash codes are
transmitted to the thermostat by the Comfort Alert Thermostat
interface module. The Comfort Alert compatible thermostat
displays “Call For Service” that flashes at the same rate as
the yellow LED on the Comfort Alert module.
1 Flash
Long run time
System pressure trip
Short cycling
2 Flashs
3 Flashs
4 Flashs
5 Flashs
6 Flashs
7 Flashs
8 Flashs
9 Flashs
Locked rotor
Open circuit
Open start circuit
Open run circuit
Welded Contactor
Low voltage
8
TROUBLESHOOTING
Reset Operation
function correctly contact your heating/cooling service person
or place of purchase.
Note: Be sure to review the installer configuration menu
settings.
Note: When thermostat is reset, installer configuration menu
settings and programming will reset to factory settings.
If a voltage spike or static discharge blanks out the display
or causes erratic thermostat operation, you can reset the
thermostat by removing the wires from terminals R and C
(do not short them together) and removing batteries for 2
minutes. After resetting the thermostat, replace the wires and
batteries. If the thermostat has been reset and still does not
To reset the programming, clock and configuration settings,
press
and
and the FAN button simultaneously. The
thermostat should go blank and then all segments will be
displayed momentarily.
Symptom
Possible Cause
Correction Action
No Heat/No Cool/No Fan
(common problems)
1. Blown fuse or tripped circuit breaker.
2. Furnace power switch to OFF.
3. Furnace blower compartment door or
panel loose or not properly installed.
4. Loose connection to thermostat or
system.
Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage safety
interlock or door switch.
Tighten connections.
No Heat
1. Pilot light not lit.
Re-light pilot.
2. Furnace Lock-Out Condition. Heat
may also be intermittent.
Many furnaces have safety devices that shut down when
a lock-out condition occurs. If the heat works intermittently
contact the furnace manufacturer or local HVAC service
person for assistance.
3. Heating system requires service or
thermostat requires replacement.
Diagnostic: Set SYSTEM Switch to HEAT and raise the
setpoint above room temperature. Within a few seconds
the thermostat should make a soft click sound. This sound
usually indicates the thermostat is operating properly. If
the thermostat does not click, try the reset operation listed
above. If the thermostat does not click after being reset
contact your heating and cooling service person or place
of purchase for a replacement. If the thermostat clicks,
contact the furnace manufacturer or a HVAC service
person to verify the heating is operating correctly.
No Cool
1. Cooling system requires service or
thermostat requires replacement.
Same as diagnostic for No Heat condition except set the
thermostat to COOL and lower the setpoint below the room
temperature. There may be up to a five minute delay before
the thermostat clicks in Cooling.
1. Possible short in wiring.
2. Possible short in thermostat.
Check each wire connection to verify they are not shorted
or touching together. No bare wire should stick out from
Heat, Cool or Fan
Runs Constantly
3. Possible short in heat/cool/fan system. under terminal block. Try resetting the thermostat as
4. FAN Switch set to Fan ON.
described above. If the condition persists the manufacturer
of your system or service person can instruct you on how
to test the Heat/Cool system for correct operation. If the
system operates correctly, replace the thermostat.
Thermostat Setting &
Thermostat Thermometer
Disagree
1. Thermostat thermometer setting
requires adjustment.
The thermometer can be adjusted +/- 4 degrees. See
Temperature Display Adjustment in the Configuration Menu
section.
Furnace (Air Conditioner)
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.
Digital thermostats provide precise control and cycle faster
than older mechanical models. The system turns on and off
more frequently but runs for a shorter time so there is no
increase in energy use. If you would like an increased cycle
time, choose SL for slow cycle in the Configuration menu,
step 6 (heat), 7 (cool) or 8 (heat pump). If an acceptable
cycle rate is not achieved, contact a local HVAC service
person for additional suggestions.
Forgot Keypad Lockout
Code
Hold MENU key for 20 seconds and the lockout will reset.
Thermostat does not have
Menu Screen Numbers
1. Earlier version of thermostat.
Refer to Instruction Sheet 37-7136A.
9
NOTES
10
NOTES
11
HOMEOWNER HELP LINE: 1-800-284-2925
White-Rodgers is a business
of Emerson Electric Co.
The Emerson logo is a
trademark and service mark
of Emerson Electric Co.
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