White Rodgers 1F85-275 User Manual

1F85-2751F85-275

1F85-275

1F85-2751F85-275

Heating & Air Conditioning

5-1-1 Programmable/Non-programmable, Auto

Changeover, Multi-Stage/Heat Pump Thermostat

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONS

INSTALLATION INSTRUCTIONSINSTALLATION INSTRUCTIONS

OperOper

Oper

OperOper

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE­FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-

FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-

FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER­SONAL INJURY AND/OR PROPERTY DAMAGE.SONAL INJURY AND/OR PROPERTY DAMAGE.

SONAL INJURY AND/OR PROPERTY DAMAGE.

SONAL INJURY AND/OR PROPERTY DAMAGE.SONAL INJURY AND/OR PROPERTY DAMAGE.

YOUR THERMOSTAT REPLACESYOUR THERMOSTAT REPLACES

YOUR THERMOSTAT REPLACES

YOUR THERMOSTAT REPLACESYOUR THERMOSTAT REPLACES

DescriptionDescription

Description

DescriptionDescription

Heat Pump (No Aux. or Emergency Heat) Yes

Heat Pump (with Aux. or Emergency Heat) Yes

Standard Heat & Cooling Systems Yes

Two Stage Heat & Two Stage Cool Yes

Standard Heat Only Systems Yes

Millivolt Heat Only Systems – Floor or Wall Furnaces Yes

Standard Central Air Conditioning Yes

Gas or Oil Heat Yes

Electric Furnace Yes

Hydronic (Hot Water) Zone Heat – 2 Wires Yes

Hydronic (Hot Water) Zone Heat – 3 Wires No

!

To prevent electrical shock and/or equipment damage,To prevent electrical shock and/or equipment damage,

To prevent electrical shock and/or equipment damage,

To prevent electrical shock and/or equipment damage,To prevent electrical shock and/or equipment damage,
disconnect electric power to system at main fuse ordisconnect electric power to system at main fuse or

disconnect electric power to system at main fuse or

disconnect electric power to system at main fuse ordisconnect electric power to system at main fuse or
circuit breaker box until installation is complete.circuit breaker box until installation is complete.

circuit breaker box until installation is complete.

circuit breaker box until installation is complete.circuit breaker box until installation is complete.

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CAUTION

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1F85-2751F85-275

1F85-275

1F85-2751F85-275

uctions fuctions f

uctions f

uctions fuctions f

Assemble tools required as shown below.

HAND OR POWER
DRILL WITH 3/16 INCH
DRILL BIT, IF NEEDED

REMOREMO

REMO

REMOREMO

or futuror futur

or futur

or futuror futur

FLAT BLADE SCREWDRIVER

VING OLD VING OLD

VING OLD

VING OLD VING OLD

e use!e use!

e use!

e use!e use!

PREPPREP

PREP

PREPPREP

ARAARA

TIONSTIONS

ARA

TIONS

ARAARA

TIONSTIONS

WIRE CUTTER/STRIPPER

THERMOSTTHERMOST

THERMOST

THERMOSTTHERMOST

AA

A

AA

TT

T

TT

Before removing wires from old thermostat's switching sub-

label each wirelabel each wire

base,

label each wire with the terminal designation it was

label each wirelabel each wire

removed from.

1. Shut off electricity at the main fuse box until installation is
complete. Ensure that electrical power is disconnected.

Remove Old ThermostatRemove Old Thermostat

2.

Remove Old Thermostat: A standard heat/cool

Remove Old ThermostatRemove Old Thermostat
thermostat consists of three basic parts:
a. The cover, which may be either a snap-on or

hinge type.

b. The base, which is removed by loosening all

captive screws.

c. The switching subbase, which is removed by

unscrewing the mounting screws that hold it on
the wall or adaptor plate.

3. Remove the front cover of the old thermostat.
wireswires

still attachedstill attached

wires

still attached, remove wall plate from the wall. If

wireswires

still attachedstill attached
the old thermostat has a wall mounting plate, remove the
thermostat and the wall mounting plate as an assembly.

4. Identify each wire attached to the old thermostat.

5. Disconnect the wires from the old thermostat one at a
DO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THE

time.

DO NOT LET WIRES FALL BACK INTO THE

DO NOT LET WIRES FALL BACK INTO THEDO NOT LET WIRES FALL BACK INTO THE

WALLWALL

WALL.

WALLWALL

6. Install new thermostat using the following procedures.

WithWith

With

WithWith

Y2

C

R

E/W1

Y1

Mounting
Hole

Figure 1 – Thermostat baseFigure 1 – Thermostat base

Figure 1 – Thermostat base

Figure 1 – Thermostat baseFigure 1 – Thermostat base

ATTENTION!ATTENTION!

ATTENTION! This product does not contain mercury. How-

ATTENTION!ATTENTION!
ever, this product may replace a unit which contains mercury.

Do not open mercury cells. If a cell becomes damaged, do
touch any spilled mercury. Wearing non-absorbent gloves,
clean up the spilled mercury and place into a container which
can be sealed. If a cell becomes damaged, the unit should be
discarded.

Mercury must not be discarded in household trash. When the
unit this product is replacing is to be discarded, place in a
suitable container. Refer to www.white-rodgers.com for loca­tion to send the product containing mercury.

OBLW2G

ELEC. GAS

AUTOON

Mounting
Hole

Elec-Gas
Switch

notnot

not

notnot

White-Rodgers is a division

of Emerson Electric Co.

www.white-rodgers.com

PART NO. 37-6488CPART NO. 37-6488C

PART NO. 37-6488C

PART NO. 37-6488CPART NO. 37-6488C

Replaces 37-6488B

0838

MOUNTING AND WIRINGMOUNTING AND WIRING

MOUNTING AND WIRING

MOUNTING AND WIRINGMOUNTING AND WIRING

WARNING

!

Do not use on circuits exceeding specified voltage.Do not use on circuits exceeding specified voltage.

Do not use on circuits exceeding specified voltage.

Do not use on circuits exceeding specified voltage.Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could causeHigher voltage will damage control and could cause

Higher voltage will damage control and could cause

Higher voltage will damage control and could causeHigher voltage will damage control and could cause
shock or fire hazard.shock or fire hazard.

shock or fire hazard.

shock or fire hazard.shock or fire hazard.

Do not short out terminals on gas valve or primaryDo not short out terminals on gas valve or primary

Do not short out terminals on gas valve or primary

Do not short out terminals on gas valve or primaryDo not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will damagecontrol to test. Short or incorrect wiring will damage

control to test. Short or incorrect wiring will damage

control to test. Short or incorrect wiring will damagecontrol to test. Short or incorrect wiring will damage
thermostat and could cause personal injury and/orthermostat and could cause personal injury and/or

thermostat and could cause personal injury and/or

thermostat and could cause personal injury and/orthermostat and could cause personal injury and/or
property damage.property damage.

property damage.

property damage.property damage.

Thermostat installation and all components of the
system shall conform to Class II circuits per the NEC
code.

Electric/Gas Switch (Fan Option)Electric/Gas Switch (Fan Option)

Electric/Gas Switch (Fan Option)

Electric/Gas Switch (Fan Option)Electric/Gas Switch (Fan Option)

This thermostat is configured from the factory to operate a heat/
cool, fossil fuel (gas, oil, etc.), forced air system. It is configured
correctly for any system that DOES NOT require the thermostat
to energize the fan on a call for heat. If you system is an electric
heat or heat-pump system that REQUIRES the thermostat to
turn on the fan on a call for heat, locate the ELEC/GAS switch
on the back of the thermostat (see fig. 1) and switch it to the
ELEC position. This will allow the thermostat to energize the fan
immediately on a call for heat. If you are unsure if the heating/
cooling system requires the thermostat to control the fan,
contact a qualified heating and air conditioning service person.

When the thermostat is configured for Heat Pump, the thermo­stat will always power the circulator fan on a call for heat in the
HEAT mode. The ELEC/GAS switch must be set to match the
type of Auxiliary heat your system uses for proper operation in
the EMERgency mode.

All wiring diagrams are for typical systems only. Refer to
equipment manufacturers’ instructions for specific system wir­ing information.

CAUTION

!

Take care when securing and routing wires so they doTake care when securing and routing wires so they do

Take care when securing and routing wires so they do

Take care when securing and routing wires so they doTake care when securing and routing wires so they do
not short to adjacent terminals or rear of thermostat.not short to adjacent terminals or rear of thermostat.

not short to adjacent terminals or rear of thermostat.

not short to adjacent terminals or rear of thermostat.not short to adjacent terminals or rear of thermostat.
Personal injury and/or property damage may occur.Personal injury and/or property damage may occur.

Personal injury and/or property damage may occur.

Personal injury and/or property damage may occur.Personal injury and/or property damage may occur.

Attach Thermostat Base to Wall

1. Remove the packing material from the thermostat. Gently
pull the cover straight off the base. Forcing or prying on
the thermostat will cause damage to the unit.

2. Connect wires beneath terminal screws on base using
appropriate wiring schematic (see figs. 2 through 3).

3. Place base over hole in wall and mark mounting hole
locations on wall using base as a template.

4. Move base out of the way. Drill mounting holes.

5. Fasten base loosely to wall, as shown in fig. 1, using two
mounting screws. Place a level against bottom of base,
adjust until level, and then tighten screws. (Leveling is for
appearance only and will not affect thermostat operation.)
If you are using existing mounting holes, or if holes drilled
are too large and do not allow you to tighten base snugly,
use plastic screw anchors to secure subbase.

6. Push excess wire into wall and plug hole with a fire­resistant material (such as fiberglass insulation) to
prevent drafts from affecting thermostat operation.

Battery Location

2 “AA” alkaline batteries are included in the thermostat at the
factory with a battery tag to prevent power drainage. You
must remove the battery tag to engage the batteries.

If “BATT” is displayed, the batteries are low and should be
replaced. For best results, replace all batteries with new
premium brand alkaline batteries such as Duracell® or
Energizer®. To replace batteries, press system button to
OFF, install the batteries along the top of the base (see Fig.

1). The batteries must be installed with the positive (+) end to

the left.

2

Heat Pump ConnectionsHeat Pump Connections

Heat Pump Connections

Heat Pump ConnectionsHeat Pump Connections

WIRING DIAWIRING DIA

WIRING DIA

WIRING DIAWIRING DIA

GRAMSGRAMS

GRAMS

GRAMSGRAMS

Refer to equipment manufacturers' instructions for specific system wiring information. The thermostat can be configured for use
with the following heat pump systems:

HEAT PUMP TYPE 1 (HP 1). Single Stage compressor system; gas or electric backup, 2-heat/1-cool stages maximum.

HEAT PUMP TYPE 2 (HP 2). Multi-Stage compressor or two compressor system with gas or electric backup, 3-heat/2-cool stages

maximum.

See figure 2 below to help you wire the thermostat properly. After wiring, see CONFIGURATION section for proper thermostat
configuration.

L

W2

Heat Mode
2nd Stage.
Emergency
Mode 2nd
Stage

Heat Mode
3rd Stage.
Emergency
Mode 2nd
Stage

G

Blower/
Circulator
Fan Energized
on Call for
Heat or Cool.
Set Elect/Gas
Switch for
Emergency
Mode

Y1

Heat and
Cool Mode
1st Stage
(Compressor)

E/W1

Emergency
Mode
1st Stage

R

24 Volt
(Hot)

C*

24 Volt
(Common)

Y2

No Output

2nd Stage
(Compressor)

NEUTRAL

24VAC

HOT

NOTE: If your system

does not provide an E
connection, jumper W2 to
E/W1 to use the Auxiliary

Heat in the Emergency

Mode.

120VAC

CLASS II

TRANSFORMER

System

Heat Pump 1

(HP1)

Heat Pump 2

(HP2)

O

Energized in
Cool Mode

B

Energized in
Heat, Off,
Emergency
Mode

Fault
Indicator
or
System
Malfunc­tion
Switch

Figure 2 – Heat Pump Systems

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

Single Stage/Multi-Stage ConnectionsSingle Stage/Multi-Stage Connections

Single Stage/Multi-Stage Connections

Single Stage/Multi-Stage ConnectionsSingle Stage/Multi-Stage Connections

(No Heat Pump)(No Heat Pump)

(No Heat Pump)

(No Heat Pump)(No Heat Pump)

Refer to equipment manufacturers' instructions for specific system wiring information. The thermostat can be configured for use
with the following Single Stage and Multi-Stage systems:

SINGLE STAGE (SS 1). Gas, oil or electric, 1-heat/1-cool stage maximum.

MULTI-STAGE (MS 2). Gas, oil or electric, 2-heat/2-cool stages maximum.

See figure 3 below to help you wire the thermostat properly. After wiring, see CONFIGURATION section for proper thermostat
configuration.

L

W2

No Output

Heat Mode
2nd Stage

G

Blower/
Circulator
Fan Energized
on Call for
Cool (and
Heat) if
configured
for Electric
Heat

Y1

Cool Mode
1st Stage

E/W1

Heat
Mode
1st Stage

R

24 Volt
(Hot)

C*

24 Volt
(Common)

Y2

No Output

Cool Mode
2nd Stage

NEUTRAL

24VAC

HOT

CLASS II

TRANSFORMER

120VAC

System

Single
Stage 1

(SS1)

Multi­Stage 2

(MS2)

O

Energized
Constantly
in
Cool Mode

B

Energized
Constantly
in
Heat, Off,
Emergency
Mode

Fault
Indicator
(NOT
USED)

Figure 3 – Single Stage or Multi-Stage System (No Heat Pump)

*The 24 volt neutral connection to terminal C on the thermostat is not required if you replace the batteries once a year with fresh “AA” alkaline batteries.

3

CHECK CHECK

CHECK

CHECK CHECK

THERMOSTTHERMOST

THERMOST

THERMOSTTHERMOST

AA

T OPERAT OPERA

A

T OPERA

AA

T OPERAT OPERA

TIONTION

TION

TIONTION

NOTE

To prevent static discharge problems, touch side ofTo prevent static discharge problems, touch side of

To prevent static discharge problems, touch side of

To prevent static discharge problems, touch side ofTo prevent static discharge problems, touch side of
thermostat to release static build-up before touchingthermostat to release static build-up before touching

thermostat to release static build-up before touching

thermostat to release static build-up before touchingthermostat to release static build-up before touching
any keys.any keys.

any keys.

any keys.any keys.

If at any time during testing your system does not operate
properly, contact a qualified serviceperson.

Fan Operation

If your system does not have a G terminal connection, skip to
Heating System.

1. Turn on power to system.

2. Move FAN switch to ON position. The blower should be ­gin to operate.

3. Move FAN switch to AUTO position. The blower should
stop immediately.

CAUTION

!

Do not allow the compressor to run unless the com-Do not allow the compressor to run unless the com-

Do not allow the compressor to run unless the com-

Do not allow the compressor to run unless the com-Do not allow the compressor to run unless the com­pressor oil heaters have been operational for 6 hourspressor oil heaters have been operational for 6 hours

pressor oil heaters have been operational for 6 hours

pressor oil heaters have been operational for 6 hourspressor oil heaters have been operational for 6 hours
and the system has not been operational for at least 5and the system has not been operational for at least 5

and the system has not been operational for at least 5

and the system has not been operational for at least 5and the system has not been operational for at least 5
minutes.minutes.

minutes.

minutes.minutes.

Heating System

1. Press SYSTEM button to select the Flame icon ( ). If
the auxiliary heating system has a standing pilot, be sure
to light it.

2. Press
temperature. The heating system should begin to
operate. The display should show “STG1”. However, if
the setpoint temperature display is flashing, the compres­sor lockout feature is operating (see Configuration menu,
item 5).

3. Adjust temperature setting to 3° above room temperature.
If your system configuration is set at MS2, HP2 or HP1,
the auxiliary heat system should begin to operate and the
display should show “STG1+2”.

4. Press
ture. The heating system should stop operating.

to adjust thermostat setting to 1° above room

to adjust the thermostat below room tempera-

Emergency System

EMER bypasses the Heat Pump to use the heat source wired
to terminal E on the thermostat. EMER is typically used when
compressor operation is not desired, or you prefer back-up
heat only.

1. Press SYSTEM button to select EMER. “EMER” will flash
on the display.

2. Press
temperature. The Aux. heating system will begin to
operate. The display will show “STG1” flashing “EMER”

and Flame icon (
operating.

3. Adjust temperature setting to 3° above room temperature.
The auxiliary heat system should begin to operate and
the display should show “STG1+2”.

4. Press
ture. The Aux. heating system should stop operating.

To prevent compressor and/or property damage, if theTo prevent compressor and/or property damage, if the

To prevent compressor and/or property damage, if the

To prevent compressor and/or property damage, if theTo prevent compressor and/or property damage, if the
outdoor temperature is below 50°F, DO NOT operateoutdoor temperature is below 50°F, DO NOT operate

outdoor temperature is below 50°F, DO NOT operate

outdoor temperature is below 50°F, DO NOT operateoutdoor temperature is below 50°F, DO NOT operate
the cooling system.the cooling system.

the cooling system.

the cooling system.the cooling system.

to adjust thermostat setting above room

) to indicate that the Aux. system is

to adjust the thermostat below room tempera-

CAUTION

!

Cooling System

1. Press SYSTEM button to select the Snowflake icon ( ).

2. Press
temperature. The blower should come on immediately on
high speed, followed by cold air circulation. The display
should show “STG1”.

3. Adjust temperature setting to 3° below room temperature.
The second stage cooling should begin to operate and
the display should show “STG1+2”.

4. Press
temperature. The cooling system should stop operating.

to adjust thermostat setting below room

to adjust the temperature setting above room

4

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. 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.

The Thermostat Buttons and Switches

Raises temperature setting

1

Lowers temperature setting.

2

TIME button.

3

PRGM (program) button.

4

RUN (run program) button.

5

HOLD temperature button.

6

FAN switch (ON, AUTO)

7

SYSTEM button (COOL, AUTO, HEAT, EMER, OFF)

8

OPERAOPERA

OPERA

OPERAOPERA

TIONTION

TION

TIONTION

The Display

Indicates day of the week.

9

Flame icon ( ) is displayed when the system is in

10

HEAT mode. Snowflake icon (

the system is in COOL mode. Flame icon ( ) and
Snowflake icon (
when thermostat is in AUTO mode.

Displays “BATT” when the 2 "AA" batteries are low

11

and should be replaced. Only “BATT” and “LO” in the
minutes field are displayed when batteries are low and
with no system power.

Alternately displays current time and temperature. Dis-

12

plays “LO” in the minutes field when batteries are low.

The word “HOLD” is displayed when the thermostat is

13

in the HOLD mode. “HOLD” is displayed flashing

when the thermostat is in a temporary HOLD mode.

Displays currently programmed set temperature (this

14

is blank when SYSTEM is OFF).

Displays “FLTR” when the system has run for the

15

programmed filter time period as a reminder to change
or clean your filter.

The configuration menu allows you to set certain thermostat
operating characteristics to your system or personal require­ments.

Set SYSTEM button to OFF, then simultaneously press

and to enter configuration menu. The display will

show the first item in the configuration menu.

The configuration menu table summarizes the configuration
options. An explanation of each option follows.

Press SYSTEM to change to the next menu item. To exit the
menu and return to the program operation, press RUN. If no
keys are pressed within fifteen minutes, the thermostat will
revert to normal operation.

) are displayed simultaneously

) is displayed when

Figure 4 – Thermostat display, buttons and switchesFigure 4 – Thermostat display, buttons and switches

Figure 4 – Thermostat display, buttons and switches

Figure 4 – Thermostat display, buttons and switchesFigure 4 – Thermostat display, buttons and switches

Display ( ) when in keypad lockout mode.

16

“EMER” is displayed flashing when the system is in

17

EMER mode.

The word “FAULT” will be displayed when there is a

18

malfunction in the HEAT/COOL system.

Display ( ) when limited HEAT/COOL range is activated.

19

The “

” icon will flash if an attempt is made to adjust
the temperature beyond the limited HEAT/COOL
temperature range.

Stage1 & 2 indicators: The thermostat shall indicate

20

when the first and second stage is energized except
in emergency mode. The icon is “STG 1” for the first
stage energized. The icons for the first and second
stage energized are “STG1+2” located in the upper
right side of the display.

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

1) Single Stage, Multi-Stage or Heat Pump System
Configuration – This control can be configured for Heat

Pump or two stage heat/two stage cool Multi-Stage opera­tion. The display indicates “MS 2” (default for Multi-Stage
mode) in the display. The Multi-Stage configuration can
changed to “SS1”, “HP2”, or “HP1” by pressing the

key. In Multi-Stage configuration, SYSTEM button will

not have EMERgency mode.

TION MENUTION MENU

TION MENU

TION MENUTION MENU

or

2) Programmable Periods – This control can be configured

for 4, 2 or 0 programmable periods. The display indicates
“PRG 4” in the display as default. The programmable
periods can be toggled to 2 or 0 by pressing the or
keys. With "PRG 0" selected for non-programmable, sys-

5

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

TION MENUTION MENU

TION MENU

TION MENUTION MENU

Press the SYSTEM button until OFF is displayed, then press the and simultaneously

INSTALLER/CONFIGURATION MENU

Press Displayed Press or

Step Button(s) (Factory Default) to select Comments

1 System MS 2 SS1, HP2, HP1 Selects Single Stage, Multi-Stage, or Heat Pump

(Single Stage or 2-stage) System Configuration

2 System PRG 4 PRG 0, PRG 2 Selects Programmable Periods

3 System 4:00 HOLD 0:15 to 8:00 Selects Temporary Program Override Time

(increments of 15 minutes)

4 System EMR OFF Selects Energy Management Recovery OFF or ON

(ON)

5 System FA SL Selects Fast or Slow Cycle Selection

6 System CL CL Selects Compressor Lockout CL OFF or ON

(OFF) (ON)

7 System CDL CDL Selects Backlight Display

(ON) (OFF)

8 System FA FA Selects Fast Second Stage ON or OFF

(ON) (OFF) (Not available if SS1 is selected above)

9 System 0 FLTR 50-1950 (increments of 50) Selects filter replacement run time

10 System 0°F 4 LO to 4 HI Selects Temperature Display Adjustment 4 LO to 4 HI

(Room Temperature)

11 System °F °C Selects temperature display F° or °C selection

12 System AU On OFF Selects AUTO Mode ON or OFF

13 System LR LR 62 to LR89 Selects Limited HEAT range

(90)

14 System LR LR 46 to LR 82 Selects Limited COOL range

(45)

15 System (ON) Selects Keypad Lockout

(OFF)

16 System 000 001 to 999 Selects Keypad lockout combination number

Press System to set code

17 Run Returns to the OFF position

tem key selection will skip EMR (item 4) and temporary
program override (item 3).

3) Select Temporary Program Override Time – The thermo-
stat can hold any temperature you set it to for the amount
of time you select on this option. Your choices are 0:15 to
8:00 hours in 15 minute increments.

Example:

a. You have selected 3:00 hours for the Temporary Pro-

gram Override time period.

b. With the thermostat set to Heat or Cool, press

to set the temperature to your preference.
The thermostat will maintain this temperature setting
for 3 hours with “HOLD” blinking to remind you it is
in Temporary Hold. After 3 hours, the thermostat will

or

go back to the program temperature and “HOLD” will
no longer blink or display.

4) Select Energy Management Recovery OFF or ON –
Energy Management Recovery (EMR) causes the thermo­stat to start heating or cooling early to make the building
temperature reach the program setpoint at the time you
specify. Heating will start 5 minutes early for every 1°
of temperature required to reach setpoint. Cooling allows
more time per degree because it takes longer to reach
temperature.

Example: You select EMR and have your heating program­med to 65° at night and 70° at 7 AM. If the building temp­erature is 65° the difference between 65° and 70° is 5°.
Allowing 5 minutes per degree the thermostat setpoint will
change to 70° at 6:35 AM.

6

CONFIGURACONFIGURA

CONFIGURA

CONFIGURACONFIGURA

TION MENUTION MENU

TION MENU

TION MENUTION MENU

5) Fast or Slow Cycle Selection – The factory default setting
is fast cycle, which cycles 1st stage at approximately 1.2°F
and 2nd stage 0.75°F. If you prefer slow cycle, press the

or key to change to SL. The 1st stage and 2nd

stage would be 1.5°F and 1.2°F respectively.

6) Select Compressor Lockout CL OFF or ON – Selecting
CL ON will cause the thermostat to wait 5 minutes before
turning on the compressor if the heating and cooling system
loses power. It will also wait 5 minutes minimum between
cooling and heating 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 lockout feature is already present in their system. When
the thermostat compressor time delay occurs it will flash the
setpoint for about five minutes.

7) Select Backlight Display – The display backlight improves
display contrast in low lighting conditions. When the C
terminal is powered, selecting backlight CdL ON will turn the
light on continuously. Select backlight OFF will keep the light
on momentarily after any key is pressed. When the C
terminal is not powered, this selection has no effect.

8) Select (Fast) Second Stage ON or OFF (not available in
Single Stage configuration) – In the run mode,
if the setpoint temperature is manually raised by 3°F (2°C)
or more above the actual temperature with the
fast second stage feature is enabled, FA ON, 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.

9) Select filter replacement run time – The thermostat will
display FLTR after a set time of operation. This is a remind-
er to change or clean your air filter. This time can be set from
0 to 1950 hours in 50 hour increments. A selection of 000
will cancel this feature. When “FLTR” is displayed, you
can clear it by pressing HOLD and RUN at the same time.
This resets the timer and starts counting the hours until the
next filter change. Contact your system manufacturer for a
specific replacement/maintenance interval.

10)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
left side of the display.

, and the

11)Select F° or C° Readout – Changes the display readout
to Centigrade or Fahrenheit as required.

12)Selected Auto mode – This control will feature AUTO
changeover mode when AU on is selected (default). Press

or keys in the menu mode to defeat the auto

the
changeover mode (OFF).

13)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.

14)Limited Cool Range – This feature provides 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.

15 & 16) Keypad Lockout – This menu selection will display

lock icon (
The and are used to toggle the selection between OFF
and ON (keypad locked out). When the keypad lockout
selection is enabled (ON), and the SYSTEM 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 SYSTEM button is
pressed, the menu will be exited and keypad will not be
locked. If 1 to 999 is selected and the SYSTEM button is
pressed, the combination is stored into memory and the
menu is exited. The ( ) will display designating 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.

While the keypad is locked out, a simultaneous press of

and will enter the configuration menu from any
mode instead of only OFF mode. When the menu is
entered with the keypad lockout feature enabled, the first

menu item displayed is the combination code 0. The or

keys are used to set the combination unlock number
from 0 to 999. If the unlock number matches exactly with
the combination lock number stored in memory when the
SYSTEM button is pressed, the keypad is unlocked and
the ( ) is removed. If the unlock number does not match
when the SYSTEM button is pressed, the menu is exited
and the keypad remains disabled.

To reset the combination code and unlock the keypad if
the code is forgotten, see troubleshooting section.

) and “OFF” (default, keypad not locked out).

SPECIFICASPECIFICA

SPECIFICA

SPECIFICASPECIFICA

ELECTRICAL DATAELECTRICAL DATA

ELECTRICAL DATA

ELECTRICAL DATAELECTRICAL DATA

Electrical RatingElectrical Rating

Electrical Rating:

Electrical RatingElectrical Rating

Mv to 30 VAC 50/60 Hz or DC

0.05 to 1.5 Amps (Load per terminal)

2.5 Amps Maximum Total Load (All terminals combined)

TIONSTIONS

TIONS

TIONSTIONS

THERMAL DATATHERMAL DATA

THERMAL DATA

THERMAL DATATHERMAL DATA

Setpoint Temperature RangeSetpoint Temperature Range

Setpoint Temperature Range:

Setpoint Temperature RangeSetpoint Temperature Range

45°F to 90°F (7°C to 32°C)

Operating Ambient Temperature RangeOperating Ambient Temperature Range

Operating Ambient Temperature Range:

Operating Ambient Temperature RangeOperating Ambient Temperature Range

32°F to 105°F

Operating Humidity RangeOperating Humidity Range

Operating Humidity Range:

Operating Humidity RangeOperating Humidity Range

0 to 90% RH (non-condensing)

Shipping Temperature RangeShipping Temperature Range

Shipping Temperature Range:

Shipping Temperature RangeShipping Temperature Range

-40°F to 150°F

7

OPERAOPERA

OPERA

OPERAOPERA

The system "mode" is selected by pressing the SYSTEM
button. Icons on the bottom right corner of the display will
indicate the mode:

OFFOFF

or

OFF. In any mode except

OFFOFF
be shown on the right side of the display. In
be blank. The current temperature will be displayed on the left
side of the display.

To operate properly in the
temperature cannot be the same as or higher than the cool
setpoint temperature. The heat setpoint must be at least 1°
lower than the cool setpoint.

When the thermostat is in the
Snowflake Snowflake

Snowflake icons are displayed. The thermostat will call for heat

Snowflake Snowflake
or cool depending on the room temperature. The setpoint
temperature displayed will be that of the last mode called. If the
last system cycle was heat, the
If the room temperature raises above the
COOL COOL

COOL setpoint and a call for cool is required, the temperature

COOL COOL
displayed will change to be the

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 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.

Permanent Program OverridePermanent Program Override

Permanent Program Override (

Permanent Program OverridePermanent Program Override
button set to
release.
temperature. The thermostat will hold the room temperature at
the selected setting until you press RUN button to start program
operation again.

Temperature Program OverrideTemperature Program Override

Temperature Program Override – Press

Temperature Program OverrideTemperature Program Override
display shows the temperature you want. The thermostat will
override current programming and keep the room temperature
at the selected temperature for a programmed time period.
“HOLD”“HOLD”

“HOLD” will be displayed and flashing. The thermostat will

“HOLD”“HOLD”
automatically revert to the program after programmed period.

TIONTION

TION

TIONTION

COOL COOL

COOL (

COOL COOL

Automatic System ChangeoverAutomatic System Changeover

Automatic System Changeover

Automatic System ChangeoverAutomatic System Changeover

Second Stage Time DelaySecond Stage Time Delay

Second Stage Time Delay

Second Stage Time DelaySecond Stage Time Delay

Manual OperationManual Operation

Manual Operation

Manual OperationManual Operation

HEAT HEAT

HEAT or

HEAT HEAT

“HOLD” “HOLD”

“HOLD” will be displayed. Use

“HOLD” “HOLD”

COOLCOOL

COOL, press the HOLD button once and

COOLCOOL

AUTO AUTO

),

AUTO ( ),

AUTO AUTO

OFFOFF

OFF, the setpoint temperature will

OFFOFF

AUTO AUTO

AUTO mode, the heat setpoint

AUTO AUTO

AUTO AUTO

AUTO mode, both the

AUTO AUTO

HEAT HEAT

HEAT setpoint will be displayed.

HEAT HEAT

COOL COOL

COOL setpoint.

COOL COOL

HOLDHOLD

HOLD) – With the SYSTEM

HOLDHOLD

HEAT HEAT

HEAT ( ),

HEAT HEAT

OFFOFF

OFF, this area will

OFFOFF

HEAT HEAT

HEAT setpoint and the

HEAT HEAT

or to adjust the

or until the

EMEREMER

EMER,

EMEREMER

Flame Flame

Flame and

Flame Flame

LOW BATTERY INDICATORLOW BATTERY INDICATOR

•

LOW BATTERY INDICATOR — If the 2 “AA” alkaline batter-

LOW BATTERY INDICATORLOW BATTERY INDICATOR
ies are low and should be replaced, the display will be blank
except for “
every 2 years. If the home is going to be unoccupied for an
extended period (over 3 months), the batteries should be
replaced before leaving. When the batteries are low, pressing
any button will cause the display to operated for ten seconds.
After ten seconds, the display will be blank except for “
BATTBATT

BATT”. You cannot program with low batteries, but you can

BATTBATT
override setpoint temperature. After “
displayed for 4 weeks, the thermostat will raise the tempera­ture 10 degrees above your setpoint in COOL mode and will
drop the temperature 10 degrees below your setpoint in
HEAT mode. If the “
when it reaches certain value, the thermostat will turn off all
the loads and “

SIMPLIFIED COPY DAY FUNCTIONSIMPLIFIED COPY DAY FUNCTION

•

SIMPLIFIED COPY DAY FUNCTION — This feature allows

SIMPLIFIED COPY DAY FUNCTIONSIMPLIFIED COPY DAY FUNCTION
Monday’s program to be copied into the rest of the week’s
programming.
programmed your thermostat.programmed your thermostat.

programmed your thermostat. To use this feature, simply

programmed your thermostat.programmed your thermostat.
enter the program for Monday as described in ENTERING
YOUR PROGRAM, then press RUN or HOLD. The only way
to restore this feature is to complete a software reset (see
Reset Operation under TROUBLESHOOTING section).

COPY DAY FUNCTIONCOPY DAY FUNCTION

•

COPY DAY FUNCTION — This feature allows

COPY DAY FUNCTIONCOPY DAY FUNCTION
a selected day’s program to be copied to the desired day’s
programming. To use this feature: in PRGM mode, select the
day to be copied
program for the selected day as described in ENTERING
YOUR PROGRAM. Press and hold the TIME button for 4
seconds to begin the COPY mode. The LCD will display
“COPY”“COPY”

“COPY” and the selected day to be copied. The day the

“COPY”“COPY”
program will copy
to select the day you want to copy
the Copy Day operation and return to PRGM mode. Press
RUN to exit.

PROGRAMMING YOUR THERMOSTATPROGRAMMING YOUR THERMOSTAT

PROGRAMMING YOUR THERMOSTAT

PROGRAMMING YOUR THERMOSTATPROGRAMMING YOUR THERMOSTAT

This section will help you plan your thermostat's program to
meet your needs. For maximum comfort and efficiency, keep
the following guidelines in mind when planning your program.

• When heating (cooling) your building, program the temper­atures to be cooler (warmer) when the building is vacant or
during periods of low activity.

• During early morning hours, the need for cooling is usually
minimal.

Look at the factory preprogrammed times and temperatures
shown in the sample schedule. If this program will suit your
needs, simply press the RUN button to begin running the factory
preset program.

If you want to change the preprogrammed times and tempera­tures, follow these steps.

Determine the time periods and temperatures for your program.
You can program four or two periods for each day (see Configu­ration menu, item 2). 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

LO BATTLO BATT

LO BATT”. We recommend replacing batteries

LO BATTLO BATT

LOLO

LO

LOLO

LO BATTLO BATT

LO BATT” has been

LO BATTLO BATT

LO BATTLO BATT

LO BATT” condition continues, and

LO BATTLO BATT

LO BATTLO BATT

LO BATT” will flash.

LO BATTLO BATT

This feature is available the first time youThis feature is available the first time you

This feature is available the first time you

This feature is available the first time youThis feature is available the first time you

from by pressing the HOLD button. Enter the

to will be flashing. Press the HOLD button

to. Press TIME to complete

Planning Your ProgramPlanning Your Program

Planning Your Program

Planning Your ProgramPlanning Your Program

8

the weekday
also choose 7:00 AM and 76° as the weekday
coolingcooling

cooling start time and temperature).

coolingcooling

1st period heating1st period heating

1st period heating start time and temperature and

1st period heating1st period heating

1st period1st period

1st period

1st period1st period

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.

Heating/Cooling Schedule Plan (Factory Program)

Period

1ST

2ND

3RD

4TH

1ST

2ND

3RD

COOL HEAT

4TH

Heating/Cooling Schedule Plan

WEEKDAYS

(5 Day)

Period

1ST

2ND

3RD

HEAT

4TH

1ST

2ND

COOL

3RD

4TH

Set Current Time and DaySet Current Time and Day

Set Current Time and Day

Set Current Time and DaySet Current Time and Day

Start
Time Temp

Entering Your ProgramEntering Your Program

Entering Your Program

Entering Your ProgramEntering Your Program

SAMPLE

ALL DAYS OF THE WEEK

Start Time Temperature

6:00 AM

8:00 AM

5:00 PM

10:00 PM

6:00 AM

8:00 AM

5:00 PM

10:00 PM

SATURDAY

(1 Day)

Start
Time Temp

70 F

62 F

70 F

62 F

78 F

85 F

78 F

82 F

SUNDAY

(1 Day)

Start
Time Temp

1. Press TIME button once. The display will show the hour
only.

EXAMPLE:

2. Press and hold either
correct hour and AM/PM designation (

PM PM

night;

PM begins at noon).

PM PM

PM

or until you reach the

AM AM

AM begins at mid-

AM AM

3. Press TIME once again. The display window will show
the minutes only.

OPERAOPERA

OPERA

OPERAOPERA

TIONTION

TION

TIONTION

5. Press TIME once again. The display will show the day of
the week.

6. Press

or until you reach the current day of the

week.

7. Press RUN once. The display will show the correct time
and room temperature alternately.

Enter Heating ProgramEnter Heating Program

Enter Heating Program

Enter Heating ProgramEnter Heating Program

1. Move the SYSTEM switch to HEAT.

2. Press PRGM once. “MO TU WE TH FR” (indicating
weekday 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).

MO TU WE TH FR

EXAMPLE:

AM

This display window shows that for the 1st weekday
period, the start time is 6:00 AM, and 70° is the
programmed temperature (this example reflects factory
preprogramming).

3. Press or to change the displayed temperature
to your selected temperature for Monday’s 1st heating
program period.

4. Press TIME once (the programmed time will flash). Press

or until your selected start 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.

5. Press PRGM once. The currently programmed start
time and setpoint temperature for the 2nd heatingpro­gram period will appear.

6. Repeat steps 3 and 4 to select the start time and heating
temperature for the 2nd heating program period.

7. Repeat steps 3 through 5 for the 3rd and 4th heating
program periods. Weekday heating programs are now
complete.

8. Press PRGM once "SA" (indicating Saturday program)
will appear in the display, along with the start time for the
1st heating period and the currently programmed temp­erature.

9. Repeat steps 3 through 7 to complete Saturday heating
programming.

10.Press PRGM once to change to "SU" (Sunday) heating
programming and repeat steps 3 through 7 to complete
Sunday programming.

11.When you have completed entering your heating pro­gram, press RUN.

EXAMPLE:

4. Press and hold either
correct minutes.

or until you reach the

9

OPERAOPERA

OPERA

OPERAOPERA

If the outside temperature is below 50°F, disconnectIf the outside temperature is below 50°F, disconnect

If the outside temperature is below 50°F, disconnect

If the outside temperature is below 50°F, disconnectIf the outside temperature is below 50°F, disconnect
power to the cooling system before programming.power to the cooling system before programming.

power to the cooling system before programming.

power to the cooling system before programming.power to the cooling system before programming.
Energizing the air conditioner compressor duringEnergizing the air conditioner compressor during

Energizing the air conditioner compressor during

Energizing the air conditioner compressor duringEnergizing the air conditioner compressor during
cold weather may cause personal injury or propertycold weather may cause personal injury or property

cold weather may cause personal injury or property

cold weather may cause personal injury or propertycold weather may cause personal injury or property
damage.damage.

damage.

damage.damage.

1. Press SYSTEM button to COOL position.

2. Follow Enter Heating Program for entering your cooling
program, using your selected cooling times and tempera­tures.

TIONTION

TION

TIONTION

Enter Cooling ProgramEnter Cooling Program

Enter Cooling Program

Enter Cooling ProgramEnter Cooling Program

CAUTION

!

CHECK YOUR PROGRAMMING

Follow these steps to check your thermostat programming
one final time before beginning thermostat operation.

1. Press SYSTEM button to HEAT position.

2. Press PRGM to view the 1st Monday heating period
time and temperature. Each time you press PRGM, the
next heating period time and temperature will be display­ed in sequence for each weekday, then Saturday and
Sunday program periods (you may change any time or
temperature during this procedure).

3. Press RUN.

4. Press SYSTEM button to COOL position.

5. Repeat step 2 to check cooling program.

6. Press SYSTEM button to HEAT or COOL and press
RUN to begin program operation.

NOTE: Batteries are not required to keep your programming

or menu data. With two optional "AA" batteries installed,
your thermostat will maintain time and continuously
display the temperature during a loss of AC power.
Installed batteries will also allow programming prior to
installation.

YOUR THERMOSTAT IS NOW PROGRAMMED AND READY TO
PROVIDE MAXIMUM COMFORT AND EFFICIENCY!

TRTR

OUBLESHOOOUBLESHOO

TR

OUBLESHOO

TRTR

OUBLESHOOOUBLESHOO

Reset OperationReset Operation

Reset Operation

Reset OperationReset Operation

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
replace the wires and batteries. If the thermostat has been reset and still does not function correctly, contact your heating/
cooling service person or place of purchase.

SymptomSymptom

Symptom

SymptomSymptom

No Heat/No Cool/No FanNo Heat/No Cool/No Fan

No Heat/No Cool/No Fan

No Heat/No Cool/No FanNo Heat/No Cool/No Fan
(common problems)(common problems)

(common problems)

(common problems)(common problems)

No HeatNo Heat

No Heat

No HeatNo Heat

TINGTING

TING

TINGTING

RR

CC

R and

C and removing batteries for 2 minutes. After resetting the thermostat,

RR

CC

Possible CausePossible Cause

Possible Cause

Possible CausePossible Cause

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.

1. Pilot light not lit.

2. SYSTEM button not set to

3. Loose connection to thermostat or
system.

4. Furnace Lock-Out Condition. Heat
may also be intermittent.

5. Heating system requires service or
thermostat requires replacement.

HEATHEAT

HEAT.

HEATHEAT

Corrective ActionCorrective Action

Corrective Action

Corrective ActionCorrective Action

Replace fuse or reset breaker.
Turn switch to ON.
Replace door panel in proper position to engage
safety interlock or door switch.

Re-light pilot.
Press SYSTEM button to
above room temperature.
Verify thermostat and system wires are securely
attached.
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.
Diagnostic: Press SYSTEM button to
raise the setpoint above room temperature. Within a
few seconds the thermostat should make a soft click
sound. This sound usually indicates the thermostat
is operating properly. If the thermostat does not
click, try the reset operation listed above. If the
thermostat does not click after being reset contact
your heating and cooling service person or place of
purchase for a replacement. If the thermostat clicks,
contact the furnace manufacturer or a service
person to verify the heating is operating correctly.

HEATHEAT

HEAT and raise setpoint

HEATHEAT

HEATHEAT

HEAT and

HEATHEAT

10

TRTR

OUBLESHOOOUBLESHOO

TR

OUBLESHOO

TRTR

OUBLESHOOOUBLESHOO

TINGTING

TING

TINGTING

Symptom

No Cool

Heat, Cool or Fan
Runs Constantly

Furnace
(Air Conditioner)
Cycles Too Fast
or Too Slow (narrow or
wide temperature swing)

Possible Cause

1. SYSTEM button not pressed to COOL.

2. Loose connection to thermostat or
system.

3. Cooling system requires service or
thermostat requires replacement.

1. Possible short in wiring.

2. Possible short in thermostat.

3. Possible short in heat/cool/fan
system.

4. FAN Switch set to Fan On.

1. The location of the thermostat and/or
the size of the Heating System may
be influencing the cycle rate.

Corrective Action

Press SYSTEM button to COOL and lower setpoint
below room temperature.
Verify thermostat and system wires are securely
attached.
Same procedure as diagnostic for No Heat condition
except set the thermostat to COOL and lower the
setpoint below the room temperature. There may be
up to a five minute delay before the thermostat
clicks in Cooling.

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 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.

Digital thermostats normally provide precise
temperature control and may cycle faster than some
older mechanical models. A faster cycle rate means
the unit turns on and 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, choose
SL for slow cycle in the menu, step 4. If an accept­able cycle rate is not achieved as received or by
choosing slow cycle, contact a local service person
for additional suggestions.

Thermostat Setting &
Thermostat Thermometer
Disagree

Blank Display and/or
Keypad Not Responding

Heat Setpoint will
not Respond to the
Temperature Up Key

Cool Setpoint will
not Respond to the
Temperature Down Key

Forgot Keypad
Lockout Code

Why won’t my 2nd or
3rd stage come on?

1. Thermostat thermometer setting
requires adjustment.

1. Voltage spike or static discharge.

1. The desired setpoint conflicts with the
setpoint of the COOL mode.

1. The desired setpoint conflicts with the
setpoint of the HEAT mode.

First stage is keeping up with demand.

The thermometer can be adjusted +/- 4 degrees.
See Temperature Display Adjustment in the
Configuration Menu section.

Use the Reset Operation at top of previous page.

Change system mode to COOL. Raise the Cool
setpoint. Return to HEAT mode and set desired
temperature.

Change system mode to HEAT. Lower the Heat
setpoint. Return to COOL mode and set desired
temperature.

CAUTION: This resets the thermostat to factory
default settings of the configuration menu. After
performing this reset, the thermostat will require
configuration again. Be sure that you know the
required configuration settings before resetting.

With the thermostat in any mode, press
the same time to enter the configuration menu at the
point where the lockout code is to be entered. Press

and and SYSTEM button at the same time to
reset the lockout code, unlock the keypad and reset
all configuration menu settings.

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.

and at

11

FF

AA

QQ

F

A

Q

FF

AA

QQ

Symptom

Corrective Action

My thermostat is reading in Celsius.
How do I change it to Fahrenheit?

Do I have to program a stop time for each
program period?

My thermostat does not follow it’s
program. What should I do?

Between heating and cooling seasons,
I want to turn my system off. Will this
change my program?

My display light does not work. Can it be
fixed or replaced?

Do I have to reprogram my thermostat
after I change the batteries?

My setpoint temperature is flashing.
What does that mean?

Your thermostat display can be set to display temperature in Fahrenheit or
Celsius. This option can be set in the INSTALLER/CONFIGURATION MENU
of your thermostat. See page 6 step 12.

There is no need to select a time to stop a programming period. Starting a
new programming period will stop the previous program period.

Unless the thermostat appears to be damaged it will follow the program that
is in the memory. The most common reason a thermostat will appear not to
be following the program is a programming error. Verify that the AM or PM
settings are correct for each period. Also verify that the Day of the week is
set correctly. Models with EMR (Energy Management Recovery) start early to
make the temperature they are programmed for by the time specified in the
program. See the CONFIGURATION MENU on page 6 step 3.

Any time you wish to turn your system off, simply press the SYSTEM button
until “OFF” is displayed. This will not affect your thermostat’s programming
in any way. To turn the system back on, press the SYSTEM button to HEAT
or COOL and press RUN. The system will begin operating according to the
current thermostat program. See under OPERATION page 8 & 9.

Because it is soldered to the circuit board it is not possible to repair or
replace.

No. This thermostat has permanent memory, although you will have to reset
your clock.

When the thermostat compressor time delay occurs it will flash the setpoint
for about five minutes. This is intended to help protect the compressor from
short cycling.

How can I get a copy of the Operating
Manual for my thermostat?

My program or configuration menu is all
messed up, how do I start from the
beginning?

HOMEOWNER HELP LINE: 1-800-284-2925

Visit our website at www.white-rodgers.com for operating manuals.

You can perform software reset by pressing and SYSTEM buttons
simultaneously when SYSTEM mode is OFF. See “Forget Keypad Lockout
Code” under “TROUBLESHOOTING” for details.

The Emerson logo is a
trademark and service mark
of Emerson Electric Co.

www.white-rodgers.com